Class / Patent application number | Description | Number of patent applications / Date published |
324234000 | Electrically energized nonforce type sensor | 86 |
20080211492 | Magnetic Impedance Measurement Device - The distribution of the impedance characteristic of a test object is detected by applying an alternate magnetic field of a low frequency to the test object and measuring the induced current generated therefrom. | 09-04-2008 |
20080238418 | Method for Handling a Cast Iron Component Based on Estimating Hardness By Magnetic Barkhausen Noise - A method for handling a cast iron component adapted for use in a vehicle or engine, the method comprising measuring at least one magnetic Barkhausen noise parameter on at least one surface of the cast iron component, estimating the hardness of the material in the cast iron component based on the at least one magnetic Barkhausen noise parameter, and determining whether the estimated hardness lies within an allowed hardness interval. | 10-02-2008 |
20080246470 | Magnetic Sensor Device With Field Compensation - The invention relates to a magnetic sensor device ( | 10-09-2008 |
20080246471 | Magnetic Sensor Device With Different Internal Operating Frequencies - The invention relates to a magnetic sensor device ( | 10-09-2008 |
20080252288 | Magnetic Sensor Device with Filtering Means - The invention relates to a magnetic sensor device ( | 10-16-2008 |
20080278155 | System and Use Concerning Under Water Eddy Current Measurements on Components for Nuclear Reactors - The invention concerns a system suited for carrying out eddy current measurements on components for nuclear reactors when these components are located in water. The system comprises a control unit, a measurement probe and a first cable suited to constitute at least a part of the connection between the control unit and the measurement probe. The system also comprises a switching unit, suited to be located in water and arranged to be connected with said first cable, and to be connected with the measurement probe. The switching unit has a switching device which can assume at least a first and a second state. In the first state, the first cable is connected with the measurement probe. In the second state, the first cable is not connected with the measurement probe. The invention also concerns the use of the system. | 11-13-2008 |
20080278156 | Sensor Device With Generator and Sensor Current Sources - The invention relates to a magnetic sensor device ( | 11-13-2008 |
20080303517 | Sensor For Locating Metallic Objects and Method For Evaluating Measurement Signal of Such a Sensor - A rubber composition which comprises: (A) a rubber ingredient comprising 30-100 mass % diene rubber having at least one functional group selected from the group consisting of amino, alkoxysilyl, epoxy, hydroxy, and carboxy in an amount of 0.01-5.0 mmol per 100 g; (B) silica, which is contained in an amount of 5-130 parts by mass per 100 parts by mass of the rubber ingredient; and (C) an aliphatic ingredient having at least one functional group selected from the group consisting of carboxy, hydroxy, amino, and epoxy, the aliphatic ingredient being contained in an amount of 3-15 parts by mass per 100 parts by mass of the silica. This rubber composition and an unvulcanized tire formed therefrom have excellent insusceptibility to scorching, and are reduced in rolling resistance and excellent in wet skid resistance after vulcanization. | 12-11-2008 |
20090001978 | Sensor system - A sensor system is provided. The sensor system includes an electrically conductive surface and an air coil in proximity to the electrically conductive surface. The air coil has a wire winding pattern with an “L” shaped cross section. The sensor system also includes a controller, coupled to the air coil and configured to sense a change in impedance of the air coil due to movement of the electrically conductive surface. A safety device is coupled to the controller. The controller activates the safety device if the change in impedance of the air coil exceeds a predetermined threshold. | 01-01-2009 |
20090072821 | CONTROL GATE - A control gate includes an exciting coil and a detecting coil. The exciting coil forms an alternating magnetic field in a passageway at an entrance to or an exit from an area where taking out or bringing in of an object is controlled. The detecting coil detects a change of the magnetic field when magnetic substance contained in the object generating a large Barkhausen effect causes magnetic inversion in the alternating magnetic field. The exciting coil is provided above the passageway and has a winding wire wound along a horizontal plane. The detecting coil is provided in a side part of the passageway and has a winding wire wound along a vertical plane which is parallel to a passing direction of the passageway. | 03-19-2009 |
20090146655 | Eddy current inspection device and method of assembly - A method for assembling an eddy current inspection device includes at least partially positioning a first tip assembly within a cavity defined by a proximity probe case. The first tip assembly defines a bore therethrough. The first tip assembly is sealingly coupling to the proximity probe case. A second tip assembly is at least partially positioned within the cavity and sealingly coupled to the first tip assembly. | 06-11-2009 |
20090289625 | Sensor system - A sensor system includes an electrically conductive surface and an air coil in proximity to the electrically conductive surface. The air coil includes a first coil and a second coil. The first coil forms a wire winding pattern having a cross section perpendicular with the cross section of a wire winding pattern of the second coil. The sensor system also includes a controller electrically coupled to the air coil and configured to sense a change in impedance of the air coil due to relative movement between the air coil and the electrically conductive surface. The sensor system also includes a safety device electrically coupled to the controller. | 11-26-2009 |
20120019236 | EDDY CURRENT DETECTION - Eddy current detection probes and related methods are disclosed. In some embodiments, the eddy current detection probes are hybrid probes, including a solid state sensor and a detection loop. In some embodiments, the eddy current detection probes include a drive coil and a detection loop, with the detection loop having a sensitive axis that is not parallel to principal axis of the drive coil. In some such embodiments, the sensitive axis of the detection loop is perpendicular to the principal axis of the drive coil. | 01-26-2012 |
20120068696 | APPARATUS FOR EVALUATING HARDENING QUALITY AND METHOD THEREOF - A hardening quality evaluating apparatus and a hardening quality evaluating method, both of which are effective to accurately evaluate, on a non-destructive basis, the hardening quality of an object to be inspected, is provided. The apparatus includes an electric power supply electrode held in contact with an object to be inspected, an electric power source for applying an alternating current to the object through the electric power supply electrode, a magnetic field sensor for measuring a magnetic field developed by an electric current flowing through the object, and a quality determining unit for measuring the hardening quality of the object through the magnetic field measured by the magnetic field sensor. | 03-22-2012 |
20120126799 | MAGNETIC FIELD SENSOR AND METHOD FOR PRODUCING A MAGNETIC FIELD SENSOR - A magnetometer is described, having a substrate and a magnetic core, the substrate having an excitation coil for generating a magnetic flux in the magnetic core; and the excitation coil having a coil cross section, which is aligned generally perpendicular to a main plane of extension of the substrate. The magnetic core is situated outside the coil cross section. | 05-24-2012 |
20120126800 | APPARATUS AND METHOD FOR DETERMINING AT LEAST ONE ELECTROMAGNETIC QUANTITY - The present invention relates to an apparatus ( | 05-24-2012 |
20130015849 | DEVICE FOR DETERMINING THE WEAR OF A CARBON CERAMIC BRAKE DISKAANM BRANDESTINI; MarcoAACI LachenAACO CHAAGP BRANDESTINI; Marco Lachen CHAANM STIERLI; PeterAACI UerikonAACO CHAAGP STIERLI; Peter Uerikon CH - Device for determining wear in a carbon ceramic brake disk. The device includes a coil arrangement having at least one coil structured and arranged to generate a magnetic field in the brake disk and to detect an eddy current in the brake disk, and an arcuate measuring area. | 01-17-2013 |
20130057267 | CURRENT SENSOR - A current sensor includes a printed circuit and current lines. The printed circuit comprises a stack, along a vertical direction, of metallization layers mechanically separated by electrically insulating layers, and a measurement or excitation coil wound around a vertical winding axis. The coil is formed by conductive tracks made in at least one metallization layer. One or more current lines are positioned in a plane parallel to the layers and are configured to be supplied with currents to be measured. The coil comprises turns formed by conductive tracks, made in respective metallization layers, electrically connected to one another by pads passing through at least one of the electrically insulating layers, to form a coil that extends along the vertical winding axis. | 03-07-2013 |
20130307531 | Search Coil Assembly and System for Metal Detection - A search coil assembly comprises a transmit coil operable for radiating a magnetic field in response to a time varying current. The transmit coil comprises a conductive path being disposed at least within a transmit plane for radiating the magnetic field. At least one receive coil is operable for inducting a current in response to a time varying magnetic field. The receive coil comprises a conductive path being disposed within a receive plane for inducting the current. The receive coil is positionable to place the receive plane and the transmit plane in a substantially orthogonal orientation with the receive plane being substantially within null regions of the transmit coil's magnetic field, in which a metallic object, at a distance from the search coil assembly, reacts to a radiated magnetic field from the transmit coil, and the receive coil inducts a current in response to the reaction. | 11-21-2013 |
20140028301 | Measuring Apparatus, Particularly Measuring Apparatus for Sensing Metal Articles - A measuring apparatus for sensing metal articles, comprises a transmission coil for producing a magnetic field, two reception coils, which are oriented relative to one another, and electrically connected to one another, in the region of the magnetic field such that a resulting received voltage on the reception coils is zero when the magnetic field acts on both reception coils in the same way, a control device configured to supply the transmission coil with an alternating transmission voltage, and a determination device configured to determine the metal article on the basis of the received voltage. In this arrangement, the control device is further configured to control RMS value for the transmission voltage such that the received voltage remains below a predetermined threshold value. | 01-30-2014 |
20140292319 | DEVICES, METHODS, AND SYSTEMS FOR SENSING CURRENT - Devices, methods, and systems for sensing current are described herein. One device includes a first electrode, a second electrode, and a tunneling magnetoresistance material between the first and second electrodes. | 10-02-2014 |
20140306698 | APPARATUS AND METHOD FOR INFLUENCING AND/OR DETECTING MAGNETIC PARTICLES HAVING A LARGE FIELD OF VIEW - The present invention relates to an apparatus and a method for influencing and/or detecting magnetic particles in a field of view ( | 10-16-2014 |
20150008911 | APPARATUS FOR SENSING CURRENT FROM ELECTRICAL APPLIANCES - Disclosed is an apparatus for sensing current flowing the electric cord of an electric appliance. The electric cord includes at least two current carrying wires. The apparatus includes a current sensing unit, a computing unit, a power source and a housing. The current sensing unit is arranged proximate to the electric cord, the current sensing unit includes a three or more axis sensor operative to detect the changes in magnitude and orientation of magnetic field caused by the current flowing through the current carrying wires of the electric cord for generating an electrical signal. The computing unit is programmed to compute the value of current flowing from the generated electrical signal. The power source is operative to power the current sensing unit. The housing is operative to house the current sensing unit and the power source. | 01-08-2015 |
20150108970 | EDDY CURRENT TESTING PROBE AND EDDY CURRENT TESTING METHOD - An eddy current testing probe includes: exciter coils | 04-23-2015 |
20150331135 | SYSTEMS, METHODS, AND APPARATUS FOR FOREIGN OBJECT DETECTION LOOP BASED ON INDUCTIVE THERMAL SENSING - This disclosure provides systems, methods and apparatus for detecting foreign objects. An apparatus for detecting a presence of an object is provided. The apparatus includes a coil configured to inductively sense a presence of an object based on an electrical characteristic of the coil that varies as a function of a temperature of the object when the object is exposed to an alternating magnetic field. The apparatus further includes a controller configured to detect a change in the electrical characteristic. | 11-19-2015 |
20160033667 | METAL DETECTOR APPARATUS, SYSTEM, AND METHOD - Provided is an apparatus, system, and method for detecting a metal contaminant in a sensor-enabled dose form. According to the method, a sensor-enabled dose form is oriented in a predetermined orientation. The sensor-enabled dose form is received through an aperture of a metal detector. A detection signal is generated by the metal detector in response to receiving the sensor-enabled dose form through the aperture of the metal detector. The detection signal is compared to a predetermined threshold. The presence of a metal contaminant in the sensor-enabled dose form is determined based on the comparison of the detection signal and the predetermined threshold. In another method, the sensor-enabled dose form is first oriented in a first orientation and then in a second orientation. The apparatus includes a guide, a metal detector, and a comparator circuit. The system further includes a controller to reject contaminated sensor-enabled dose forms. | 02-04-2016 |
20160124057 | MAGNETIC DETECTOR - A probe for detecting magnetic particles. In one embodiment, the probe includes: a cylindrical probe core having a first end and a second end, the cylindrical probe core defining two channels for containing coils of wire, one of the channels being adjacent the first end of the cylindrical probe core; two sense coils, one each of the sense coils being located in a respective one of the channels; and two drive coils, one each of the drive coils being co-located with the respective sense coil in a respective one of the channels. | 05-05-2016 |
20160163141 | COIN-SHAPED DETECTION OBJECT DISCRIMINATING DEVICE - A coin-shaped detection object discriminating device may be used with a detection object in a coin shape, and the coin-shaped detection object discriminating device may include a passage through which the detection object is passed; a permanent magnet; and a magnetic sensor disposed opposite to the permanent magnet across the passage. | 06-09-2016 |
324235000 | Noncoil type | 4 |
20090027047 | CURRENT SENSOR HAVING SANDWICHED MAGNETIC PERMEABILITY LAYER - A current sensor includes a support structure ( | 01-29-2009 |
20090167298 | SYSTEM AND METHOD FOR THE NONDESTRUCTIVE TESTING OF ELONGATE BODIES AND THEIR WELDBOND JOINTS - An arrangement for testing an elongated body | 07-02-2009 |
20120098531 | DEVICE FOR THE NONDESTRUCTIVE TEST OF A PART - A device for testing to detect defects at a surface or at shallow depth in a part, for example a blade root for an airplane engine fan. The device includes a probe including a sensor, the probe being hinge-mounted to the end of a handle, a guide presenting a reference surface, and a mechanism adjusting the position of the guide parallel to an axis of the handle. | 04-26-2012 |
20120200288 | Apparatus for Measuring Hall Effect - The present invention relates to a hall-effect measuring apparatus for measuring characteristic values of a semiconductor using hall-effect. In an embodiment of the present invention, the hall-effect measuring apparatus for measuring characteristic values of a semiconductor sample using hall-effect comprises a magnetic flux density applying device for accommodating a sample holder where the sample is set therein and moving permanent magnets by an electric motor installed at one side thereof to form a certain magnetic field at the sample; and a sample temperature control means for setting temperature of the sample by controlling temperature of the sample holder, in which current is applied to the sample, and hall voltage outputted from the sample is measured. | 08-09-2012 |
324236000 | Oscillator type | 6 |
20080197839 | INDUCTIVE PROXIMITY SENSOR - The invention relates to an inductive proximity sensor with a sensor element which includes a resonant circuit which provides an output signal which depends on the damping by an electrically conductive object. In accordance with the invention, the inductive proximity sensor has a ΣΔ modulator for the evaluation of an output signal of the resonant circuit. The invention furthermore relates to a method for the determination of the presence and/or of the spacing of a metallic object with the help of an inductive proximity sensor. | 08-21-2008 |
20090021252 | METAL DETECTOR - A vibration canceling circuit for a metal detector. The metal detector includes a transmit coil, first and second receive coils, a differential circuit coupled to the first and second receive coils, a controller coupled to the differential circuit, and a vibration canceling circuit coupled to the controller. The controller uses a signal provided by the vibration canceling circuit to remove a vibration component from a metal detection signal. | 01-22-2009 |
20090251138 | METAL DETECTOR - An exemplary metal detector includes a detecting circuit, a SCM, a converting circuit, and a cymometer. The SCM cooperates with the detecting circuit to generate a current signal with a specific frequency, the converting circuit transforms the current signal received from the SCM to a voltage signal, and the cymometer displays a value of a frequency of the current signal according to the voltage signal. When the detecting circuit detects a metal nearby, the value of the frequency of the current signal displayed on the cymometer changes. | 10-08-2009 |
20100295544 | Vibration and condition monitoring system and the parts thereof - A vibration and condition monitoring system, with true digital signal processing based design, with very limited analog based general signal conditioning and integrated specific sensor conditioning in each module. In addition to the support for common eddy current probe systems, employing an external driver, the module also supports direct connection of an eddy current probe system to the module, due to a built-in driver and linearization functionality. Specific sensor signal conditioning is not dependent on hardware, but only on embedded software, firmware. There is full sensor input support in an I. S. environment. Not only the common sensor input types from accelerometer, velocity sensor, but also direct input for eddy current probe systems for both vibration and/or speed measurements. The module also comprises means to assess the type and correct functionality of an attached eddy current probe system ( | 11-25-2010 |
20140091787 | METHOD FOR DETECTING METAL FOREIGN OBJECT ON CONTACTLESS POWER SUPPLY DEVICE, CONTACTLESS POWER SUPPLY DEVICE, CONTACTLESS POWER RECEPTION DEVICE, AND CONTACTLESS POWER SUPPLY SYSTEM - With a metal foreign object detecting method, a metal detection circuit arranged in a contactless power supply device transmits an oscillation signal to a modulation circuit of an electric appliance. The modulation circuit generates a square wave pulse signal from the oscillation signal. The cycle of the oscillation signal received by the modulation circuit changes in accordance with whether or not a metal piece is present. The modulation circuit modulates the square wave pulse signal to generate a modulated wave signal and transmits the modulated wave signal to the metal detection circuit of the power supply device. The metal detection circuit demodulates the modulated wave signal and determines whether or not a metal piece is present based on the cycle of the demodulated signal corresponding to the square wave pulse signal. | 04-03-2014 |
20160084924 | Magnetic Permeability Sensor and Magnetic Permeability Detecting Method, Dielectric Permittivity Sensor and Dielectric Permittivity Detecting Method, and Magnetic Permeability and Dielectric Permittivity Sensor and Magnetic Permeability and Dielectric Permittivity Detecting Method - Each of the oscillation frequency of a first oscillation circuit performing oscillation in a state of including a coil and a capacitor and the oscillation frequency of a second oscillation circuit performing oscillation in a state of including a coil and a capacitor different from the coil and the capacitor of the first oscillation circuit is measured. Then, the difference of the measured oscillation frequencies is calculated and then the calculated difference is converted into a magnetic permeability or a dielectric permittivity. One sensor selectively detects a change in the magnetic permeability or a change in the dielectric permittivity of a subject material. | 03-24-2016 |
324238000 | Material flaw testing | 48 |
20080211493 | Rivet Rotating Probe - An eddy current probe adapted for detecting cracks in material directly beneath a raised-head fastener is disclosed. The probe comprises an eddy current coil and a support means for carrying the coil in an orientation suitable for introducing eddy currents into material directly beneath a raised-head fastener. | 09-04-2008 |
20080265878 | METHOD AND AN INSTALLATION FOR USING EDDY CURRENTS FOR NON-DESTRUCTIVE INSPECTION WITH AUTOMATIC CALIBRATION - Using eddy currents for automatic inspection of a rectilinear hole formed in a metal part. An eddy-current probe is carried by a drive system associated with a positioning baseplate that carries a calibration part including a hole similar to the hole for inspection and in alignment with an orifice thereof. | 10-30-2008 |
20080278157 | Eddy current probe - An eddy current probe moves along a longitudinal axis and includes a support structure defining a surface, the surface including a set of panels. Conductor coils are distributed across said surface, each panel includes at least one coil section, each coil section lies transverse to the longitudinal axis. | 11-13-2008 |
20090009162 | EDDY CURRENT FLAW DETECTION PROBE - Disclosed is an eddy current flaw detection probe that is capable of pressing itself against an inspection target whose curvature varies. A flaw sensor is configured by fastening a plurality of coils to a flexible substrate that faces the surface of the inspection target. A first elastic body is positioned opposite the inspection target for the flaw sensor, is obtained by stacking two or more elastic plates, and has an elastic coefficient that varies in a longitudinal direction. A second elastic body is a porous body positioned between the flexible substrate and the first elastic body. A pressure section is employed to press the first elastic body toward the inspection target. | 01-08-2009 |
20090021253 | METHOD AND DEVICE FOR LONG-RANGE GUIDED-WAVE INSPECTION OF FIRE SIDE OF WATERWALL TUBES IN BOILERS - Methods and devices for inspecting waterwall tubes for the detection of fire side damage over a long length of the tube are described. The system of the invention uses a magnetostrictive strip and a flat coil-type plate magnetostrictive sensor (MsS) that are held in place on the waterwall using a specially designed frame and an electromagnetic circuit. The magnetostrictive strip and plate type MsS are positioned against a tube in the waterwall using an elastomeric pad or a fluid filled bladder to achieve close contact and good mechanical coupling between the magnetostrictive strip and the tube surface. When current activated, the electromagnet holds the entire assembly in place and provides a DC bias magnetic field required for plate magnetostrictive sensor probe operation. Long-range guided-waves are pulsed into the tube and reflected signals are detected within the same sensor structure. The received signal data representative of a long section of the tube under investigation is then analyzed for the presence of anomalies and defects. When data acquisition for a particular tube or tube section is completed the electromagnet is turned off and the entire device is moved to the next tube in the waterwall. | 01-22-2009 |
20090051358 | Flaw Detector and Flaw Detection Method For Silicon Layer of Wafer - The present invention is achieved for the purpose of easily detecting a crack or flaw existing in the silicon layer of a wafer in a short period of time. The flaw detector thus provided includes a coil sensor placed at a predetermined distance from the surface of the silicon layer; a radiofrequency applier for applying a radiofrequency to the coil sensor; a scanner for relatively moving the silicon layer and the coil sensor with a constant distance between the surface of the silicon layer and the coil sensor; and a crack detector for detecting a crack or flaw existing in the silicon layer by detecting the change of a signal provided from the coil sensor or the change in the radiofrequency applied by the radiofrequency applier. The frequency of the radiofrequency applied by the radiofrequency applier may be set between 5 MHz and 200 MHz. This enables a flaw detection for a silicon layer which has been considered to be impossible. In the case where the silicon to be flaw-detected is low resistivity silicon, the frequency applied may be set between 0.5 MHz and 200 MHz. | 02-26-2009 |
20090072822 | SYSTEM AND METHOD FOR INSPECTION OF PARTS - An inspection system for detecting a flaw in a part is provided. The inspection system includes a generally C-shaped core having an opening for receiving the part. The system also includes a driver coil wrapped around the core for creating a magnetic field in the opening. The system further includes at least one single element or multiple element eddy current sensor disposed in the opening. | 03-19-2009 |
20090174399 | Method and System for Generating and Receiving Torsional Guided Waves in a Structure Using Wiedemann and Inverse Wiedmann Effect - A method is shown for magnetostrictive testing of structures using magnetostrictive techniques. A torsional guided wave is generated in the structure either directly, or through a magnetostrictive strip dry coupled or bonded to the structure. A permanent magnetic field is created by either permanent magnets or DC current for a permanent bias in a bias direction in the magnetostrictive strip and/or structure. By pulsing the magnetic field with an AC current pulse, a torsional guided wave will flow through the structure in the same direction as the permanent bias. By saturating the permanent magnetic field, a maximum torsional guided wave is reflected from defects in the structure to given an improved signal to noise ratio. | 07-09-2009 |
20090273342 | ENHANCED WIRELESS EDDY CURRENT PROBE FOR A NON-DESTRUCTIVE INSPECTION SYSTEM - An enhanced wireless eddy current probe is disclosed which has means to wirelessly couple to a non-destructive inspection (NDI) system situated some distance away from an inspection point on a material under inspection. The disclosed enhanced wireless eddy current probe provides means for executing advanced functions necessary for a complex eddy current inspection operation. These functions include, but are not limited to, storing, loading, and executing a predetermined firing sequence on an array of coil elements, probe balancing, probe calibration, and providing bibliographic information specific to said probe to a wirelessly coupled NDI system. | 11-05-2009 |
20090309589 | DEVICE FOR THE IN-LINE DETECTION OF SURFACE DEFECTS IN A ROLLED PRODUCT IN A ROLLING STAND AND RELATIVE METHOD | 12-17-2009 |
20100085042 | EDDY CURRENT TESTING APPARATUS AND EDDY CURRENT TESTING METHOD - The eddy current testing apparatus includes a probe having an eddy current testing sensor including a pair of eddy current testing coils. The apparatus also includes an eddy current testing flaw detector inputting detection signals from the eddy current testing sensor. The diameter of a magnetic core used in each of the pair of eddy current testing coils is within the range of 0.1 mm to 0.5 mm. | 04-08-2010 |
20100085043 | EDDY CURRENT TESTING APPARATUS AND EDDY CURRENT TESTING METHOD - The eddy current testing apparatus includes a probe having an eddy current testing sensor including a pair of eddy current testing coils. The apparatus also includes an eddy current testing flaw detector inputting detection signals from the eddy current testing sensor. The diameter of a magnetic core used in each of the pair of eddy current testing coils is within the range of 0.1 mm to 0.5 mm. | 04-08-2010 |
20100097057 | INSPECTION APPARATUS FOR PERFORMING INSPECTIONS - An inspection apparatus is provided that can include at least one probe receiving unit. The at least one probe receiving unit can be capable of processing data corresponding to one or more of image information of the type that can be generated by a visual inspection probe, eddy current information of the type that can be generated by a eddy current probe, and ultrasound information of the type that can be generated by a ultrasound probe. | 04-22-2010 |
20100127699 | SYSTEM AND METHOD FOR INSPECTION OF PARTS WITH COMPLEX GEOMETRIES - An inspection system for inspecting a part is provided. The inspection system includes a multi-dimensional array of eddy current sensors that conforms to a contour of a three dimensional shape of the part. The inspection system also includes a controller coupled to the multi-dimensional array, wherein the controller is configured to electronically scan the part via an electrical connection of the eddy current sensors to an eddy current instrument. The inspection system further includes a processor coupled to the eddy current instrument, wherein the processor is configured to analyze output from the eddy current instrument and the controller to accomplish inspection of the part. | 05-27-2010 |
20100134098 | COMPOSITE SYSTEMS, ARTICLES INCORPORATING THE SYSTEM, METHODS FOR IN-SITU, NON-DESTRUCTIVE TESTING OF THESE AND ARRAY PROBES USEFUL FOR THE METHODS - The invention provides composite systems, articles comprising the composite system, methods for the in-situ, non-destructive testing of the articles and/or composite systems, as well as array probes useful in the methods. The composite systems comprise a curable resin and at least one plurality of detectable particles. | 06-03-2010 |
20100148766 | MAGNETIC INSPECTION DEVICE - A magnetic inspection device for nondestructively inspecting elongated objects, such as wire cables, pipes, and the like, for loss of metallic cross-section due to abrasion, corrosion, and external and internal discontinuities, having a magnet for inducing in sections of the object between the stations, magnetic flux at the saturation level. A magnetic flux detector having magnetic sensors positioned between the poles and laterally of the elongated object utilizes shields and flux decompressors to render the flux detector more sensitive to leakage flux caused by discontinuities in the objects. | 06-17-2010 |
20100148767 | Eddy Current Testing Method and Eddy Current Testing Apparatus - It is an object of the present invention to provide an eddy current testing apparatus capable of accurately detecting any flaws occurring in a columnar or cylindrical subject to be tested regardless of their extending directions, with the use of the same probe coil. | 06-17-2010 |
20100207619 | METHOD AND SYSTEM FOR INTEGRATING EDDY CURRENT INSPECTION WITH A COORDINATE MEASURING DEVICE - A method for integrating a measurement device for use in measuring a machine component includes providing a coordinate measuring machine (CMM) and combining eddy current (EC) capabilities and CMM capabilities to form an inspection probe. The method further includes installing the inspection probe on the CMM so that the inspection probe measures external boundaries of the machine component with the CMM capabilities and substantially simultaneously measures at least one of internal boundaries, internal defects, surface defects, and material properties of the machine component with the EC capabilities, which are directly linked to actual component dimensional information provided by CMM. The inspection data can be simultaneously linked to and/or displayed with a CAD model to enable a direct comparison between the inspection data and the nominal requirements specified on the CAD model. | 08-19-2010 |
20100219818 | DEVICE FOR NONDESTRUCTIVE TESTING OF PIPES - A device for nondestructive testing of a pipe made of ferromagnetic steel for detection of longitudinal, transverse or inclined flaws using magnetic or magnetic-induction test procedures is disclosed. The device includes a magnetizing yoke which transmits the magnetic flux contactless into the pipe and at least two magnetic-field-sensitive scanning probes having GMR sensors. The GMR sensors are combined into sensor groups in form of a sensor array and electrically connected in parallel. A single preamplifier connected to each sensor group in one-to-one correspondence. The device further includes an evaluation unit. | 09-02-2010 |
20110062953 | NONDESTRUCTIVE TESTING SYSTEM FOR STEEL WORKPIECE - A nondestructive testing system for testing the strength of a gear ( | 03-17-2011 |
20110234213 | TEST METHOD AND TEST APPARATUS FOR TESTING ELONGATED OBJECTS USING COIL - A test method for testing elongated objects comprising moving an elongated object in a feed-through direction through a feed-through coil arrangement having at least one feed-through coil, wherein the feed-through coil arrangement is secured to be transversely movable with respect to the feed-through direction of the object and is guided on the object passing through such that the feed-through coil arrangement can follow transverse movements of the object occurring transversely with respect to the feed-through direction of the object. | 09-29-2011 |
20110267047 | NONDESTRUCTIVE ROBOTIC INSPECTION METHOD AND SYSTEM THEREFOR - A method and system for inspecting components, such as a rotating component of a turbomachines having one or more slots along a perimeter thereof. The method entails mounting to a robotic apparatus a probe assembly that includes a holder assembly to which a probe tip is mounted, an eddy current coil within the probe tip and adjacent a first face thereof, a touch probe contact located at a second face of the probe tip, an element for enabling relative movement between the probe tip and holder assembly, and an element for biasing the probe tip relative to the holder assembly in a direction parallel to the movement. The probe tip is then placed in a slot and caused to travel along the surface of the slot to electromagnetically inspect the slot for cracks in its surface while the first face of the probe tip is maintained in contact with a slot surface. | 11-03-2011 |
20120068697 | APPARATUS AND METHOD FOR DETECTING DEFECT USING MULTIPLE PHASE SELECTABLE PULSED EDDY CURRENT - There is provided a apparatus and method for detecting defect using multiple phase selectable pulsed eddy current (PEC), comprising: an object to be determined as to presence of a defect; a PEC irradiation unit positioned close to a surface of the object, that irradiates a PEC signal to the object and receives a defect or defect-free signal reflected from the object as a result of irradiation; a measurement unit connected to the PEC irradiation unit by a cable, being input with the reflected PEC signal received in the PEC irradiation unit, and stored with a program for time-sharing and displaying the PEC signal on a graph, that processes a resultant value to be displayed; a display unit connected to the measurement unit, that displays the resultant value being output from the measurement unit; and an input unit connected to the measurement unit, that sets a phase (a multiple phase selectable value through selecting an arbitrary location by time-sharing the measured PEC signal), frequency (a frequency value of the input PEC signal) and gain (a time axis range of the reflected PEC signal) of the PEC signal irradiated to the object. | 03-22-2012 |
20120126801 | DEVICE FOR DETECTION OF AT LEAST ONE DEFECT IN A CONCAVE OR CONVEX STRUCTURE - The invention relates to a device for the detection of at least one defect in a concave or convex structure comprising an emitting part and a receiving part, in which the emitting part comprises at least one current layer ( | 05-24-2012 |
20120153941 | NONDESTRUCTIVE TEST OF A SEALING MEMBER - A device for inspecting an annular sealing wiper extending at the surface of a bladed-wheel drum of a rotor. The device includes a carriage including at least two guide wheels and carrying a probe situated in a location such that, when the carriage is in position, the probe is positioned facing an edge of the wiper for inspection and at a determined distance therefrom. | 06-21-2012 |
20120200289 | MEASURING DEVICE FOR DETERMINING AN OPERATING STATE VARIABLE OF A ROTATING STRUCTURAL ELEMENT, IN PARTICULAR A BEARING - A measuring device for determining an operating state variable of a rotating structural element, in particular a bearing, which has a plurality of components. Specifically, the measuring device has a permanent magnet, an encoder ring for manipulating the magnetic field which is generated by the permanent magnet, a magnetic field sensor, a radio unit for transmitting measurement signals from the magnetic field sensor to an evaluation unit, and an energy converter unit for converting rotation energy into electrical energy. The encoder ring is produced from a ferromagnetic and non-premagnetized material. | 08-09-2012 |
20120306482 | Aircraft Fuselage Inspection System - A method and apparatus for inspecting a metallic structure. A first signal is sent into a first location in the metallic structure and a second signal into a second location in the metallic structure at substantially a same time. A first response to the first signal is received. A second response to the second signal is received. The first response is compared with the second response to form a comparison. A determination is made as to whether an inconsistency is present using the comparison. | 12-06-2012 |
20130147471 | MAGNETIC INSPECTION DEVICE AND METHOD - A magnetic inspection device and method for nondestructive testing of wire ropes and the like utilizes a leakage flux generator moveable relative to a wire rope to be inspected for inducing in sections of the wire rope magnetic flux at a saturation level. A leakage flux detector moves with the leakage flux generator, and cooperates with the leakage flux generator for detecting leakage flux at the outer surface of the wire rope saturated by the generator. The detector provides a high fidelity signal representative of the loss of metallic cross section at individual locations along the wire rope. A signal processor receiving the high fidelity signal representative of the loss of metallic cross section from the detector extracts a wire rope roughness component from the high fidelity signal. | 06-13-2013 |
20130187643 | TESTING DEVICE AND TESTING METHOD FOR NON DESTRUCTIVE DETECTION OF A DEFECT IN A TEST PIECE BY MEANS OF AN EDDY CURRENT - A test set-up ( | 07-25-2013 |
20130249540 | EDDY CURRENT ARRAY PROBE AND METHOD FOR LIFT-OFF COMPENSATION DURING OPERATION WITHOUT KNOWN LIFT REFERENCES - The invention provides a method for compensating the sensitivity variations induced by lift-off variations for an eddy current array probe. The invention uses the eddy current array probe coils in two separate ways to produce a first set of detection channels and a second set of lift-off measurement channels without the need to add coils dedicated to the lift-off measurement operation. Another aspect of the invention provides an improved calibration process which combines the detection and lift-off measurement channel calibration on a simple calibration block including a reference defect without the need of a pre-defined lift-off condition. | 09-26-2013 |
20140167748 | TUBING PROBE BOBBIN WITH PETAL - An apparatus and method for inspecting an elongate tubular member with an eddy current sensor inspection assembly including a bobbin is provided. The bobbin includes a shell defining a hollow interior and axially aligned openings at each end while supporting a sensor. A plurality of petals extend outwardly from the shell, and the petals are configured to position the bobbin concentrically within a tubular member as the bobbin is moved within the tubular member. The bobbin can be included in an inspection assembly with a probe head to support a sensor including at least one wire winding. A flexible shaft is connected to the probe head and transmits a motive force to move the probe head within the tubular member. The probe head includes a flexible tube, the bobbin supporting the sensor, and at least one centering bead mounted upon the flexible tube. | 06-19-2014 |
20140347041 | DEFECT INSPECTION DEVICE OF STEEL PLATE - Provided is a defect inspection device of a steel plate. The defect inspection device according to the present invention includes a plurality of inspection units arranged in a width direction of the steel plate, wherein each of the plurality of inspection units includes a first magnetized pole and a second magnetized pole corresponding to each other. Also, the inspection unit includes: a magnetizing part generating a magnetic flux for magnetizing the steel plate in a direction inclined at a predetermined angle with respect to a rolling direction through the first magnetized pole and the second magnetized pole; and a detection part detecting a leakage flux that leaks due to defects existing in or on the steel plate by using the flux generated by the magnetizing part. Thus, the defects may be correctly detected through the defect inspection device. | 11-27-2014 |
20150008912 | METHOD AND DEVICE FOR DETECTING MECHANICAL CHANGES IN A COMPONENT BY MEANS OF A MAGNETOELASTIC SENSOR - A method and a device detect mechanical changes in a component formed of a ferromagnetic material. The mechanical stress in the component is determined using at least one magnetoelastic sensor. | 01-08-2015 |
20150054501 | METHOD FOR INSPECTING A COMPONENT ON THE BASIS OF BARKHAUSEN NOISES - A method of inspecting a component ( | 02-26-2015 |
20150061659 | FAULT DETECTION FOR PIPELINES - The invention concerns a structural integrity assessment system and method for determining stress concentration zones in a structure, such as a pipeline. The invention comprises a magnetic field sensor array arranged to be moved relative to the structure in a known direction. A controller is provided for recording one or more magnetic field readings taken by the magnetic field sensor array at different locations in the direction of movement thereof. A processor is arranged to identify one or more feature within said values, said feature being indicative of a region of reduced structural integrity in the structure. The processor also receives a data input for a further parameter corresponding to the location of the sensor array and compares the feature with the further parameter in order to verify that said feature corresponds to a region of reduced structural integrity for the structure. | 03-05-2015 |
20150346155 | DEVICE FOR THE NONDESTRUCTIVE TEST OF A PART - Eddy current testing to detect defects at the surface or at shallow depth in a part, in particular a blade root for an airplane engine fan. The device comprises a probe ( | 12-03-2015 |
20150362422 | DATA ACQUISITION SYSTEM WITH ROTATING PROBE MEMBERS AND GROUND REFERENCE ELECTRODE - In one general aspect, an apparatus can include a probe including a plurality of exterior rotating members defining a guard ring, and an interior rotating member having a circular shape and disposed within at least a portion of a perimeter defined by the plurality of exterior rotating members. The apparatus can also include a waveform generator electrically coupled to the guard ring and the interior rotating member. | 12-17-2015 |
20160003776 | METHOD FOR DETERMINING ELECTRICAL CONDUCTIVITIES IN SAMPLES BY MEANS OF AN EDDY CURRENT SENSOR - In the method for determining the electrical conductivity in samples by means of an eddy current sensor, an alternating electrical field is excited within a sample by an alternating electrical voltage applied to a transmitter coil at a known measurement frequency f, ω and an alternating electromagnetic field which is directed against the alternating electrical field is thereby formed which is detected by a receiver coil or by a suitable detector and the complex impedance Z R+jX is determined. This procedure is carried out at different measurement frequencies f, ω once in air and once with the same measurement frequencies f, ω at a calibration body with a known electrical conductivity σ. The differences of the real and imaginary portions ΔR and ΔX of the measured values in air and over the calibration body are then divided by the respective measurement frequency f, ω; wherein a product ωσ is associated with each value pair ΔR/ω and ΔX/ω=ΔL in accordance with the associated measurement frequency ω and the known conductivity σ of the calibration body and a ωσ locus is presented in a Nyquist diagram with these value pairs. With a measured impedance Z at a measurement frequency ω of a sample having an unknown conductivity σ, a value pair ΔR/ω and ΔX/ω of the values in air is formed at the measured values over the sample and a point from the ωσ locus and thus a ωσ value is associated with this value pair ΔR/ω and ΔX/ω=ΔL and the unknown electrical conductivity σ of the sample material is determined from this using the known measurement frequency f, ω. In the calibration at a calibration body and a measurement at a sample, wherein the phase angle φ=tan(ΔX/ΔR) is calculated, instead of the ωσ locus, the function of the product ωσ=f(φ) can, however, also be calculated, with a product ωσ being associated with the phase angle φ on the measurement of an un known conductivity σ of the sample material with this function and thus the electrical conductivity σ of the sample can be determined with the known measurement frequency f, ω or in the calibration at a calibration body and a measurement at a sample, the quotient q=ΔX/ΔR or its reciprocal 1/q is calculated and, instead of the ωσ locus, the function of the product ωσ=f(q) or ωσ=f(1/g) is determined and a product ωσ is associated with the quotient q or 1/g on the measurement of an unknown conductivity σ of a sample with this function f(q) or f(1/q) and thus the electrical conductivity σ of the sample material is determined. | 01-07-2016 |
20160109408 | INSPECTION HEAD OF AN EDDY CURRENT NON-DESTRUCTIVE TESTING SENSOR AND SENSOR COMPRISING SUCH AN INSPECTION HEAD - An inspection head of an eddy current non-destructive testing sensor with separate transmitting and receiving functions includes a support whereon is arranged at least one transmitting/receiving element. Each element includes a circuit transmitting a local electromagnetic field, by circulating a predefined alternating current in the circuit, and an electromagnetic receiver sensitive to the locally transmitted electromagnetic field. The transmitting circuit is a portion of conductive sheet extending over a layer of the support layer in a predefined main direction of flow of the alternating current. The electromagnetic receiver is disposed facing the transmitting circuit relative to an axis normal to the layer of the support on which the portion of sheet extends to have an electromagnetic detection axis orthogonal to this normal axis and orthogonal to the predefined main direction of flow of the alternating current in the portion of conductive sheet. | 04-21-2016 |
20160123928 | EDDY CURRENT FLAW DETECTION DEVICE, EDDY CURRENT FLAW DETECTION METHOD, AND EDDY CURRENT FLAW DETECTION PROGRAM - There is provided an eddy current flaw detection technique capable of, even when inspecting an object having a narrow portion with a small curvature radius, recognizing detection sensitivity change due to change of attitude of a probe. | 05-05-2016 |
20160160629 | DEEP AZIMUTHAL INSPECTION OF WELLBORE PIPES - Methods including conveying a pipe inspection tool into a wellbore having at least a first pipe positioned within a second pipe, the pipe inspection tool including an electromagnetic sensor. A first excitation signal is transmitted from a first x-coil of the electromagnetic sensor, and a first response signal derived from the first excitation signal is received at the first x-coil or a second x-coil of the electromagnetic sensor. A second excitation signal is then transmitted from a first y-coil of the electromagnetic sensor, and a second response signal derived from the second excitation signal is received at the first y-coil or a second y-coil of the electromagnetic sensor. The first and second response signals are then compared to determine an azimuthal characteristic of the second pipe. | 06-09-2016 |
20160161449 | DEVICE FOR INSPECTING A SURFACE OF AN ELECTRICALLY CONDUCTIVE PART - A device for inspecting a surface of an electrically conductive part, the device having a plurality of eddy current probes arranged on a convex surface of the device together with an applicator for applying the probes against the surface to be inspected into which the device is inserted, wherein the probes are fastened on flexible strips extending beside one another in a longitudinal direction of the device, the applicator including a deformable material, that, on being compressed along the longitudinal direction, gives rise to expansion transversely to the longitudinal direction, the expansion deforming the strips so as to apply the probes against the surface. | 06-09-2016 |
20160168974 | IMAGING OF WELLBORE PIPES USING DEEP AZIMUTHAL ANTENNAS | 06-16-2016 |
20160168975 | MULTIPLE-DEPTH EDDY CURRENT PIPE INSPECTION WITH A SINGLE COIL ANTENNA | 06-16-2016 |
20160178579 | MICRO-FOCUSED IMAGING OF WELLBORE PIPE DEFECTS | 06-23-2016 |
20160195496 | Method and Apparatus for Determining the Health and Remaining Service Life of Austenitic Steel Reformer Tubes and the Like | 07-07-2016 |
20160195497 | Multi-Layer Eddy Current Probe, Method for Producing a Multi-Layer Eddy Current Probe, and Test Unit Comprising a Multi-Layer Eddy Current Probe | 07-07-2016 |
20160252481 | Pipe Damage Assessment System and Method | 09-01-2016 |