Class / Patent application number | Description | Number of patent applications / Date published |
073582000 | Including structural bond evaluation | 8 |
20110314915 | DAMAGE DETECTION USING LASER VIBROMETRY - Methods and apparatus for exciting a structure and determining its structural integrity. In particular, methods of nonlinear analysis are used to compare first and second response datasets, each dataset resulting from a different excitation amplitude that the other dataset. | 12-29-2011 |
20120036933 | METHOD FOR THE NON-DESTRUCTIVE AND CONTACTLESS CHARACTERIZATION OF A SUBSTANTIALLY SPHERICAL MULTILAYERED STRUCTURE AND RELATED DEVICE - A method is provided for the non-destructive and contactless characterization of a multilayered structure having a substantially spherical shape and including at least two layers, separated by interfaces. The method includes using a laser for locally heating the structure in a thermoelastic state so that the structure is vibrated in a non-destructive manner, measuring the resonance frequencies of the vibration modes of the structure and deriving at least one characteristic concerning the integrity or the shape or the mechanical behavior of the structure from the resonance frequencies of the structure. | 02-16-2012 |
20130139596 | Sensing System and Method - A sensing system which comprises a material ( | 06-06-2013 |
20130213137 | METHOD AND APPARATUS FOR DETECTING CRACKS AND DELAMINATION IN COMPOSITE MATERIALS - A method is disclosed for testing for delamination of a first composite component from a second composite component a composite material. The method comprises coupling a broad-band actuator to the composite material and connecting sweeping frequencies to the broad-band actuator for vibrating the composite material. An acoustic sensor is coupled to the composite material for measuring a resonant frequency curve of the vibrating composite material. The measured resonant frequency curve of the vibrating composite material is compared with a reference resonant frequency curve. A delaminated composite material produces a change in the measured resonant frequency curve relative to the reference resonant frequency curve. The method is suitable for detecting delamination in fuel cells as well as ceramic body armor. | 08-22-2013 |
20130269436 | Flaw Detection Method and Apparatus for Fuel Cell Components - Various embodiments provide systems and methods for detecting defects in components of a fuel cell. Embodiment methods and systems include directing acoustic energy into the component, detecting acoustic energy from the component, analyzing a characteristic of the detected acoustic energy, and based on the analyzing, determining the presence or absence of a defect in the component. | 10-17-2013 |
20140102200 | METHODS FOR NON-DESTRUCTIVELY EVALUATING A JOINED COMPONENT - A method for non-destructively evaluating a joined component includes inducing vibrations in the joined component within a range of frequencies, acquiring a resonance spectra from the joined component resulting from the induced vibrations, and analyzing the resonance spectra using Acoustic Sensor Testing (AST). | 04-17-2014 |
20140318247 | APPARATUS AND METHOD FOR ASSESSING PERCUTANEOUS IMPLANT INTEGRITY - Provided is an apparatus for assessing interface integrity between a medium and an implant. A first signal is translated from a motion of an impact body during impact with an abutment connected to the implant. In some embodiments, the first signal is filtered using a zero phase shift filter and then used for assessing the interface integrity. Since no phase shift is introduced, the interface integrity is accurately assessed. In another embodiment, the apparatus maintains a system model for impacting the impact body against the abutment. The apparatus analytically determines an interface property by applying a system property that has been determined to the system model. An accurate system model allows for an accurate assessment. According to another broad aspect, there is provided a method of conducting the impact test. According to the method, a person ensures that the impact body impacts against a consistent portion of the abutment. | 10-30-2014 |
20160084802 | PROCESS FOR DETERMINING WELD QUALITY USING FLEXURAL CHARACTERISTICS - A process for determining the quality of a laser weld-seam, whereby a welded plate and a geometrically equivalent non-welded plate are subjected to a physical impact to generate a natural vibration frequency. The natural vibration frequency of the welded plate and the non-welded plate is then measured with an accelerometer and compared. The uniformity of the weld is then determined by the similarity between the natural vibration frequency of the welded plate and the geometrically equivalent non-welded plate. | 03-24-2016 |