ECOLE NORMALE SUPERIEURE DE CACHAN Patent applications |
Patent application number | Title | Published |
20150219539 | METHOD OF DETERMINING THE NON-PROPAGATION THRESHOLD OF FATIGUE CRACKS AT HIGH FREQUENCY - A method of determining the non-propagation threshold of fatigue cracks at high frequency, wherein cyclic loading is exerted on at least one testpiece having an elliptical hole in a testpiece zone, the elliptical hole having a notch at one end and the testpiece being held between two rigid masses with two rigid pre-stress plates being arranged on either side of the at least one testpiece and each fastened at its two ends to the two rigid masses, which cyclic loading is at a frequency that is selected as being equal to the resonant frequency of the assembly including the testpiece, the masses, and the stress plates, so as to generate a fatigue crack from the notch, and then once it has been observed that the crack has stopped propagating, the final length of the crack is measured and a chart is used to determine the non-propagation threshold. | 08-06-2015 |
20130061987 | METHOD FOR MANUFACTURING A METAL ASSEMBLY - The invention relates to a method for manufacturing an aluminum/metal assembly including the steps involving: thermally processing an aluminum sheet by heating said sheet to a temperature of between 80% and 100% of the melting temperature of the material of which it consists for a sufficiently long duration to create and stabilize by allotropic conversion an alpha alumina layer at the surface of said aluminum sheet, and then cooling same; providing a metal layer having a ductility less than or equal to the ductility of the aluminum sheet after cooling, said layer having surface irregularities having a depth greater than or equal to the thickness of the alpha alumina layer; and roll bonding the aluminum layer and the metal layer to produce the metal assembly. | 03-14-2013 |
20130048154 | METHOD FOR MANUFACTURING A METAL ASSEMBLY HAVING A SHEET OF THERMALLY TREATED ALUMINUM TO OBTAIN ALPHA ALUMINA AND ANOTHER SHEET HAVING SURFACE IRREGULARITIES THAT BECOME EMBEDDED IN SAID SURFACE DURING ROLL BONDING - A method for manufacturing a metal assembly including an aluminum sheet and at least one metal sheet. An aluminum sheet is treated by heating to a temperature of between 80% and 100% of the melting temperature of the material of which it is comprised for a sufficiently long duration to create and stabilize an alpha alumina layer at the surface of the aluminum sheet. The sheet is then cooled. A metal sheet having a ductility less than or equal to the ductility of the alumimum sheet after cooling is provided, which has surface irregularities having a depth greater than or equal to the thickness of the alpha alumina layer. The aluminum sheet and the metal sheet are roll bonded in a rolling mill to produce the metal assembly, wherein the rolling mill includes at least one cylinder, the outer rolling surface of which is provided with raised portions. | 02-28-2013 |
20130022834 | Method For Manufacturing A Metal Assembly - The invention relates to a method for manufacturing an aluminum/metal assembly consisting of a metal layer made of a first metal on the surface of a metal object made of a second metal, the first or second metal being aluminum, wherein said method includes the following steps: placing a metal foam having an open porosity on a surface of the metal object, and applying mechanical sress to the metal foam in such a manner that said foam becomes embedded in the surface of the object. | 01-24-2013 |
20100141804 | Image data processing method by reducing image noise, and camera integrating means for implementing said method - The invention concerns image data processing, through noise reduction comprising the following steps: associating a learning zone (ZA) with a reference point (Pref) of the image (IM); for each variable point (PC, PC′,) of the learning zone, evaluating a distance (d, d′,) between: values of points in a first window (f | 06-10-2010 |
20090286720 | PHARMACEUTICAL COMPOSITION FOR THE DIAGNOSIS, PREVENTION OR TREATMENT OF A TUMORAL PATHOLOGY COMPRISING AN AGENT MODULATING THE POLYMERIZATION STATE OF ACTIN - A pharmaceutical composition for the treatment, prevention or diagnosis of a tumoral pathology comprising an active agent which stabilizes an actin network of a cellular cytoskeleton. | 11-19-2009 |
20080260588 | Composition Formed of Moldable Polymers Possessing a Lasting Hydrophilic Nature, Channels for Aqueous Fluids Based on this Composition, Microfluidic System Incorporating These Channels and Its Process of Manufacture - The invention relates to a durable hydrophilic non-porous surface-modified polymer composition, to aqueous fluid channels based on said composition, to a microfluidic system comprising said channels, to a method for the production thereof and to a microfluidic chip or cells incorporating said composition. | 10-23-2008 |