Patents by Inventor Frédéric Jenson
Frédéric Jenson has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 11747307Abstract: A method for non-destructive testing of a mechanical part by a multi-element transducer having piezoelectric elements, where: for each element e(i) of the transducer, the emission of an ultrasonic wave at a given frequency and measurement, by each element e(j) distinct from the element e(i), of a time-varying signal kij(t) representing the back-scattered ultrasonic wave received by the element e(j); the determination of a first matrix of time-varying components based on measured signals kij(t), i, j=1, . . . , N; the determination of a second matrix of frequency components corresponding to a determined frequency based on the frequency of the ultrasonic wave by applying a Fourier transform to said first matrix; the filtering of said second matrix comprising a projection of it onto a single scattering sub-space determined by means of a numerical calculation using a ray tracing algorithm; and the verification of the integrity of the mechanical part by using said filtered second matrix.Type: GrantFiled: April 19, 2019Date of Patent: September 5, 2023Assignees: SAFRAN, CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUEInventors: Aurélien Baelde, Claire Prada, Frédéric Jenson
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Patent number: 11480550Abstract: The invention concerns a method for the non-destructive mapping of a component, in order to determine an elongation direction of the elongate microstructure of the component at at least one point of interest, characterised in that it comprises at least two successive intensity measurement steps comprising the following steps: a sub-step of rotating a linear transducer into a plurality of angular positions, said linear transducer comprising a plurality of transducer elements, a sub-step of emitting a plurality of elementary ultrasonic beams at each angular position, a sub-step of measuring a plurality of backscattered signals resulting from the backscattering of the elementary ultrasonic beams by said elongate microstructure, the intensity measurement steps making it possible to obtain two series of intensities measured according to two axes of rotation, and in that the method comprises a step of combining the measured series of intensities so as to determine the elongation direction of the microstructure at sType: GrantFiled: March 13, 2019Date of Patent: October 25, 2022Assignees: CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE, SAFRANInventors: Aurelien Baelde, Frederic Jenson, Claire Prada
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Patent number: 11085900Abstract: A method for nondestructively testing a part comprising an elongate microstructure is disclosed.Type: GrantFiled: January 23, 2018Date of Patent: August 10, 2021Assignees: SAFRAN, CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE, ECOLE SUPERIEURE DE PHYSIQUE ET DE CHIMIE, INDUSTRIELLES DE LA VILLE DE PARISInventors: Aurélien Baelde, Frédéric Jenson, Mathias Fink, Jérôme Laurent, Claire Prada
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Publication number: 20210239652Abstract: The invention relates to a method for the non-destructive testing of a mechanical part (2) by propagation of ultrasonic waves accomplished by means of a multi-element transducer (3) placed opposite the mechanical part and comprising a plurality of piezoelectric elements e(1), e(2), . . . , e(N), N>1. It comprises: for each element e(i) of the transducer, the emission of an ultrasonic wave at a given frequency and measurement, by each element e(j) distinct from the element e(i), of a time-varying signal kij(t) representing the back-scattered ultrasonic wave received by the element e(j); the determination of a first matrix of time-varying components based on the measured signals kij(t), i,j=1, . . .Type: ApplicationFiled: April 19, 2019Publication date: August 5, 2021Applicants: SAFRAN, CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUEInventors: Aurélien BAELDE, Claire PRADA, Frédéric JENSON
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Patent number: 11060860Abstract: A method of non-destructively inspecting an adhesively bonded assembly of first, second, and third materials includes generating guided waves in the adhesively bonded assembly and establishing a dispersion curve plot in a first reference frame on the basis of receiving the guided waves. The method further includes comparing the dispersion curve plot with a plurality of reference dispersion curves established in the first reference frame, each of the reference dispersion curves being obtained by generating guided waves in a reference adhesively bonded assembly. Finally, the method includes estimating at least one of the thicknesses of the materials in the adhesively bonded assembly under inspection.Type: GrantFiled: November 23, 2017Date of Patent: July 13, 2021Assignees: SAFRAN, COMMISSARIAT A L'ENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVESInventors: Mathieu Loic Ducousso, Frederic Jenson, Bastien Jacques Chapuis, Guillemette Danielle Joelle Marie Ribay, Laura Taupin
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Patent number: 11047830Abstract: A characterization device for non-destructively characterizing a material includes emitter/receiver cells, each cell being able, in an emit mode, to emit ultrasound waves towards the material for characterizing, and, in a receive mode, to receive ultrasound waves that have been transmitted through the material. The non-destructive characterization device includes a ring made up of a plurality of adjacent angular sectors, each angular sector including ultrasound cells stacked in a radial direction of the ring.Type: GrantFiled: December 13, 2017Date of Patent: June 29, 2021Assignee: SAFRANInventors: Mathieu Loic Ducousso, Frederic Jenson
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Publication number: 20210025855Abstract: The invention concerns a method for the non-destructive mapping of a component, in order to determine an elongation direction of the elongate microstructure of the component at at least one point of interest, characterised in that it comprises at least two successive intensity measurement steps comprising the following steps: a sub-step of rotating a linear transducer into a plurality of angular positions, said linear transducer comprising a plurality of transducer elements, a sub-step of emitting a plurality of elementary ultrasonic beams at each angular position, a sub-step of measuring a plurality of backscattered signals resulting from the backscattering of the elementary ultrasonic beams by said elongate microstructure, the intensity measurement steps making it possible to obtain two series of intensities measured according to two axes of rotation, and in that the method comprises a step of combining the measured series of intensities so as to determine the elongation direction of the microstructure at sType: ApplicationFiled: March 13, 2019Publication date: January 28, 2021Inventors: Aurelien BAELDE, Frederic JENSON, Claire PRADA
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Publication number: 20200149881Abstract: A method of non-destructively inspecting an adhesively bonded assembly of first, second, and third materials includes generating guided waves in the adhesively bonded assembly and establishing a dispersion curve plot in a first reference frame on the basis of receiving the guided waves. The method further includes comparing the dispersion curve plot with a plurality of reference dispersion curves established in the first reference frame, each of the reference dispersion curves being obtained by generating guided waves in a reference adhesively bonded assembly. Finally, the method includes estimating at least one of the thicknesses of the materials in the adhesively bonded assembly under inspection.Type: ApplicationFiled: November 23, 2017Publication date: May 14, 2020Applicants: SAFRAN, COMMISSARIAT A L'ENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVESInventors: Mathieu Loic DUCOUSSO, Frederic JENSON, Bastien Jacques CHAPUIS, Guillemette Danielle Joelle Marie RIBAY, Laura TAUPIN
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Publication number: 20200088689Abstract: A characterization device for non-destructively characterizing a material includes emitter/receiver cells, each cell being able, in an emit mode, to emit ultrasound waves towards the material for characterizing, and, in a receive mode, to receive ultrasound waves that have been transmitted through the material. The non-destructive characterization device includes a ring made up of a plurality of adjacent angular sectors, each angular sector including ultrasound cells stacked in a radial direction of the ring.Type: ApplicationFiled: December 13, 2017Publication date: March 19, 2020Applicant: SAFRANInventors: Mathieu Loic DUCOUSSO, Frederic JENSON
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Publication number: 20190360969Abstract: A method for nondestructively testing a part comprising an elongate microstructure is disclosed.Type: ApplicationFiled: January 23, 2018Publication date: November 28, 2019Applicants: SAFRAN, CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE, ECOLE SUPERIEURE DE PHYSIQUE ET DE CHIMIE INDUSTRIELLES DE LA VILLE DE PARISInventors: Aurélien Baelde, Frédéric Jenson, Mathias Fink, Jérôme Laurent, Claire Prada