Centre National De La Recherche Scientifique

Université Pierre Et Marie Curie (Paris 6)

Azalee

Psa Automobiles Sa

Université Pierre Et Marie Curie

Stellantis Auto Sas

Evolis

Evolis Sa

Ludovic Moreau

Pascal Laugier

Maryline Talmant

Jean-Gabriel Minonzio

Florent Merlet

Emmanuel Berthaud

Gaël Branchereau

Laurent Rivierre

Lionel Saint Denis

Device for the representation, in a frequency-wave number reference frame f-k, of the propagation of an ultrasound wave in a dihedral guide (), which comprises ultrasound emitters () referenced by 'Ej' with j an integer varying between 1 and N, N a strictly positive integer and ultrasound receivers () referenced by 'Ri' with i an integer varying between 1 and M, M a strictly positive integer, the receivers being disposed spatially over a first segment of a straight line according to a regular pitch 'A', which comprises means for processing the signal received by the receivers, originating from the emitters, and in which the processing means comprise means for calculating a modified discrete spatial Fourier transform, for a spatial integration variable &#x201c;x&#x201d;, centered in the middle of said first segment and running through the receivers in the direction of increasing x, and for a wave vector k(x) equal to a product k.P(x), with k a constant coefficient in x and included between 0 and 2*Pi/A, and with P(x) a polynomial in x, of coefficient of degree 0 in x equal to 1 and of coefficient &#x201c;C&#x201d; of degree 1 in x such that C.A lies between &#x2212; 1/10 and + 1/10

Ultrasound method and device for representing the propagation of ultrasound waves in a guide of linearly variable thickness

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Paris, France

Ludovic Moreau