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1. (WO2014191661) IMPROVED METHOD FOR INSPECTION BY THE TRANSMISSION OF ULTRASOUNDS
Latest bibliographic data on file with the International Bureau   

Pub. No.: WO/2014/191661 International Application No.: PCT/FR2014/051202
Publication Date: 04.12.2014 International Filing Date: 22.05.2014
IPC:
G01N 29/11 (2006.01) ,G01N 29/44 (2006.01)
G PHYSICS
01
MEASURING; TESTING
N
INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
29
Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
04
Analysing solids
11
by measuring attenuation of acoustic waves
G PHYSICS
01
MEASURING; TESTING
N
INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
29
Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
44
Processing the detected response signal
Applicants:
SNECMA [FR/FR]; 2 boulevard du Général Martial Valin F-75015 Paris, FR
Inventors:
BROUSSAIS-COLELLA, Nicolas; FR
CHATELLIER, Jean-Yves; FR
DUVAL, Jérémy; FR
Agent:
REGIMBEAU; 20, rue de Chazelles F-75847 Paris Cedex 17, FR
Priority Data:
135495630.05.2013FR
Title (EN) IMPROVED METHOD FOR INSPECTION BY THE TRANSMISSION OF ULTRASOUNDS
(FR) PROCEDE D'INSPECTION PAR TRANSMISSION D'ULTRASONS AMELIORE
Abstract:
(EN) The invention relates to a method for inspecting an object by means of ultrasound transmission, comprising the steps consisting in: sweeping an ultrasound beam over a reference part that has the same geometry as the object to be inspected, and measuring the amplitude (1100) transmitted through the part in order to obtain (1200) a mapping thereof, the ultrasound beam being amplified with a reference gain; determining (1300) gain corrections to be added to the reference gain at certain points during the sweeping of the reference part in order to obtain an ultrasound beam amplitude transmitted through the part which is constant at each point of the mapping; and sweeping an ultrasound beam over the object to be inspected and measuring the transmitted amplitude (2100), the gain applied to the various points during the sweeping corresponding to the reference gain corrected on the basis of said corrections.
(FR) L'invention propose un procédé d'inspection d'un objet par transmission d'ultrasons, comprenant les étapes consistant à: -mettre en œuvre un balayage d'un faisceau d'ultrasons sur une pièce de référence présentant une géométrie identique à l'objet à inspecter, et une mesure de l'amplitude (1100) transmise à travers la pièce pour en déduire (1200) une cartographie,le faisceau d'ultrasons étant amplifié avec un gain de référence, -déterminer (1300) des corrections de gain à apporter au gain de référence en des points du balayage de la pièce de référence pour obtenir une amplitude du faisceau d'ultrasons transmise à travers la pièce constante pour tous les points de la cartographie, -mettre en œuvre un balayage d'un faisceau d'ultrasons sur l'objet à inspecter et une mesure de l'amplitude transmise (2100), le gain appliqué aux différents points du balayage correspondant au gain de référence corrigé à partir desdites corrections.
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Designated States: AE, AG, AL, AM, AO, AT, AU, AZ, BA, BB, BG, BH, BN, BR, BW, BY, BZ, CA, CH, CL, CN, CO, CR, CU, CZ, DE, DK, DM, DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, HR, HU, ID, IL, IN, IR, IS, JP, KE, KG, KN, KP, KR, KZ, LA, LC, LK, LR, LS, LT, LU, LY, MA, MD, ME, MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, OM, PA, PE, PG, PH, PL, PT, QA, RO, RS, RU, RW, SA, SC, SD, SE, SG, SK, SL, SM, ST, SV, SY, TH, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, ZW
African Regional Intellectual Property Organization (ARIPO) (BW, GH, GM, KE, LR, LS, MW, MZ, NA, RW, SD, SL, SZ, TZ, UG, ZM, ZW)
Eurasian Patent Office (AM, AZ, BY, KG, KZ, RU, TJ, TM)
European Patent Office (EPO) (AL, AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HR, HU, IE, IS, IT, LT, LU, LV, MC, MK, MT, NL, NO, PL, PT, RO, RS, SE, SI, SK, SM, TR)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, KM, ML, MR, NE, SN, TD, TG)
Publication Language: French (FR)
Filing Language: French (FR)