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1. (WO2019063588) HONEYCOMB STRUCTURE COMPRISING AN INTEGRITY MONITORING DEVICE AND METHOD FOR MONITORING SUCH A STRUCTURE
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Pub. No.: WO/2019/063588 International Application No.: PCT/EP2018/076061
Publication Date: 04.04.2019 International Filing Date: 26.09.2018
IPC:
H01L 41/04 (2006.01) ,G01N 29/04 (2006.01) ,G01N 29/07 (2006.01) ,H01L 41/113 (2006.01)
H ELECTRICITY
01
BASIC ELECTRIC ELEMENTS
L
SEMICONDUCTOR DEVICES; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR
41
Piezo-electric devices in general; Electrostrictive devices in general; Magnetostrictive devices in general; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
02
Details
04
of piezo-electric or electrostrictive elements
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
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
07
by measuring propagation velocity or propagation time of acoustic waves
H ELECTRICITY
01
BASIC ELECTRIC ELEMENTS
L
SEMICONDUCTOR DEVICES; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR
41
Piezo-electric devices in general; Electrostrictive devices in general; Magnetostrictive devices in general; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
08
Piezo-electric or electrostrictive elements
113
with mechanical input and electrical output
Applicants:
COMMISSARIAT A L'ENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVES [FR/FR]; 25 rue Leblanc - Bâtiment "Le Ponant D" 75015 PARIS, FR
SAFRAN [FR/FR]; 2 Boulevard du Général Martial Valin 75015 PARIS, FR
Inventors:
CHAPUIS, Bastien; FR
BOLZMACHER, Christian; FR
LAFFONT, Guillaume; FR
Agent:
FONQUERNIE, Sophie; FR
ESSELIN, Sophie; FR
Priority Data:
175899528.09.2017FR
Title (EN) HONEYCOMB STRUCTURE COMPRISING AN INTEGRITY MONITORING DEVICE AND METHOD FOR MONITORING SUCH A STRUCTURE
(FR) STRUCTURE ALVEOLAIRE COMPRENANT UN DISPOSITIF DE CONTROLE D'INTEGRITE ET PROCEDE DE CONTRÔLE D'UNE TELLE STRUCTURE
Abstract:
(EN) The disclosure relates to a honeycomb structure (1) comprising a plurality of cells (10, 10a, 10b), each cell being delimited by a wall, said honeycomb structure including an integrity monitoring device comprising: • - at least one piezoelectric transducer (20a) able to transmit an elastic wave such that said transmitted wave propagates over a given distance in the structure, and positioned on the wall of a cell of said structure so as to have at least one point of contact with said cell; • - at least one piezoelectric transducer (20b) able to receive, from the transmitted elastic wave, an elastic wave that has propagated over a given distance in the structure, and positioned on the wall of a cell of said structure so as to have at least one point of contact with said cell. The disclosure also relates to a method for monitoring the integrity of such a honeycomb structure.
(FR) La divulgation concerne une structure alvéolaire (1) comprenant plusieurs alvéoles (10, 10a, 10b), chaque alvéole étant délimitée par une paroi, ladite structure alvéolaire comportant un dispositif de contrôle d'intégrité comprenant: • - au moins un transducteur piézoélectrique (20a) apte à émettre une onde élastique de manière à ce que ladite onde émise se propage sur une distance donnée dans la structure, et positionné sur la paroi d'une alvéole de ladite structure de manière à présenter au moins un point de contact avec ladite alvéole; • - au moins un transducteur piézoélectrique (20b) apte à recevoir, depuis l'onde élastique émise, une onde élastique s'étant propagée sur une distance donnée dans la structure, et positionné sur la paroi d'une alvéole de ladite structure de manière à présenter au moins un point de contact avec ladite alvéole. La divulgation concerne également un procédé de contrôle d'intégrité d'une telle structure alvéolaire.
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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, DJ, DK, DM, DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, HR, HU, ID, IL, IN, IR, IS, JO, JP, KE, KG, KH, KN, KP, KR, KW, KZ, LA, LC, LK, LR, LS, 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, ST, 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)