Patent SG-11201907545Q-A (SG)
Title: Systems and methods for monitoring plastic deformation of a structured material
Inventor: YAO KUI
IPC: H03H9/02
Filed: 2018-02-23
Abstract: INTERNATIONAL APPLICATION PUBLISHED UNDER THE PATENT COOPERATION TREATY (PCT) (19) World Intellectual Property Organization International Bureau (43) International Publication Date 30 August 2018 (30.08.2018) WIPO I PCT IiiimmoimiolollmonolomoniummommovoimIE (10) International Publication Number WO 2018/156084 Al (51) International Patent Classification: GO1B 15/06 (2006.01) GOlL 1/16 (2006.01) G01N 29/14 (2006.01) G01L 1/25 (2006.01) H03H 9/02 (2006.01) (21) International Application Number: PCT/SG2018/050085 (22) International Filing Date: 23 February 2018 (23.02.2018) (25) Filing Language: English (26) Publication Language: English (30) Priority Data: 10201701466W 23 February 2017 (23.02.2017) SG (71) Applicant: AGENCY FOR SCIENCE, TECHNOLO- GY AND RESEARCH [SG/SG]; 1 Fusionopolis Way, Connexis North Tower, #20-10, Singapore 138632 (SG). (72) Inventors: YAO, Kui; c/o Institute of Materials Research and Engineering, 2 Fusionopolis Way, #08-03, Innovis, Singapore 138634 (SG). GUO, Shifeng; c/o Institute of Materials Research and Engineering, 2 Fusionopolis Way, #08-03, Innovis, Singapore 138634 (SG). CHEN, Shuting; c/o Institute of Materials Research and Engineering, 2 Fu- sionopolis Way, #08-03, Innovis, Singapore 138634 (SG). ZHANG, Lei; c/o Institute of Materials Research and En- gineering, 2 Fusionopolis Way, #08-03, Innovis, Singapore 138634 (SG). (74) Agent: SPRUSON & FERGUSON (ASIA) PTE LTD; P.O. Box 1531, Robinson Road Post Office, Singapore 903031 (SG). (81) Designated States (unless otherwise indicated, for every kind of national protection available): 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, (54) Title: SYSTEMS AND METHODS FOR MONITORING PLASTIC DEFORMATION OF A STRUCTURED MATERIAL 208 00 O 00 O C 234 f - ligh order harmOrliC acodsric nnal deTected VVVV's , „f 200 FIG. 2 216 (57) : Systems and methods for monitoring plastic deformation of a structural material are provided. An acoustic wave actuator is configured to generate acoustic wave signals to be propagated within the structural material and is in-situ fabricated on the structural material at a first location. An alternating current (AC) electric signal source drives the acoustic wave actuator to generate the acoustic wave signals at a predetermined frequency. One or more acoustic wave sensors detect the acoustic wave signals generated by the acoustic wave actuator and propagated within the structural material. More particularly, the acoustic wave detectors are configured to detect both fundamental and second harmonic acoustic signals at the predetermined frequency. The acoustic wave sensors are in-situ fabricated on the structural material at one or more second locations. [Continued on next page] WO 2018/156084 Al MIDEDIMOMOIDEIREEMOMOMMIRMOHIMEN 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. (84) Designated States (unless otherwise indicated, for every kind of regional protection available): ARIPO (BW, GH, GM, KE, LR, LS, MW, MZ, NA, RW, SD, SL, ST, SZ, TZ, UG, ZM, ZW), Eurasian (AM, AZ, BY, KG, KZ, RU, TJ, TM), European (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), OAPI (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, KM, ML, MR, NE, SN, TD, TG). Declarations under Rule 4.17: — of inventorship (Rule 4.17 (iv)) Published: with international search report (Art. 21(3)) in black and white; the international application as filed contained color or greyscale and is available for download from PATENTSCOPE