{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,6,29]],"date-time":"2026-06-29T14:09:50Z","timestamp":1782742190879,"version":"3.54.5"},"reference-count":40,"publisher":"MDPI AG","issue":"3","license":[{"start":{"date-parts":[[2021,1,28]],"date-time":"2021-01-28T00:00:00Z","timestamp":1611792000000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/501100012190","name":"Ministry of Science and Higher Education of the Russian Federation","doi-asserted-by":"publisher","award":["0685-2020-0017 (assignment no. 075-00187-20-02)"],"award-info":[{"award-number":["0685-2020-0017 (assignment no. 075-00187-20-02)"]}],"id":[{"id":"10.13039\/501100012190","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Sensors"],"abstract":"<jats:p>Since stringers are often applied in engineering constructions to improve thin-walled structures\u2019 strength, methods for damage detection at the joints between the stringer and the thin-walled structure are necessary. A 2D mathematical model was employed to simulate Lamb wave excitation and sensing via rectangular piezoelectric-wafer active transducers mounted on the surface of an elastic plate with rectangular surface-bonded obstacles (stiffeners) with interface defects. The results of a 2D simulation using the finite element method and the semi-analytical hybrid approach were validated experimentally using laser Doppler vibrometry for fully bonded and semi-debonded rectangular obstacles. A numerical analysis of fundamental Lamb wave scattering via rectangular stiffeners in different bonding states is presented. Two kinds of interfacial defects between the stiffener and the plate are considered: the partial degradation of the adhesive at the interface and an open crack. Damage indices calculated using the data obtained from a sensor are analyzed numerically. The choice of an input impulse function applied at the piezoelectric actuator is discussed from the perspective of the development of guided-wave-based structural health monitoring techniques for damage detection.<\/jats:p>","DOI":"10.3390\/s21030860","type":"journal-article","created":{"date-parts":[[2021,1,28]],"date-time":"2021-01-28T05:23:05Z","timestamp":1611811385000},"page":"860","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":21,"title":["Lamb Wave Scattering Analysis for Interface Damage Detection between a Surface-Mounted Block and Elastic Plate"],"prefix":"10.3390","volume":"21","author":[{"ORCID":"https:\/\/orcid.org\/0000-0003-4927-9623","authenticated-orcid":false,"given":"Mikhail V.","family":"Golub","sequence":"first","affiliation":[{"name":"Institute for Mathematics, Mechanics and Informatics, Kuban State University, 350040 Krasnodar, Russia"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-8771-8477","authenticated-orcid":false,"given":"Alisa N.","family":"Shpak","sequence":"additional","affiliation":[{"name":"Institute for Mathematics, Mechanics and Informatics, Kuban State University, 350040 Krasnodar, Russia"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-8888-2682","authenticated-orcid":false,"given":"Inka","family":"Mueller","sequence":"additional","affiliation":[{"name":"Institute for Mechanics, Mechatronics and Mechanical Engineering, Bochum University of Applied Sciences, D-44801 Bochum, Germany"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-0087-4448","authenticated-orcid":false,"given":"Sergey I.","family":"Fomenko","sequence":"additional","affiliation":[{"name":"Institute for Mathematics, Mechanics and Informatics, Kuban State University, 350040 Krasnodar, Russia"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-3886-1768","authenticated-orcid":false,"given":"Claus-Peter","family":"Fritzen","sequence":"additional","affiliation":[{"name":"Institute for Mechanics and Mechatronics, University of Siegen, D-57068 Siegen, Germany"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1968","published-online":{"date-parts":[[2021,1,28]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","unstructured":"Mueller, I., Moll, J., Tsch\u00f6ke, K., Prager, J., Kexel, C., Schubert, L., Lugovtsova, Y., Bach, M., and Vogt, T. 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