{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,3,13]],"date-time":"2026-03-13T20:03:08Z","timestamp":1773432188083,"version":"3.50.1"},"reference-count":31,"publisher":"MDPI AG","issue":"13","license":[{"start":{"date-parts":[[2024,6,29]],"date-time":"2024-06-29T00:00:00Z","timestamp":1719619200000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Sensors"],"abstract":"<jats:p>This paper presents an in-depth study of the stress wave behavior propagating in a Rayleigh\u2013Love rod with sudden cross-sectional area variations. The analytical solutions of stress waves are derived for the reflection and transmission propagation behavior at the interface of the cross-sectional area change in the rod, considering inertia and Poisson\u2019s effects on the rod material. Examples solved using the finite element method are provided to verify the correctness of the analytical results. Based on the forward analysis of Rayleigh\u2013Love wave propagation in a rod impacted by a striker rod, an impact-echo-type nondestructive testing (NDT) method is proposed to conduct defect assessment in rod-type structural components with sudden cross-sectional area changes within a cover medium. This proposed NDT method can identify the location, extension, and cross-sectional area drop ratios of an irregular zone in the rod to be inspected.<\/jats:p>","DOI":"10.3390\/s24134230","type":"journal-article","created":{"date-parts":[[2024,7,1]],"date-time":"2024-07-01T10:14:46Z","timestamp":1719828886000},"page":"4230","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":2,"title":["Stress Wave Propagation in a Rayleigh\u2013Love Rod with Sudden Cross-Sectional Area Variations Impacted by a Striker Rod"],"prefix":"10.3390","volume":"24","author":[{"given":"Chung-Yue","family":"Wang","sequence":"first","affiliation":[{"name":"Department of Civil Engineering, National Central University, No. 300, Chungda Road, Chung-Li District, Taoyuan 32001, Taiwan"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-5020-4886","authenticated-orcid":false,"given":"Nguyen Ngoc","family":"Thang","sequence":"additional","affiliation":[{"name":"Department of Civil Engineering, National Central University, No. 300, Chungda Road, Chung-Li District, Taoyuan 32001, Taiwan"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-1539-9379","authenticated-orcid":false,"given":"Helsin","family":"Wang","sequence":"additional","affiliation":[{"name":"HCK Geophysical, 9F-3, No. 79, Section 2, Roosevelt Road, Taipei 10646, Taiwan"}]}],"member":"1968","published-online":{"date-parts":[[2024,6,29]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","unstructured":"Tesfamariam, S., and Mart\u00edn-P\u00e9rez, B. 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