{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,2,7]],"date-time":"2026-02-07T00:26:56Z","timestamp":1770424016932,"version":"3.49.0"},"reference-count":42,"publisher":"MDPI AG","issue":"17","license":[{"start":{"date-parts":[[2024,8,27]],"date-time":"2024-08-27T00:00:00Z","timestamp":1724716800000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"name":"Japan Keirin Autorace foundation (JKA)"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Materials"],"abstract":"<jats:p>Crack detection in high-pressure hydrogen gas components, such as pipes, is crucial for ensuring the safety and reliability of hydrogen infrastructure. This study conducts the nondestructive testing of crack propagation in steel piping under cyclic compressive loads in the presence of hydrogen in the material. The specimens were hydrogen-precharged through immersion in a 20 mass% ammonium thiocyanate solution at 40 \u00b0C for 72 h. The crack growth rate in hydrogen-precharged specimens was approximately 10 times faster than that in uncharged specimens, with cracks propagating from the inner to outer surfaces of the pipe. The fracture surface morphology differed significantly, with flat surfaces in hydrogen-precharged materials and convex or concave surfaces in uncharged materials. Eddy current and hammering tests revealed differences in the presence of large cracks between the two materials. By contrast, hammering tests revealed differences in the presence of a half size crack between the two materials. These findings highlight the effect of hydrogen precharging on crack propagation in steel piping and underscore the importance of early detection methods.<\/jats:p>","DOI":"10.3390\/ma17174237","type":"journal-article","created":{"date-parts":[[2024,8,27]],"date-time":"2024-08-27T09:26:51Z","timestamp":1724750811000},"page":"4237","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":6,"title":["Hydrogen Embrittlement Detection Technology Using Nondestructive Testing for Realizing a Hydrogen Society"],"prefix":"10.3390","volume":"17","author":[{"given":"Yamato","family":"Abiru","sequence":"first","affiliation":[{"name":"National Institute of Technology, Sasebo College, Nagasaki 857-1193, Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Hiroshi","family":"Nishiguchi","sequence":"additional","affiliation":[{"name":"National Institute of Technology, Sasebo College, Nagasaki 857-1193, Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Masato","family":"Maekawa","sequence":"additional","affiliation":[{"name":"Department of Electrical and Electronic Information Engineering, Toyohashi University of Technology, Toyohashi 441-8580, Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Takara","family":"Nagata","sequence":"additional","affiliation":[{"name":"Department of Computer Science and Engineering, Toyohashi University of Technology, Toyohashi 441-8580, Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-0709-062X","authenticated-orcid":false,"given":"Toshiya","family":"Itaya","sequence":"additional","affiliation":[{"name":"National Institute of Technology, Suzuka College, Mie 510-0294, Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Michie","family":"Koga","sequence":"additional","affiliation":[{"name":"Kyuken Co., Ltd., Saga 849-0932, Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Toshiomi","family":"Nishi","sequence":"additional","affiliation":[{"name":"National Institute of Technology, Suzuka College, Mie 510-0294, Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"1968","published-online":{"date-parts":[[2024,8,27]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","unstructured":"Manoharan, Y., Hosseini, S.E., Butler, B., Alzhahrani, H., Senior, B.T.F., Ashuri, T., and Krohn, J. 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