{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,8,4]],"date-time":"2026-08-04T17:07:50Z","timestamp":1785863270121,"version":"3.56.0"},"reference-count":35,"publisher":"MDPI AG","issue":"23","license":[{"start":{"date-parts":[[2021,12,6]],"date-time":"2021-12-06T00:00:00Z","timestamp":1638748800000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"name":"Ministry of Science and Technology of Taiwan, ROC","award":["108-2218-E-992-320-MY2"],"award-info":[{"award-number":["108-2218-E-992-320-MY2"]}]},{"name":"Ministry of Science and Technology of Taiwan, ROC","award":["109-2622-E-992 -013 -CC3"],"award-info":[{"award-number":["109-2622-E-992 -013 -CC3"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Materials"],"abstract":"<jats:p>Ti6Al4V specimens with porous structures can be fabricated by additive manufacturing to obtain the desired Young\u2019s modulus. Their mechanical strength and deformation behavior can be evaluated using finite element analysis (FEA), with various models and simulation methodologies described in the existing literature. Most studies focused on the evaluation accuracy of the mechanical strength and deformation behavior using complex models. This study presents a simple elastic model for brittle specimens followed by an electron beam additive manufacturing (EBAM) process to predict the initial crack site and threshold of applied stress related to the failure of cubic unit lattice structures. Six cubic lattice specimens with different porosities were fabricated by EBAM, and compression tests were performed and compared to the FEA results. In this study, two different types of deformation behavior were observed in the specimens with low and high porosities. The adopted elastic model and the threshold of applied stress calculated via FEA showed good capabilities for predicting the initial crack sites of these specimens. The methodology presented in this study should provide a simple yet accurate method to predict the fracture initiation of porous structure parts.<\/jats:p>","DOI":"10.3390\/ma14237467","type":"journal-article","created":{"date-parts":[[2021,12,6]],"date-time":"2021-12-06T22:18:42Z","timestamp":1638829122000},"page":"7467","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":5,"title":["Finite Element Analysis on Initial Crack Site of Porous Structure Fabricated by Electron Beam Additive Manufacturing"],"prefix":"10.3390","volume":"14","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-6854-3453","authenticated-orcid":false,"given":"Meng-Hsiu","family":"Tsai","sequence":"first","affiliation":[{"name":"Department of Mold and Die Engineering, National Kaohsiung University of Science and Technology, Kaohsiung 807618, Taiwan"},{"name":"School of Dentistry, College of Dental Medicine, Kaohsiung Medical University, Kaohsiung 80708, Taiwan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Chia-Ming","family":"Yang","sequence":"additional","affiliation":[{"name":"Department of Materials Science and Engineering, National Cheng-Kung University, Tainan 701, Taiwan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Yu-Xuan","family":"Hung","sequence":"additional","affiliation":[{"name":"Department of Mold and Die Engineering, National Kaohsiung University of Science and Technology, Kaohsiung 807618, Taiwan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Chao-Yong","family":"Jheng","sequence":"additional","affiliation":[{"name":"Department of Materials Science and Engineering, National Cheng-Kung University, Tainan 701, Taiwan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Yen-Ju","family":"Chen","sequence":"additional","affiliation":[{"name":"Metal Processing R & D Department, Metal Industries Research and Development Centre (MIRDC), Kaohsiung 811, Taiwan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Ho-Chung","family":"Fu","sequence":"additional","affiliation":[{"name":"Department of Mold and Die Engineering, National Kaohsiung University of Science and Technology, Kaohsiung 807618, Taiwan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"In-Gann","family":"Chen","sequence":"additional","affiliation":[{"name":"Department of Materials Science and Engineering, National Cheng-Kung University, Tainan 701, Taiwan"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1968","published-online":{"date-parts":[[2021,12,6]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"383","DOI":"10.1186\/s13018-020-01913-1","article-title":"A new 3D printing porous trabecular titanium metal acetabular cup for primary total hip arthroplasty: A minimum 2-year follow-up of 92 consecutive patients","volume":"15","author":"Geng","year":"2020","journal-title":"J. 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