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Effects of Welded Pores on Fatigue Life of Titanium Alloy Electron-Beam Welded Joints

  • Beihang University

科研成果: 书/报告/会议事项章节会议稿件同行评审

摘要

The welded pore is one of common defects in titanium alloy electron-beam welded (EBW) joints and significantly influences its fatigue life. In this paper, effect of the welded pore on fatigue life of titanium alloy EBW joints were studied through an experimental investigation. Fatigue tests and fracture observation were conducted for EBW joints. Results showed that the welded pore is the most possible crack initiation. Through quantitative analysis on pore size and depth, a model was established to characterize the effect of initiation pore on fatigue life based on S-N model. Moreover, the effect of pore scatter on fatigue life scatter was investigated based on Monte-Carlo simulations, and the results indicated that scatter of pore size and depth is the key factor contributing to the wide scatter of fatigue life of welded joints.

源语言英语
主期刊名Proceedings - 2018 Prognostics and System Health Management Conference, PHM-Chongqing 2018
编辑Ping Ding, Chuan Li, Shuai Yang, Ping Ding, Rene-Vinicio Sanchez
出版商Institute of Electrical and Electronics Engineers Inc.
1144-1148
页数5
ISBN(电子版)9781538653791
DOI
出版状态已出版 - 4 1月 2019
活动2018 Prognostics and System Health Management Conference, PHM-Chongqing 2018 - Chongqing, 中国
期限: 26 10月 201828 10月 2018

出版系列

姓名Proceedings - 2018 Prognostics and System Health Management Conference, PHM-Chongqing 2018

会议

会议2018 Prognostics and System Health Management Conference, PHM-Chongqing 2018
国家/地区中国
Chongqing
时期26/10/1828/10/18

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