A new bilinear model for fatigue crack growth evaluation. (December 2022)

• Record Type: Journal Article
• Authors: Zhuang, Bin-Bin; Liu, Yu-Xin; Du, Yan-Nan; Zhu, Ming-Liang; Xuan, Fu-Zhen
• Is Part Of: International journal of pressure vessels and piping. Volume 200(2022)
• Publication Date: 2022-12
• Subjects: Fatigue crack growth -- Fatigue threshold -- Transition point -- Fatigue evaluation; Pressure vessels -- Periodicals; Pipe -- Periodicals; Récipients sous pression -- Périodiques; Tuyaux -- Périodiques; Pipe; Pressure vessels; Periodicals; 681.76041
• DOI: 10.1016/j.ijpvp.2022.104850
• Languages: English
• ISSNs: 0308-0161

Abstract

Abstract: Comparisons were made among the evaluation models of fatigue crack growth in various codes, standards, and guidelines, to illustrate the significance of transition point in accuracy. A new bilinear model was established with transition point and fatigue threshold fully considered, and was found more accurate than existing codes and standards for evaluation of fatigue crack growth behavior in both Paris and near-threshold regimes. Highlights: Conservativeness in existing codes and standards for fatigue crack growth assessment was compared. Transition point in fatigue crack growth was found significant in assessment accuracy. A new bilinear model for fatigue crack growth evaluation was developed.