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Hardness-Based Non-destructive Method for Developing Location Specific S-N Curves for Fatigue Life Evaluation
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作者 Chaminda S. Bandara Sudath C. Siriwardane +1 位作者 Udaya I. Dissanayake Ranjith Dissanayake 《Journal of Civil Engineering and Architecture》 2016年第2期183-191,共9页
This paper first describes the importance of using location specific S-N curves for fatigue damage assessment of existing steel structures. It discusses the existing concepts and methods for developing S-N curves usin... This paper first describes the importance of using location specific S-N curves for fatigue damage assessment of existing steel structures. It discusses the existing concepts and methods for developing S-N curves using empirical formulae and monotonic strength parameters, such as the ultimate tensile strength and hardness. It also discusses relationships among these monotonic parameters. Then it presents formulae for developing hardness-based full range S-N curves for medium strength steels. The formulae are verified using experimental data obtained from both monotonic and cyclic testing. Finally, it describes the advantages of these hardness-based formulae for developing location specific S-N curves as hardness testing is a non-destructive test which can be carried out on specific locations in structures. 展开更多
关键词 stress life curve fatigue life HARDNESS steel structures non-destructive test.
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