Hardness-Based Non-destructive Method for Developing Location Specific S-N Curves for Fatigue Life Evaluation

作     者：Chaminda S. Bandara Sudath C. Siriwardane Udaya I. Dissanayake Ranjith Dissanayake 

作者机构：Department of Civil Engineering University of Peradeniya Peradeniya 20400 Sri Lanka Department of Mechanical and Structural Engineering and Material Science Faculty of Science and Technology University ofStavanger Stavanger N-4036 Norway 

出 版 物：《Journal of Civil Engineering and Architecture》 (土木工程与建筑（英文版）)

年 卷 期：2016年第10卷第2期

页      面：183-191页

学科分类：08[工学] 081304[工学-建筑技术科学] 0805[工学-材料科学与工程（可授工学、理学学位）] 080502[工学-材料学] 0813[工学-建筑学] 

主　　题：S-N曲线 硬度测试 结构疲劳 非破坏性方法 位置 寿命评估 经验公式 非破坏性试验 

摘      要：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.