Fatigue cracking detection in steel bridge girders through a self-powered sensing concept

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• 作者：Amir H. Alavi ; ^{alavi@msu.edu} ; ^{ah_alavi@hotmail.com} ; Hassene Hasni ; Pengcheng Jiao ; Wassim Borchani ; Nizar Lajnef
• 关键词：Distortion-induced fatigue cracking ; Welded steel bridges ; Self-powered sensor ; Probability density function ; Data fusion ; Damage detection
• 刊名：Journal of Constructional Steel Research
• 出版年：2017
• 出版时间：January 2017
• 年：2017
• 卷：128
• 期：Complete
• 页码：19-38
• 全文大小：5227 K
• 卷排序：128

文摘

A new approach is presented for detection of distortion-induced fatigue cracking of steel bridge girders. The approach is based on the interpretation of the data provided by self-powered sensors. 3D finite element models are developed to obtain the structural response of the girder. The fatigue life of the girder is determined based on J-integral concept and Paris Law. The proposed method is capable of detecting different damage progression states.