Experimental assessment of the fatigue strength of corroded bridge wires using non-contact mapping techniques
Experimental assessment of the fatigue strength of corroded bridge wires using non-contact mapping techniques
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DOI：
10.1016/j.corsci.2020.109047
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发表时间：
2021
影响因子：
8.3
通讯作者：
K. Miyachi;M. Chryssanthopoulos;Shunichi Nakamura
中科院分区：
文献类型：
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作者：
K. Miyachi;M. Chryssanthopoulos;Shunichi Nakamura
本研究通过非接触式表面测绘和恒幅加载下的疲劳试验，提供腐蚀效应的特征，研究腐蚀桥梁导线的疲劳性能。对于所研究的腐蚀水平，发现腐蚀导线的断裂位置与最大面积损失的关系比坑深的关系更好。利用未腐蚀导线的测试结果，确定了该导线组和本研究中创建的腐蚀导线组的S-N关系。通过估计平均值和设计S-N曲线的系数来量化腐蚀的影响。
This study investigates the fatigue performance of corroded bridge wires by providing characterisation of the corrosion effects through non-contact surface mapping and by undertaking fatigue tests under constant amplitude loading. For the corrosion level investigated, the breakage position in corroded wires was found to be better correlated with maximum area loss rather than pit depth. Using also test results for un-corroded wires, S-N relationships were determined for both that set and the corroded wire set created in this study. The effect of corrosion was quantified through the estimation of the coefficients for both the mean and the design S-N curves.