Failure Analysis of Shipping Container Handler Twistlock Pin

被引：0
|
作者：
M. V. Kral
A. L. Beardsley
N. J. Breeuwer
机构：
[1] University of Canterbury,Department of Mechanical Engineering
来源：
Journal of Failure Analysis and Prevention | 2020年 / 20卷
关键词：
Alloy steel; Brittle fracture; Quench cracking; Fracture mechanics; Manufacturing defects; Cleavage;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
During operation of a shipping container handler, a twistlock pin supporting one side of two stacked shipping containers fractured, causing the shipping containers to fall. An investigation revealed that the alloy steel pin had a ferritic/bainitic microstructure with an average hardness of 29.5 HRC and a typical Charpy V-notch impact energy of 17 J at room temperature. Examination of the fracture surface revealed a cleavage fracture that initiated from a quench crack. It was determined that the primary cause of the failure was improper heat treatment.
引用
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页码：641 / 646
页数：5
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