The delamination crack and its effect on the fracture of pipeline steel were investigated by drop-weight tear test(DWTT)at different temperature and micrograph analysis.
通过对管线钢不同温度的落锤撕裂试验和微观断口分析，研究了DWTT试样断口的分层裂纹及其对断裂的影响。
It was indicated that the delamination cracking is caused by the effect of 3d stress on the weak interfaces during deformation and appears before beginning or acceleration of main crack.
结果表明，分层裂纹是受力变形时管线钢内部的薄弱界面受到三维应力作用的结果。
In this paper, a modified VCCT (Virtual Crack Close Technology) is developed to compute strain energy release rates of tire belt (a kind of composite structure) under different delamination lengths.
提出一种改进的虚裂纹闭合技术(VCCT)对轮胎带束(一种复合材料结构)不同脱层长度下的应变能释放率进行了计算。
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