The crack propagation rate of pipes was mainly dependent on FATT "of pipeline steel, and FATI" can be measured by dropweightteartest.
介绍了管道裂纹的扩展速度主要取决于管道钢的转变温度FATT, FATT可由落锤撕裂试验测定。
2
The method and standard of dropweightteartest were described. It was also discussed how to evaluate the capability of pipeline steel to transit from toughness to fracture by DWTT.
论述了落锤撕裂试验的方法和标准,并对用DWTT来评定管材及其焊接接头的韧脆转化能力进行了探讨。
3
The delamination crack and its effect on the fracture of pipeline steel were investigated by drop-weightteartest(DWTT)at different temperature and micrograph analysis.