ANALYSIS OF THE THERMAL FATIGUE CRACKING OF 316L MODEL PIPE COMPONENTS UNDER CYCLIC DOWN-SHOCKS

机译：316L模型管道零件在向下循环中的热疲劳开裂分析

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Cylindrical test pieces of low-carbon austenitic steel 316L are subjected to cyclic thermal loads in a specially designed rig. Intermittent stops allowed measurement of cycles to initiation and of the propagation of the networks of axial and circumferential cracks. These results have been used to validate an analysis procedure, based on a sequentially coupled thermal-stress finite element analysis. It is found that the initiation life can be reliably predicted from the stain range at the inner surface, while a simplified semi-elliptical crack model best described the subsequent crack growth.

机译：低碳奥氏体钢316L的圆柱形试件在专门设计的钻机中承受循环热负荷。间歇性停止可以测量开始的周期以及轴向和周向裂纹网络的传播。这些结果已用于基于顺序耦合的热应力有限元分析来验证分析程序。发现可以从内表面的污渍范围可靠地预测起爆寿命，而简化的半椭圆形裂纹模型可以最好地描述随后的裂纹扩展。

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来源
《ASME(American Society of Mechanical Engineers) Pressure Vessels and Piping Conference vol.3: Design and Analysis; 20050717-21; Denver,CO(US)》|2005年|P.539-545|共7页
会议地点 DenverCO(US)
作者
Elena Paffumi; Karl-Fredrik Nilsson; Nigel Taylor;
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Institute for Energy, Joint Research Centre, P.O. Box 2, 1755 ZG Petten, The Netherlands;

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原文格式 PDF
正文语种 eng
中图分类压力容器;
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4. ANALYSIS OF THE THERMAL FATIGUE CRACKING OF 316L MODEL PIPE COMPONENTS UNDER CYCLIC DOWN-SHOCKS [C] . Elena Paffumi, Karl-Fredrik Nilsson, Nigel Taylor ASME Pressure Vessels and Piping Conference . 2005

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ANALYSIS OF THE THERMAL FATIGUE CRACKING OF 316L MODEL PIPE COMPONENTS UNDER CYCLIC DOWN-SHOCKS

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