| 断裂力学在转化管剩余寿命预测中的应用 |
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| 引用本文： | 朱世杰,李雪辉.断裂力学在转化管剩余寿命预测中的应用[J].大连理工大学学报,1989,29(6):657-661. |
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| 作者姓名： | 朱世杰 李雪辉 |
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| 作者单位： | 大连理工大学材料工程系
(朱世杰，李雪辉，徐善国)，大连理工大学材料工程系(王富岗) |
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| 摘 要： | 在８３０～１０００°Ｃ温度和３．３～７．８ ＭＰａｍ初始应力强度因子下研究了运 行８１ ０００ ｈ的ＨＫ ４０转化管的蠕变裂纹扩展行为，由裂纹扩展速率与温度的Ａｒｒｈｅｎｉｕｓ 关系和裂纹扩展速率与断裂时间的反比关系导出Ｌａｒｓｏｎ－Ｍｉｌｌｅｒ参数（Ｐ），从而建立 了初始应力强度因子（Ｋｒｒ）和 Ｌａｒｓｏｎ－Ｍｉｌｌｅｒ参数关系外推寿命的方法．
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| 关 键 词： | 断裂力学 转化管 寿命 蠕变 裂纹 |
Application of Fracture Mechanics to Prediction of Residual Life of Reformer Tube |
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| Zhu Shijie,Li Xuehui,Xu Shanguo,Wang Fugang.Application of Fracture Mechanics to Prediction of Residual Life of Reformer Tube[J].Journal of Dalian University of Technology,1989,29(6):657-661. |
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| Authors: | Zhu Shijie Li Xuehui Xu Shanguo Wang Fugang |
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| Abstract: | The creep crack growth behavior of HK40 reformer tube that has serviced for 81 000 hours has been studied in the temperature range of 830 to 1 000 C and in the initial stress intensity factor range of 3.3 to 7.8 MP.am1/2. According to the Arrhenius relation of crack growth rate with temperature and the inversely proportional relation of crack growth rate with rupture time, Larson-Miller parameter is derived. A method ext-roplating residual life by the relation of initial stress intensity factor with Larson-Miller parameter(P) is propose. |
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| Keywords: | fracture mechanics creep cracks life/reformer tube |
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