| 用蠕变内应力预测高温管道残余寿命 |
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| 引用本文： | 忻云彪,王正东,吴东棣.用蠕变内应力预测高温管道残余寿命[J].华东理工大学学报(自然科学版),1992(5). |
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| 作者姓名： | 忻云彪 王正东 吴东棣 |
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| 作者单位： | 华东化工学院化工机械研究所
(忻云彪，王正东)，华东化工学院化工机械研究所(吴东棣) |
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| 摘 要： | 用恒应变速率法测定高温管道蠕变内应力并预测其残余寿命,不管是以蠕变极限为失效准则,还是以持久强度为失效准则,都可获得令人满意的结果;而以蠕变极限为失效准则的蠕变内应力法与常规的以蠕变试验为基础的等温外推法相比,还具有试验时间短的优点。
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| 关 键 词： | 蠕变 蠕变试验 恒应变速率(CSR) 蠕变内应力 残余寿命 高温管道 |
Prediction of Residual Life of High Temperature Piping by Creep Internal Stresses |
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| Xin Yunbiao,Wang Zhengdong and Wu Dongdi.Prediction of Residual Life of High Temperature Piping by Creep Internal Stresses[J].Journal of East China University of Science and Technology,1992(5). |
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| Authors: | Xin Yunbiao Wang Zhengdong and Wu Dongdi |
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| Institution: | Research Institute of Process Equipment and Pressure Vessel |
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| Abstract: | Creep internal stress of high temperature piping measured by constant strain rate (CSR) method has been applied to predicting the residual life of high temperature piping.The results show that the approach to the prediction of residual life can reasonably meet the needs with both the creep limit failure criterion and the rupture life criterion.It is also shown that under the creep limit failure criterion, the creep internal stress method has the advantage of less test time in comparison with the isothermal extrapolation method based on conventional creep tests. |
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| Keywords: | creep creep test constant strain rate(CSR) creep internal stress residual life high temperature piping |
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