| 含表面裂纹群的PTA加压罐的安全评定 |
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| 引用本文： | 杨振国.含表面裂纹群的PTA加压罐的安全评定[J].合成纤维工业,1995,18(4):37-41. |
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| 作者姓名： | 杨振国 |
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| 作者单位： | 华东理工大学材料科学研究所 |
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| 摘 要： | 以断裂力学为方法，以“合乎使用”为原则，在对ＰＴＡ加压罐进行了外观检验、无损检测、应力分析及材料性能分析后，采用流变应力准则，对其焊缝热影响区附近的表面裂纹群进行了安全评定。评定结果表明，在现有的操作压力水平下，含表面裂纹群的在用加压罐可以继续安全使用，不必进行任何返修。
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| 关 键 词： | 加压罐，表面裂纹，流变应力，安全评定 |
SAFETY ASSESSMENT FOR PTA ACCELERATED PRESSURE VESSEL CONTAINING MULTIPLE SURFACE CRACKS IN SERVICE |
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| Yang Zhenguo.SAFETY ASSESSMENT FOR PTA ACCELERATED PRESSURE VESSEL CONTAINING MULTIPLE SURFACE CRACKS IN SERVICE[J].China Synthetic Fiber Industry,1995,18(4):37-41. |
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| Authors: | Yang Zhenguo |
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| Abstract: | Based on the method of fracture mechanics and the principle of fitness-for-purpose,this paper conducted safe-ty assessment for the multiple surface cracks near the heat influencing region of weld line by means of flowstress criterion through appearance viewing,non-estructive examination,stress analysis and material prop-erties's analysis. The results obtained by safety assessment showed that the vessel with surface cracks in ser-vice could be used safety without any repairment under the level of available operation pressure. |
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| Keywords: | accelerated pressure vessel surface crack flow stress safety assessment |
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