| 断口反推疲劳应力的新进展 |
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| 引用本文： | 陶春虎,习年生,张卫方,谢明立.断口反推疲劳应力的新进展[J].航空材料学报,2000,20(3):158-163. |
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| 作者姓名： | 陶春虎 习年生 张卫方 谢明立 |
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| 作者单位： | 中国航空工业失效分析中心,北京,100095 |
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| 基金项目： | 科技部科研项目，G1999065004， |
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| 摘 要： | 回顾了利用临界裂纹长度ac和瞬断区面积A确定疲劳应力的应用及问题,介绍了利用疲劳间距反推疲劳应力的基本原理、方法及其工程应用.结果表明,利用疲劳条带宽度反推疲劳应力的误差可控制在15%以下.裂纹扩展速率的测量误差对Δσ反推计算结果影响不大.
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| 关 键 词： | 断口反推 疲劳条带 疲劳应力 |
| 修稿时间： | 2000-06-04 |
Resent development of fractographic restrostimation on determining fatigue stress |
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| TAO Chun-hu,XI Nian-sheng,ZHANG Wei-fang,XIE Ming-li.Resent development of fractographic restrostimation on determining fatigue stress[J].Journal of Aeronautical Materials,2000,20(3):158-163. |
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| Authors: | TAO Chun-hu XI Nian-sheng ZHANG Wei-fang XIE Ming-li |
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| Abstract: | Application and disadvantages of determining fatigue stress by means of the threshold crack length (a c) and fast spread area (A) were reviewed. The basic principle, method and engineer application of restrostimating fatigue stress by fatigue striation were introduced. The results show that the error of restrostimated fatigue stress in virtue of fatigue striation can be controlled less than 15%. And the measurement error of fatigue crack propagation rate has little effect on the calculation result. |
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| Keywords: | fractographic restrostimation fatigue striation fatigue str\ |
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