| 任伟新.35CrMo合金钢疲劳短裂纹扩展规律的试验研究[J].实验力学,1993,8(2): |
| 35CrMo合金钢疲劳短裂纹扩展规律的试验研究 |
| The Growth of Short Crack under Fatigue Test |
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| DOI： |
| 中文关键词: 裂纹扩展速率 应变疲劳 合金钢 |
| 英文关键词:short crack,fatigue crack growth rate,strain fatigue,local stress-strain method. |
| 基金项目: |
| 任伟新 |
| 长沙铁道学院 长沙，410075 |
| 摘要点击次数: 362 |
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| 中文摘要: |
| 本文通过试验研究了35CrMo 合金钢三点弯曲试样疲劳短裂纹的扩展特性;用电测法得到了裂尖处的载荷—应变标定关系。试验结果表明,短裂纹的扩展速率正比于局部应力幅的幂次和裂纹长度,即 da/dN=A(?),可以较好地描述疲劳短裂纹的扩展规律。 |
| 英文摘要: |
| The growth of short crack in 3-point bending specimen made of 35CrMo alloy steel due to fatigue is studied.The load-strain relationship at crack tip is obtained through electric strain gauge measurement.The results show that the growth rate of short crack |
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