| 35CrMo合金钢疲劳短裂纹扩展规律的试验研究 |
| |
| 引用本文： | 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):174-179. |
| |
| 作者姓名： | 任伟新 |
| |
| 作者单位： | 长沙铁道学院 长沙，410075 |
| |
| 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。
|
| 关 键 词： | 裂纹扩展速率 应变疲劳 合金钢 |
The Growth of Short Crack under Fatigue Test |
| |
| Ren Weixin Changsha Railway Institute.The Growth of Short Crack under Fatigue Test[J].Journal of Experimental Mechanics,1993,8(2):174-179. |
| |
| Authors: | Ren Weixin Changsha Railway Institute |
| |
| Institution: | Ren Weixin Changsha Railway Institute |
| |
| Abstract: | 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 is proportional to crack length and the power of local stress amplitude. |
| |
| Keywords: | short crack fatigue crack growth rate strain fatigue local stress-strain method |
| 本文献已被 CNKI 维普 等数据库收录！ |
| 点击此处可从《实验力学》浏览原始摘要信息 |
| 点击此处可从《实验力学》下载免费的PDF全文 |
