| 玻璃动疲劳性能研究 |
| |
| 引用本文： | 丁成忠,沈大荣.玻璃动疲劳性能研究[J].武汉理工大学学报,1992(3). |
| |
| 作者姓名： | 丁成忠 沈大荣 |
| |
| 作者单位： | 武汉工业大学工程力学系
(丁成忠)，武汉工业大学工程力学系(沈大荣) |
| |
| 基金项目： | 国家建材局行业基金科研成果. |
| |
| 摘 要： | 本文通过四荷载V氏压痕玻璃方板,在空气中利用四种加载速率的同轴双环弯曲动疲劳试验,发现玻璃强度与加载速率成正比例关系,并得出结论:高强度区的破坏是由尖裂纹萌生造成的;低强度区的破坏是由亚临界裂纹扩展所致。根据试验结果,利用自编的多项式曲线拟合程序,求得破坏荷载及破坏时间的Weibull分布模数m。利用动疲劳强度与加载速率的关系,求得裂纹扩展参数n,并评价了玻璃使用的可靠性问题。
|
| 关 键 词： | 玻璃 动疲劳 Weibull分布 |
Research on the Dynamic Fatigue Performance of Glass |
| |
| Ding Chengzhong,Shen Darong Dept. of Engineering Mechanics,Wuhan University of Technology.Research on the Dynamic Fatigue Performance of Glass[J].Journal of Wuhan University of Technology,1992(3). |
| |
| Authors: | Ding Chengzhong Shen Darong Dept of Engineering Mechanics Wuhan University of Technology |
| |
| Abstract: | Glass's strength is found to be in direct proportion of Loading velocity in this paper,from ring-ring flexure glass square plate dynamic fatigue test for four indentation in four loading velocities. The conclusion is gotten as follow: in the high strength regime, faiture is controlled bycrack initiation; in low strength regime, failure is caused by subcritical crack growth. In terms oftesting results, the Weibull distribution module(m) of failure strength and failure time in above con-dition is calculated by using the multionomial curve fitting program. In the light of the relation ofdynamic fatigue strength and loading velocity, the crack growth parameter(n) is calculated. The re-liability of glass using in some conditions is appraised. |
| |
| Keywords: | glass dynamic fatigue Weibull distribution |
| 本文献已被 CNKI 等数据库收录！ |
|
