| PMMA银纹损伤实验研究 |
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| 引用本文： | 李之达,易辉,周衍领,张嵘峰,蔡佳骏,刘劲勇.PMMA银纹损伤实验研究[J].湘潭大学自然科学学报,2006,28(3):49-52. |
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| 作者姓名： | 李之达 易辉 周衍领 张嵘峰 蔡佳骏 刘劲勇 |
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| 作者单位： | 1. 华中科技大学力学系,湖北,武汉,430074;武汉理工大学交通学院,湖北,武汉,430063
2. 武汉理工大学交通学院,湖北,武汉,430063 |
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| 基金项目： | 国家自然科学基金资助项目(NSFC-10372074) |
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| 摘 要： | 利用含缺陷流变性物体的材料破坏理论,采用显微技术对高聚物蠕变条件下的银纹损伤引发和演化进行了实时在线的实验研究.通过对损伤变量的定量观测,得到了聚甲基丙烯酸甲酯银纹损伤随时间和应力水平演化的规律,并给出了损伤演化模型.
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| 关 键 词： | 银纹损伤 蠕变 银纹密度 |
| 文章编号： | 1000-5900（2006）03-0049-04 |
| 收稿时间： | 2005-09-19 |
| 修稿时间： | 2005-09-19 |
Experimental Research on Crazing Damage in PMMA |
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| LI Zhi-d,YI Hui,ZHOU Yan-ling,ZHANG Rong-feng,CAI Jia-jun,LIU Jin-yong.Experimental Research on Crazing Damage in PMMA[J].Natural Science Journal of Xiangtan University,2006,28(3):49-52. |
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| Authors: | LI Zhi-d YI Hui ZHOU Yan-ling ZHANG Rong-feng CAI Jia-jun LIU Jin-yong |
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| Institution: | 1. Department of Mechanics, Huazhong Univershy of science and Technology, Wuhan 430074 China; 2. School of Transportation, Wuhan Univershy of Technology, Wuhan 430063 China |
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| Abstract: | In this paper,the damage theory of rheologic material with defect and the microscope technique are used to research the variation of crazing damage under creep condition on line and real time experimentally.By observing the parameter of damage quantification ally,variation of crazing damage with time is available accurately under different stress level.The craze damage evolution equation for PMMA under creep condition is derived theoretically. |
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| Keywords: | crazing damage creep density of craze |
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