| PMMA应力银纹损伤的实验研究 |
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| 引用本文： | 李倩妹,罗文波,刘文娴.PMMA应力银纹损伤的实验研究[J].湖南工程学院学报(自然科学版),2006,16(3):42-45. |
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| 作者姓名： | 李倩妹 罗文波 刘文娴 |
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| 作者单位： | 湘潭大学,基础力学与材料工程研究所,湖南,湘潭,411105;湘潭大学,基础力学与材料工程研究所,湖南,湘潭,411105;湘潭大学,基础力学与材料工程研究所,湖南,湘潭,411105 |
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| 摘 要： | 实验采用显微镜对PMMA———有机玻璃的变截面试件在不同时间的蠕变条件下的银纹损伤进行实验后观测,将银纹所占的面积和所取图象视场占的总面积的比值视为银纹密度D,通过对银纹密度的测量得到银纹损伤随时间和应力的变化规律.
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| 关 键 词： | 高聚物 银纹 损伤 银纹面密度 |
| 文章编号： | 1671-119X(2006)03-0042-04 |
| 收稿时间： | 03 20 2006 12:00AM |
| 修稿时间： | 2006年3月20日 |
Experimental Studies on Crazing Damage in Stressed PMMA |
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| LI Qian-mei,LUO Wen-bo,LIU Wen-xian.Experimental Studies on Crazing Damage in Stressed PMMA[J].Journal of Hunan Institute of Engineering(Natural Science Edition),2006,16(3):42-45. |
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| Authors: | LI Qian-mei LUO Wen-bo LIU Wen-xian |
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| Institution: | Institute of Fundamental Mechanics and Material Engineering, Xiangtan University, Xiangtan 411105, China |
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| Abstract: | This paper presents an optical technique to quantify the creep crazing damage in stressed transparent glassy polymeric sheet of PMMA.Craze area density in this article is defined by ratio of crazing area and the overall area of the region selected.The specimens are loaded for a defined period of time under creep condition with defined temperature,after which the craze densities are measured with an optical microscope.Finally,this paper aims to find out the relation among craze area density and stress and time. |
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| Keywords: | polymer craze damage craze area density |
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