航空材料学报2012，Vol.32Issue(3)：79-84,6.DOI:10.3969/j.issn.1005-5053.2012.3.014
蠕变载荷下有机玻璃银纹萌生及损伤研究
Experimental Study on Crazing Initiation and Damage in PMMA under Creep
摘要
Abstract
A series of creep experiments are carried out for MDYB-3 PMMA under different stresses at the room temperature. The whole process from the crazing initiation and growth lo specimens fracture under creep is researched, finding out that the crazing in PMMA present the alternating distribution of sparse and dense ,which is perpendicular to the load. Based on the experimental data and a-nalysis, a relationship between stress and the time of the crazing initiation is given, which quantifies the crazing initiation time shortened non-linear as the stress increases. And a model is built to describe the crazing damage density with stress and time for MDYB-3 PMMA using of non-linear fitting based on hyperbolic function.关键词
有机玻璃/蠕变/银纹萌生/银纹损伤Key words
PMMA/ creep/ crazing initiation/ crazing damage分类
通用工业技术引用本文复制引用
吴国夫,朱西平,高宗战,岳珠峰..蠕变载荷下有机玻璃银纹萌生及损伤研究[J].航空材料学报,2012,32(3):79-84,6.基金项目
西北工业大学基础研究基金(g9ky100602),高等学校学科创新引智计划项目(B07050),航空基金(2010ZA53013) （g9ky100602）
