摘要
首次将激光散斑计量术应用到具有大变形,粘弹性的高分子材料——聚乙烯的力学破坏行为研究中。对单边开裂纹的试件,用散斑计量术精确地测量裂纹尖端感兴趣点的位移,方便地得出裂纹张开位移随载荷变化曲线,并对裂纹尖端的位移场作了全场分析。为高分子材料的宏观破坏研究提供了一个新的有效手段。
For the first time laser speckle metrology is applied to research on fracture behavior of HDPE. To the specimen with single edge crack, interesting displacement of points around the tip of crack is accurately measured. It is convenient to get loading-displacement opening crack curve and displacement distribution around the tip of crack, simultaneously to get full-field displacement with Fourier transfer. So laser speckle metrology provides a new way for studying the fracture behavior of polymer material.
出处
《北京化工大学学报（自然科学版）》
CAS
CSCD
北大核心
1989年第4期56-62,共7页
Journal of Beijing University of Chemical Technology(Natural Science Edition)
基金
国家自然科学基金
关键词
散斑法
断开
高密度聚乙烯
激光
激光散斑计量术
speckle method, fractures, high-density polyethylene(HDpE), laser, laser speckle metrology.
