玻璃钢/复合材料Issue(8)：25-29,5.
四点弯曲载荷作用下复合材料分层演化行为探索
EXPERIMENTAL STUDY FOR EVOLUTION BEHAVIOR OF COMPOSITE MATERIALS WITH DELAMINATION DEFECT BY FOUR-POINT BENDING
摘要
Abstract
In order to investigate the effects of stratified evolution and delamination on the load capacity and service life of the composite materials under the four-point bending load,the artificial tectonic defects of the different positions were set up.The four-point bending test was carried out,the whole process was recorded by acoustic emission,and the degree of damage for the composite material was judged by the collision accumulationtime-amplitude history diagram,load-time-relative energy history diagram,acoustic emission impact signal location diagram and so on.The results show that the stratification defects near the surface of the specimen accelerate the process of material failure and expansion.The location of the delamination defect changes the bending performance of the composites to a great extent.The closer the stratification defects are to the surface of the specimen,the greater the damage,the worse the service capacity of the specimen.关键词
复合材料/分层损伤/四点弯曲/声发射Key words
composite/delamination damage/four-point bending/acoustic emission分类
通用工业技术引用本文复制引用
郝敏娟,谢中朋,岳忠..四点弯曲载荷作用下复合材料分层演化行为探索[J].玻璃钢/复合材料,2017,(8):25-29,5.基金项目
首都经济贸易大学教育教学改革立项项目 （）
