玻璃钢/复合材料Issue(5)：22-27,6.
碳纤维编织复合材料损伤变形与破坏实验研究
EXPERIMENTAL STUDY ON DEFORMATION AND FAILURE OF CARBON FIBER BRAIDED COMPOSITE
摘要
Abstract
The damage evolution of carbon fiber braided composites was studied by using the acoustic emission (AE) and digital image correlation (DIC) method.The relationship between mechanical loading,deformation and strain field and acoustic emission characteristic parameters of carbon fiber braided composites was analyzed by collecting acoustic emission signals and damage deformation field information during tensile test.The results show that the displacement,strain field and the AE signal characteristic parameters of the composites can describe the damage accumulation and failure process of the composites during tensile test.The tensile process is divided into two stages:damage accumulation stage and damage stage.In the early stage of loading,low amplitude signals with the amplitude from 40 to 60 dB are generated.As the load increases,the number of cumulative hits increases dramatically,and high-amplitude,high-duration-time signal means that a variety of damages occur at the same time in damage stage.In addition,it is found that the displacement and the maximum tensile strain increase and then decrease in the same load increment measured by DIC.关键词
碳纤维编织复合材料/声发射/数字图像相关/损伤演化Key words
carbon fiber braided composite/acoustic emission/digital image correlation/damage evolution分类
通用工业技术引用本文复制引用
卢博远,赵静,韦子辉,周伟..碳纤维编织复合材料损伤变形与破坏实验研究[J].玻璃钢/复合材料,2017,(5):22-27,6.基金项目
国家自然科学基金(11502064) （11502064）
河北省自然科学基金(E2016201019,F2015201215) （E2016201019,F2015201215）
