摘要
为研究声发射技术在GFRP胶栓混接节点试验测试中的适用性,开展了拉伸和剪切两种工况下的单搭接板节点静力破坏试验,并对声发射特征参数进行了分析。研究表明:声发射特征能很好地反映GFRP胶栓混接节点的破坏规律,识别出节点的破坏过程分为胶层损伤平稳发展、胶层损伤快速发展、FRP损伤平稳发展、FRP损伤快速发展四个阶段,且声发射结果与荷载-位移曲线的变化规律相吻合,但难以实现对GFRP板件内部破坏区域的定位。成果可为声发射技术在类似结构试验中的应用提供参考。
In order to study the applicability of acoustic emission technology in the test of GFRP adhesive bolted hybrid joints,the static failure tests of single lap plate joints under tensile and shear conditions were carried out,and the characteristic parameters of acoustic emission were analyzed.The results show that the acoustic emission characteristics can well reflect the failure law of GFRP adhesive bolted hybrid joints.The failure process of joints can be divided into four stages:Steady development of adhesive layer damage,rapid development of adhesive layer damage,steady development of FRP damage and rapid development of FRP damage,and the acoustic emission results are consistent with the change law of load displacement curves.However,it is difficult to locate the internal failure area of GFRP plates.The results provide a reference for the application of acoustic emission technology in similar structural tests.
作者
李思达
王进潇
程斌
LI Si-da;WANG Jin-xiao;CHENG Bin(School of Naval Architecture,Ocean and Civil Engineering,Shanghai Jiao Tong University,Shanghai 200240,China)
出处
《复合材料科学与工程》
CAS
北大核心
2022年第9期69-75,共7页
Composites Science and Engineering
基金
国家自然科学基金(51978400)。
关键词
声发射技术
GFRP胶栓混接节点
静力试验
acoustic emission technology
GFRP adhesive bolt hybrid joint
static test
