玻璃纤维片材非破坏试验的控制方法试验研究  

EXPERIMENTAL RESEARCH ON CONTROL METHOD OF GFRP WITH THE NON-FAILURE TEST

作　　者：杨勇新[1] 余建伟[1,2] 贾彬[2] 赵进阶[1] 李彪[1] 廉杰[1] 郭奥 YANG Yongxin;YU Jianwei;JIA Bin;ZHAO Jinjie;LI Biao;LIAN Jie;GUO Ao(Central Research Institute of Building and Construction Co. Ltd, MCC Group, Beijing 100088, China;Southwest University of Science and Technology, Mianyang 621010, China)

机构地区：[1]中冶建筑研究总院有限公司,北京100088 [2]西南科技大学,四川绵阳621010

出　　处：《工业建筑》2018年第3期41-45,36,共6页Industrial Construction

基　　金：国家自然科学基金面上项目(51678579)

摘　　要：采用控制力值和控制变形值的方法,在7个试件的破坏性测试基础上,共完成了96次玻璃纤维片材试件的非破坏性拉伸测试。其力的控制水平分别为破坏试件极限拉力的15%,20%,30%,40%,变形的控制水平分别为破坏试件极限变形的15%,20%,30%,40%。结果表明：不同控制方式下,测试精度不同,试件损伤程度不同,在相同控制水平时,采用力控制得到的试验结果离散程度较变形控制小。控制水平大于40%时,试件将产生较大的损伤,小于40%的控制水平时,各试件均能够完成既定拉伸试验而不受损伤。这种测试方法为纤维增强复合材料耐久性研究中的非破坏性试验提供工程依据。Based on 7 GFRP specimens tested with the failure test method,96 times of non-failure tensile tests were conducted on GFRP specimens by force-control method and deformation-control method. The control levels of the force were respectively 15% ,20% ,30% ,40% of the ultimate tensile force of the specimens,and the control levels of the deformation were respectively 15% ,20% ,30% ,40% of the ultimate deformation of the specimens.It was founded that the control precisions and damage degrees were different in different control methods. The dispersion degree of the results with the force-control was less than the deformation-control＇s at the same control level. There was a large amount of damage on the specimens when the control level was more than 40% ,while the non-failure tests for the specimens were completed without damage when the control level was less than 40% . As a consequence,the research could provide references for the use of non-failure test method in the durability study of FRP.

关 键 词：玻璃纤维片材 非破坏性试验方法 控制方式 控制水平 拉伸弹性模量 

分 类 号：TU50[建筑科学—建筑技术科学]