摘要
对纤维铺设方向为0°,90°,±45°的玻璃钢试件进行拉伸和弯曲过程中的声发射在线监测试验。结果表明:纤维铺层角度是决定玻璃钢力学特性和损伤规律的主要因素,拉伸、弯曲力与幅度灰色关联度均可达0.861以上,可依据信号的幅值等参数判断试件的不同损伤阶段;试件损伤产生的4种典型声发射信号在波形及频谱上存在明显差别。
The acoustic emission（AE）on-line monitoring tests of glass fiber reinforced plastic（FRP）specimens with fiber orientation of 0°,90°and ±45°were carried out during tensile and bending mechanical damage.The results show that the fiber ply angle is the main factor for determing the mechanical properties and damage rules of FRP.The degree of grey relation between tensile force or bending force and amplitude can reach over 0.861.The signal amplitude and other parameters are used to judge the different damage stages of the specimen.There are obvious differences in waveform and spectrum between four typical AE signals produced by specimen damage.
作者
商玉梅
陈健飞
江文军
柳言国
杨勇
随亚宾
周先军
SHANG Yumei1 , CHEN Jianfei2 , JIANG Wenjun2 , LIU Yanguo2 , YANG Yong2 , SUI Yabin3 , ZHOU Xianjun3(1.Shengli College China University of Petroleum, Dongying 257000, China; 2.Sinopec Shengli Oilfield Branch Technology Testing Center, Dongying 257000, China; 3.College of Mechanical and Electronic Engineering, China University of Petroleum, Qingdao 266580, Chin)
出处
《无损检测》
2018年第3期24-28,共5页
Nondestructive Testing
基金
中国石油大学(华东)自主创新科研计划
中央高校基本科研业务费专项资金资助项目(16CX02064A)
2015年中国石油大学胜利学院科技计划资助项目(KY2015023)
关键词
玻璃钢
声发射
灰色关联度
频谱
损伤
FRP
acoustic emission
grey correlation degree
frequency spectrum
damage
