复合材料胶接修补界面损伤演化声发射监测

玻璃钢/复合材料 ›› 2016, Vol. 0 ›› Issue (7): 9-13.

复合材料胶接修补界面损伤演化声发射监测

陈维业¹, 胡杰¹, 刘光辉², 周伟^1*

1.河北大学质量技术监督学院,保定071002;
2.保定市交通运输局公路设施设备维护处,保定071000

收稿日期:2015-12-28 出版日期:2016-07-28 发布日期:2016-07-28
通讯作者: 周伟(1980-),男,博士,教授,主要从事复合材料实验力学及无损检测方面的研究,zhouweihy@126.com
作者简介:陈维业(1993-),男,主要从事声学无损检测研究。
基金资助:
国家自然科学基金资助项目(11502064);河北大学大学生创业训练计划项目(2015171)

ACOUSTIC EMISSION MONITORING FOR DAMAGE EVOLUTION OF COMPOSITE BONDING REPAIR INTERFACE

CHEN Wei-ye¹, HU Jie¹, LIU Guang-hui², ZHOU Wei^1*

1.College of Quality and Technical Supervision, Hebei University, Baoding 071002, China;
2.Highway Facilities and Equipment Maintenance Department of Baoding Transportation Bureau, Baoding 071000, China

Received:2015-12-28 Online:2016-07-28 Published:2016-07-28

摘要/Abstract

摘要： 利用声发射技术实时监测四点弯曲载荷作用下含纤维断裂玻璃纤维增强复合材料胶接修补后试件的损伤演化过程,结合声发射信号统计分析方法,研究贴补片尺寸对修复效果的影响。结果表明,弯曲载荷作用下,两类贴补修补试件破坏模式均以贴补界面开裂为主,随着胶接修补贴补面积的增加,试件失效载荷呈增大趋势。贴补修补片长度为90mm时,其破坏载荷约为未修补试件破坏载荷的2倍。修补试件损伤破坏过程与对应声发射特征表现出良好的相关性,声发射信号统计性描述方法能够有效用于评估胶接修补复合材料试件的微损伤演化行为。

关键词: 复合材料, 贴补修补, 有限元, 声发射, 统计分析

Abstract: Acoustic emission (AE) testing technology was used to monitor the process of damage evolution of glass fiber reinforced composite specimens with fiber breakage after repaired under four-point bending tests in real time. According to the statistical analysis method of acoustic emission signal, the influences of patch size on the repair effects were investigated. The results show that the failure modes of two kinds of patch specimens are mainly the patch interfacial cracking under bend loading. As the bonding repair area increases, the failure load of specimens increases. Compared with the specimen without defect, double failure load of repaired specimen was obtained when the length of patch is 90 mm. The damage and failure process of adhesive bonded repair specimen shows a good correlation with the corresponding acoustic emission characteristics, and the method of statistical description of acoustic emission signals could be effectively used to evaluate the micro-damage evolution behavior of adhesive bonded composite specimens.

Key words: composite material, patch repair, finite element analysis, acoustic emission, statistic analysis

中图分类号:

TB332

陈维业, 胡杰, 刘光辉, 周伟. 复合材料胶接修补界面损伤演化声发射监测[J]. 玻璃钢/复合材料, 2016, 0(7): 9-13.

CHEN Wei-ye, HU Jie, LIU Guang-hui, ZHOU Wei. ACOUSTIC EMISSION MONITORING FOR DAMAGE EVOLUTION OF COMPOSITE BONDING REPAIR INTERFACE[J]. Fiber Reinforced Plastics/Composites, 2016, 0(7): 9-13.

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