复合材料波纹褶皱区域损伤变形测量及声发射监测

玻璃钢/复合材料 ›› 2017, Vol. 0 ›› Issue (8): 53-60.

复合材料波纹褶皱区域损伤变形测量及声发射监测

赵文政¹, 张燕南¹, 雒新宇², 庞艳荣^1*

1.河北大学无损检测研究所,保定071002;
2.承德石油高等专科学校资产与后勤管理处,承德067000

收稿日期:2017-02-16 出版日期:2017-08-28 发布日期:2017-08-28
通讯作者: 庞艳荣(1963-),女,教授,主要从事无损检测技术及电气工程方面的研究。
作者简介:赵文政(1994-),男,硕士研究生,主要从事复合材料声学与光学无损检测技术方面的研究。
基金资助:
河北省教育厅重点项目(ZD2016097);河北省自然科学基金(F2015201215);河北大学校级项目(799207217089)

DAMAGE DEFORMATION MEASUREMENT AND ACOUSTIC EMISSION MONITORING OF WAVES IN COMPOSITE MATERIALS

ZHAO Wen-zheng¹, ZHANG Yan-nan¹, LUO Xin-yu², Pang Yan-rong^1*

1.Non-destructive Testing Laboratory, Hebei University, Baoding 071002, China;
2.Assets and Logistics Administration Section, Chengde Petroleum College, Chengde 067000, China

Received:2017-02-16 Online:2017-08-28 Published:2017-08-28

摘要/Abstract

摘要： 对含波纹褶皱缺陷的玻璃纤维单向复合材料进行压缩试验,结合声发射(Acoustic Emission,简称“AE”)和数字图像相关(Digital Image Correlation,简称“DIC”)互补技术,研究复合材料波纹褶皱区域的损伤变形与演化规律。在复合材料试件压缩加载的过程中,采集波纹褶皱区域损伤变形场、应变场信息和实时声发射监测信号,分析复合材料压缩力学响应行为与缺陷区域变形场、应变场以及声发射信号特征之间的对应关系。结果表明:波纹褶皱会严重影响复合材料的力学性能,通过分析声发射信号,发现随着波纹褶皱宽高比减小,复合材料的力学性能呈现降低的趋势;当波纹褶皱宽高比一定时,随着波纹褶皱高度不断增加,复合材料的力学性能呈现降低的趋势。通过DIC测得的应变场与位移场信息,发现对于相同的载荷增量,最大应变呈增加趋势,且波纹褶皱宽高比越大应变增幅越大;越趋近于褶皱中部,水平位移越大,加载方向位移与试件失稳破坏位置有关,接近破坏区域的加载方向位移大。损伤区域位移场和应变场清晰地反映了玻璃纤维复合材料的损伤变形特征。

关键词: 复合材料, 波纹褶皱, 声发射, 数字图像相关

Abstract: In the compression tests of glass fiber composite materials which have waves, the damage evolution of glass fiber composites was studied by using the acoustic emission (AE) and digital image correlation (DIC) method. The relationship between compressive mechanical response behavior of composite materials and damage deformation field information or acoustic emission characteristic parameters was analyzed by collecting acoustic emission signals and damage deformation field information during compression test. The results show that waves have serious influence to mechanical property of composite materials. By analyzing acoustic emission signals, it is found that, as waves' ratio of width and height decrease, mechanical property of composite materials becomes worse; and in the same ratio of width and height, as waves' height increase, mechanical property of composite materials is worse. By analyzing strain field and displacement field from DIC, it is found that, in the same load increment, the maximum strain increase and the composite materials which have a wave with higher ratio of width and height have a larger increment of maximum strain. The place which is close to the middle of composite materials has a larger horizontal displacement. However, loading direction displacement is related to creak. The place which is close to creak has a larger loading direction displacement. It reflects clearly damage and deformation characteristic of composite materials by using displacement field and strain field.

Key words: composite materials, waves, acoustic emission, digital image correlation

中图分类号:

TB332

赵文政, 张燕南, 雒新宇, 庞艳荣. 复合材料波纹褶皱区域损伤变形测量及声发射监测[J]. 玻璃钢/复合材料, 2017, 0(8): 53-60.

ZHAO Wen-zheng, ZHANG Yan-nan, LUO Xin-yu, Pang Yan-rong. DAMAGE DEFORMATION MEASUREMENT AND ACOUSTIC EMISSION MONITORING OF WAVES IN COMPOSITE MATERIALS[J]. Fiber Reinforced Plastics/Composites, 2017, 0(8): 53-60.

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