基于小波分析的复合材料层间损伤声发射行为

复合材料科学与工程 ›› 2014, Vol. 0 ›› Issue (8): 44-48.

基于小波分析的复合材料层间损伤声发射行为

梁晓敏¹, 周伟^1*, 庞艳荣¹, 包正宇²

1.河北大学质量技术监督学院,河北保定 071002;
2.天津水泥工业设计研究院有限公司,天津 300400

收稿日期:2014-04-10 出版日期:2014-08-28 发布日期:2021-09-13
通讯作者: 周伟(1980-),男,博士,副教授,主要从事复合材料力学及无损检测方面的研究,zhouweihy@126.com。
作者简介:梁晓敏(1993-),女。本文作者还有吕智慧¹和韩婧¹。
基金资助:
河北省自然科学基金(E2012201084);国家级大学生创新创业训练计划(201310075013)

ACOUSTIC EMISSION BEHAVIOR ON INTERLAMINAR DAMAGE OF COMPOSITE BASED ON WAVELET ANALYSIS

LIANG Xiao-min¹, ZHOU Wei^1*, PANG Yan-rong¹, BAO Zheng-yu²

1. College of Quality and Technology Supervision, Hebei University, Baoding 071002, China;
2. Tianjin Cement Industry Design & Research Institute Co., Ltd., Tianjin 300400, China

Received:2014-04-10 Online:2014-08-28 Published:2021-09-13

摘要/Abstract

摘要： 通过实时监测含分层复合材料加载破坏下缺陷演化的声发射信号,应用VBScript将波形数据串联成数据流进行分析,获取复合材料层间破坏的声发射响应特征。结果表明,复合材料Ⅰ型层间开裂过程中伴随有纤维损伤,而Ⅱ型只有基体开裂,从而导致Ⅰ型、Ⅱ型分层扩展过程中的声发射能量有很大差异;频谱分布图中,Ⅰ型破坏过程出现了两个波峰,两峰所对应的频率值即为树脂和纤维受载破坏的主要频率,Ⅱ型只有一个峰值。可以利用该结论为风电叶片复合材料分层破坏形式的识别提供借鉴。

关键词: 风电叶片, 复合材料, 分层, 声发射, 小波分析

Abstract: Acoustic emission (AE) testing technology was used to monitor defect evolutions of wind turbine blade composite with delamination under loading in real time. In order to obtain the acoustic emission response characteristics of interlaminar failure, the waveform data-flow cascaded by VBScript was analyzed. The results showed that during the interlaminar cracking process of mode Ⅰ the fiber was damaged, but to the mode Ⅱ, only matrix was damaged, which caused great differences of acoustic emission energy between mode Ⅰand mode Ⅱ during the delamination growth. The frequency spectrum of mode Ⅰ has two wave crests, while mode Ⅱ has only one. The frequencies corresponding to the two wave crests were the main frequencies to the damaged resin and fibers. This conclusion can provide a basis for identifying the delamination damage mode of wind turbine blade composite.

Key words: wind turbine blade, composite, delamination, acoustic emission, wavelet analysis

中图分类号:

TB332

梁晓敏, 周伟, 庞艳荣, 包正宇. 基于小波分析的复合材料层间损伤声发射行为[J]. 复合材料科学与工程, 2014, 0(8): 44-48.

LIANG Xiao-min, ZHOU Wei, PANG Yan-rong, BAO Zheng-yu. ACOUSTIC EMISSION BEHAVIOR ON INTERLAMINAR DAMAGE OF COMPOSITE BASED ON WAVELET ANALYSIS[J]. COMPOSITES SCIENCE AND ENGINEERING, 2014, 0(8): 44-48.

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