基于声发射技术的三维编织复合材料低速冲击损伤分析

实验研究了不同编织工艺参数的三维六向碳/环氧编织复合材料在不同冲击能量作用下的低速冲击过程.测试过程中用声发射技术进行实时监测,分析了声发射能量,幅值和波形经过快速傅里叶变换后的峰值频率,并对典型信号的波形进行了频谱分析.结果表明AE参数能很好地描述三维编织复合材料的低速冲击损伤过程....

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Bibliographic Details
Published in材料工程 no. 7; pp. 92 - 97
Main Author 严实 赵金阳 陆夏美 曾涛
Format Journal Article
LanguageChinese
Published 哈尔滨理工大学 建筑工程学院,哈尔滨,150080 2014
Subjects
三维六向
低速冲击
声发射
损伤
编织复合材料
三维六向
damage
braided composite
3D six-directional
low-velocity impact
损伤
声发射
acoustic emission
低速冲击
编织复合材料
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Summary:实验研究了不同编织工艺参数的三维六向碳/环氧编织复合材料在不同冲击能量作用下的低速冲击过程.测试过程中用声发射技术进行实时监测,分析了声发射能量,幅值和波形经过快速傅里叶变换后的峰值频率,并对典型信号的波形进行了频谱分析.结果表明AE参数能很好地描述三维编织复合材料的低速冲击损伤过程.
Bibliography:11-1800/TB
The damage process of 3D six-directional carbon/epoxy braided composites with differentbraiding technological parameter under the low-velocity impact was investigated. The test procedurewas monitored by the acoustic emission （AE） technique. The AE energy, amplitude and the peak fre-quency of a dominant frequency band after treated with the fast Fourier transform （FFT） were ana-lyzed. And the waveforms of the type signals were discussed by spectral analysis. Results reveal thatthe behavior of AE parameters describes well the damage process on the low-velocity impact behavior.
YAN Shi,ZHAO Jin-yang,LU Xia-mei,ZENG Tao （School of Architecture and Civil Engineering, Harbin University of Science and Technology, Harbin 150080, China）
3D six-directional ; braided composite ; low-velocity impact ; damage ; acoustic emission
ISSN:1001-4381
1001-4381
DOI:10.11868/j.issn.1001-4381.2014.07.017