基于声发射技术的三维编织复合材料低速冲击损伤分析  

Low-velocity Impact Response of 3D Braided Composites by Acoustic Emission

作　　者：严实[1] 赵金阳[1] 陆夏美[1] 曾涛[1] 

机构地区：[1]哈尔滨理工大学建筑工程学院,哈尔滨150080

出　　处：《材料工程》2014年第7期92-97,共6页Journal of Materials Engineering

基　　金：国家自然科学基金项目(11102055)

摘　　要：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。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.

关 键 词：三维六向 编织复合材料 低速冲击 损伤 声发射 

分 类 号：TB332[一般工业技术—材料科学与工程]