碳纤维复合材料拉伸损伤声发射信号MC-ApEn分析

PDF(1800 KB)

振动与冲击 ›› 2014, Vol. 33 ›› Issue (14) : 132-136.

论文

碳纤维复合材料拉伸损伤声发射信号MC-ApEn分析

黄频波1，丁鹏2，李斌1，吴悦梅1，王新玲1

作者信息 +

MC- ApEn analysis of acoustic emission signals for carbon fiber composite materials in tensile damage

HUANG Pin-bo1，DING Peng2，LI Bin1，WU Yue-mei1，WANG Xin-ling1

Author information +

文章历史 +

摘要

采用滑动移除近似熵(MC-ApEn)分析碳纤维环氧树脂复合材料拉伸损伤过程中产生的声发射信号。从信号的无序性、复杂性及动力学平衡角度描述基体开裂、纤维/基体脱胶及纤维断裂三种典型声发射信号的近似熵谱特征并给出相应解释。用MC-ApEn分析载荷、计数、声发射能量与时间的相关曲线。由不同趋势间过渡引起的近似熵突变发现，拉伸断裂过程被两结构突变时间点划分为三个不同阶段，并据其演进特点推荐复合材料拉伸失效的临界载荷。

Abstract

Acoustic emission signals for carbon fiber composite materials in tensile damage is analyzed by moving cut data approximate entropy(MC-ApEn). Based on disorder and complexity of AE signals and dynamics equilibrium, the paper describes and explains their approximate entropy spectrum characteristics of matrix cracking, fiber/matrix debonding, fiber breaking. In addition, the time correlation curves for AE energy, counts and load are also investigated by MC-ApEn. Because different trends in transition will cause APEn mutation, the results show tensile fracture process of CFPR is divided into three different stages by two structure point and according to the evolution features of stages, the critical load of tensile failure for composite materials is recommend.

导出引用

黄频波;丁鹏;李斌;吴悦梅;王新玲. 碳纤维复合材料拉伸损伤声发射信号MC-ApEn分析[J]. 振动与冲击, 2014, 33(14): 132-136

HUANG Pin-bo;DING Peng;LI Bin;WU Yue-mei;WANG Xin-ling. MC- ApEn analysis of acoustic emission signals for carbon fiber composite materials in tensile damage[J]. Journal of Vibration and Shock, 2014, 33(14): 132-136