A novel method for damage analysis of CFRP single-lap bolted, bonded and hybrid joints under compression

被引：25

作者：

Zhang, Hongzhuang ^{[1
]}

Li, Changyou ^{[1
]}

Xu, Mengtao ^{[1
]}

Liu, Zhendong ^{[1
]}

Jia, Dawei ^{[2
]}

Zhang, Yimin ^{[3
]}

机构：

[1] Northeastern Univ, Sch Mech Engn & Automat, Shenyang, Peoples R China

[2] AVIC SAC Commercial Aircraft Co Ltd, Shenyang, Peoples R China

[3] Shenyang Univ Chem Technol, Sch Inst Equipment Reliabil, Shenyang, Peoples R China

来源：

COMPOSITE STRUCTURES | 2020年 / 251卷

基金：

中国博士后科学基金; 中国国家自然科学基金;

关键词：

Polymer-matrix composites (PMCs); Mechanical properties; Crack; Fracture; Acoustic emission; ACOUSTIC-EMISSION; OPEN-HOLE; COMPOSITE JOINTS; FAILURE ANALYSIS; FINITE-ELEMENT; TENSILE; CARBON/EPOXY; MECHANISMS; STRENGTH; SIGNALS;

D O I：

10.1016/j.compstruct.2020.112636

中图分类号：

O3 [力学];

学科分类号：

08 ; 0801 ;

摘要：

The purpose of this paper is to investigate the failure mechanisms of carbon fiber reinforced composites (CFRP) single-lap bolted, bonded and hybrid bolted/bonded joints during compression. The failure process and the failure mechanisms of the compression tests were analyzed using field emission scanning electron microscope (FESEM) and acoustic emission (AE) technique. A novel method is proposed to obtain the relationship between the FESEM analysis and AE signals. The crack data is obtained by identifying, segmenting and quantizing FESEM images based on image processing technology. The final results give effective AE parameters for iden-tifying crack damage in composite joints, and show the superiority of the proposed method. The research in this paper puts forward important suggestions for the application of AE technique in composites and fault diagnosis.

引用

页数：16

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