The influence of technological defects on the mechanical behavior of CFRP during buckling under compression based on DIC data and acoustic emission

被引：2

作者：

Slovikov, S. V. ^{[1
]}

Chebotareva, E. A. ^{[1
]}

Lobanov, D. S. ^{[1
]}

Melnikova, V. A. ^{[1
]}

机构：

[1] Perm Natl Res Polytech Univ, Ctr Expt Mech, Perm, Russia

来源：

FRATTURA ED INTEGRITA STRUTTURALE-FRACTURE AND STRUCTURAL INTEGRITY | 2024年 / 18卷 / 69期

基金：

俄罗斯科学基金会;

关键词：

Carbon-fiber composite; Buckling; Dry-spot; Wrinkles; Mechanical behavior; Compression; Acoustic emission; Digital image correlation; COMPOSITE; DAMAGE;

D O I：

10.3221/IGF-ESIS.69.05

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

The research focuses on examining the impact of technological defects, specifically "dry-spot" and "wrinkles," on the mechanical behavior and buckling resistance of structural composites. The investigation of the buckling phenomenon was carried out through a compression test on a thin plate fabricated from carbon-fiber-reinforced polymer (CFRP) laminate. This test was performed using a specialized fixture designed in accordance with ASTM 3410 standard. For the analysis, the study employed a three-dimensional digital optical system, Vic-3D, in conjunction with the AMSY-6 acoustic emission system. The research showcases findings from acoustic emission signals that verify the shear-based mechanism of buckling in plates constructed from CFRP featuring "dry-spot" type defects. In the case of "wrinkles" defects, it was observed that transverse shear transpires at the stress concentration points created by the "excess" layers. © 2024.

引用

页码：60 / 70

页数：11

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