A Study on the Intralaminar Damage and Interlaminar Delamination of Carbon Fiber Composite Laminates Under Three-Point Bending Using Acoustic Emission

被引：16
作者：
Liu P.F. [1 ]
Yang J. [1 ]
Wang B. [2 ]
Zhou Z.F. [3 ]
Zheng J.Y. [1 ]
机构：
[1] Institute of Chemical Machinery and Process Equipment, Zhejiang University, Hangzhou
[2] Hangzhou Special Equipment Inspection Institute, Hangzhou
[3] Engineering Division, Zhejiang University City College, Hangzhou
来源：
Journal of Failure Analysis and Prevention | 2014年 / 15卷 / 01期
基金：
中国国家自然科学基金;
关键词：
Acoustic emission (AE) test; Carbon fiber composite laminates; Intralaminar damage and interlaminar delamination; Single-leg three-point bending (SLB) and over-leg three-point bending (OLB);
D O I：
10.1007/s11668-014-9901-8
中图分类号：
学科分类号：
摘要：
The complicated failure mechanisms are always distinct features of composite materials which largely affect the stiffness and strength as well as the structural integrity. Yet, until now there are still no mature methods based on various test approaches for accurately predicting the failure mechanisms and damage evolution behaviors of composite structures by considering the effects of loads, environments, and material defects. This research designs and prepares the [0°16//0°16], [30°16//30°16], and [15°/−15°]3s//[15°/−15°]3s carbon fiber composite specimens with initial interlaminar cracks, and performs the single-leg and over-leg three-point bending mechanical experiments and acoustic emission (AE) tests of composite specimens under 70 °C temperature. The effects of the layup patterns, the loading conditions, and the initial interlaminar crack length on the intralaminar damage and interlaminar delamination behaviors of composite laminates are comparatively studied by analyzing the response process of the AE characteristic parameters including the amplitude, energy, and counting. The AE analysis provides theoretical and technique support for further elucidating the complicated failure mechanisms and their interactions of carbon fiber composite laminates. © 2014, ASM International.
引用
收藏
页码：101 / 121
页数：20
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