Mode I interlaminar crack length prediction by the resistance signal of the integrated MWCNT sensor in WGF/epoxy composites during DCB test

Yun Wan; Hailong Yang; Zhenhua Tian; Bin Yang; Guang Xian; Jiexin Weng; Shenshen Chen; Xiaohao Ding; Wenjun Luo

Journal of Materials Research and Technology (May 2020)

Mode I interlaminar crack length prediction by the resistance signal of the integrated MWCNT sensor in WGF/epoxy composites during DCB test

Yun Wan,
Hailong Yang,
Zhenhua Tian,
Bin Yang,
Guang Xian,
Jiexin Weng,
Shenshen Chen,
Xiaohao Ding,
Wenjun Luo

Affiliations

Yun Wan: School of Civil Engineering and Architecture, East China Jiaotong University, Nanchang, China
Hailong Yang: School of Civil Engineering and Architecture, East China Jiaotong University, Nanchang, China
Zhenhua Tian: Department of Military Installations, Army Logistics University of PLA, Chongqing, China
Bin Yang: School of Aerospace Engineering and Applied Mechanics, Tongji University, Shanghai, China; Corresponding author at: School of Aerospace Engineering and Applied Mechanics, Tongji University, Shanghai, China.
Guang Xian: The 41st Institute of No.6 Academy China Aerospace Science & Industry Corp., Inner Mongolia, China
Jiexin Weng: The 41st Institute of No.6 Academy China Aerospace Science & Industry Corp., Inner Mongolia, China
Shenshen Chen: School of Civil Engineering and Architecture, East China Jiaotong University, Nanchang, China
Xiaohao Ding: The 41st Institute of No.6 Academy China Aerospace Science & Industry Corp., Inner Mongolia, China
Wenjun Luo: School of Civil Engineering and Architecture, East China Jiaotong University, Nanchang, China

Journal volume & issue: Vol. 9, no. 3
pp. 5922 – 5933

Abstract

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The interlaminar peformance of composites palys an important role in the damage process of fiber reinforced composites. In-situ monitoring by an embedded sensor could avoid the sudden failure. This paper investigates the in-situ monitoring of mode I interlaminar crack propagationg behavior in woven glass fiber reinforced epoxy (WGF/epoxy) composite laminates. The resistance signal of multi-walled carbon nanotube (MWCNT) located in the mid-thickness of WGF/epoxy during the double cantilever beam (DCB) test is recorded. Relationship between the relative resistance and the interlaminar crack length is theoretically built and experimentally verified. Results show that the mode I crack propagating length can be successfully predicted by the relative resistance. A linear relationship between the interlaminar crack propagating length and the total relative resistance is found by the experimental and theoretical results.

Published in Journal of Materials Research and Technology

ISSN: 2238-7854 (Print); 2214-0697 (Online)
Publisher: Elsevier
Country of publisher: Netherlands
LCC subjects: Technology: Mining engineering. Metallurgy
Website: https://www.journals.elsevier.com/journal-of-materials-research-and-technology/

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