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

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

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The interlaminar look trail fusion pedals 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 fox 985-24-100 reservoir shock relative resistance is found by the experimental and theoretical results.