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http://dx.doi.org/10.5139/JKSAS.2007.35.1.058

Mixed Mode Interlaminar Fracture Behaviors of Carbon Fabric/Epoxy Composites  

Yoon, Sung-Ho (금오공과대학교 기계공학부)
Heo, Kwang-Soo (금오공과대학교 기계공학부 대학원)
Oh, Jin-Oh (금오공과대학교 기계공학부 대학원)
Publication Information
Journal of the Korean Society for Aeronautical & Space Sciences / v.35, no.1, 2007 , pp. 58-65 More about this Journal
Abstract
Mixed mode interlaminar fracture behaviors of carbon fabric/epoxy composites were investigated through MMF (Mixed Mode Flexural) test by varying mixed mode ratio ranging from 20% to 90%. Mixed mode interlaminar fracture criteria based on NL point and 5% offset point were also suggested in order to predict mixed mode interlaminar fracture behaviors. Fracture surfaces and crack propagating behaviors were examined through a travelling scope and a scanning electron microscope. According to the results, mixed mode interlaminar fracture behaviors can be predicted by mixed mode interlaminar fracture criterion with m=1.5 and n=0.5 on the basis of NL point or mixed mode interlaminar fracture criterion with m=2 and n=3 on the basis of 5% offset point. Fracture surfaces and crack propagating behaviors are sensitive to mixed mode ratios. MMF test can be successfully applicable in evaluating mixed mode interlaminar fracture toughness of carbon fabric/epoxy composites.
Keywords
Mixed Mode Interlaminar Fracture Behaviors; Carbon Fabric/Epoxy Composites; Mixed Mode Interlaminar Fracture Criterion;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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