Simple model to predict the interlaminar shear strength of laminate composites

Title
Simple model to predict the interlaminar shear strength of laminate composites
Author(s)
이동주이고 팔리[이고 팔리]
Keywords
FIBER-REINFORCED COMPOSITES; FRACTURE-TOUGHNESS; VOLUME FRACTION; CARBON/EPOXY; ENHANCEMENT; POROSITY
Issue Date
201206
Publisher
SAGE PUBLICATIONS LTD
Citation
JOURNAL OF COMPOSITE MATERIALS, v.46, no.11, pp.1357 - 1365
Abstract
The interlaminar shear strength of a unidirectional fiber-reinforced polymer-matrix composite is a fundamental material property that is a limiting design characteristic. To understand the point of weakening and develop a better composite, a simple analytical model is needed to evaluate the interlaminar shear strength. Based on fracture mechanics using a staggered array of parallel fibers with a hexagonal cross-section, the elastic energies of undamaged and damaged cells are obtained. By comparing these energies, the interlaminar shear strength can be calculated. It is found that the predicted interlaminar shear strength decreases with increasing fiber content in a similar manner as the experimental results. Also, the calculated fracture toughness as per Mode II delamination using the measured interlaminar shear strength and the analytical model is quite accurate when compared with various experimental results. Various factors that affect the shear strength are discussed and investigated through results in the literature.
URI
http://hdl.handle.net/YU.REPOSITORY/28067http://dx.doi.org/10.1177/0021998311418547
ISSN
0021-9983
Appears in Collections:
공과대학 > 기계공학부 > Articles
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