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Title:Failure strength and mechanism of composite laminates under multiaxial loading conditions
Author(s):Wang, Jerry Zhiqi
Doctoral Committee Chair(s):Socie, Darrell F.
Department / Program:Mechanical Science and Engineering
Discipline:Mechanical Engineering
Degree Granting Institution:University of Illinois at Urbana-Champaign
Subject(s):Applied Mechanics
Engineering, Mechanical
Abstract:An experimental study of strength and failure behavior of orthotropic G-10 glass fiber reinforced composite laminates in an in-plane stress state has been conducted. Different types of biaxial specimens and associated test fixtures were developed and employed in the study. Standard IITRI specimens were used to determine tensile and compressive failure strengths of G-10 composite laminates in both fill and warp directions. Biaxial tension-compression (BTC) and biaxial compression-compression (BCC) flat coupon specimens with flexible end reinforcements were designed and tested to study failure behaviors and mechanisms of composite laminates under a biaxial tension-compression and biaxial compression-compression stress states. Tubular specimens loaded in axial tension, axial compression, torsion, internal pressure, and external pressure were employed to produce desired combinations of in-plane stresses and strains. Based on the biaxial failure envelopes obtained from the tests, notched BCC specimens (BCC(n)) were tested in a biaxial compression loading condition to study failure behavior of notched laminates under a biaxial stress state. Failure mechanisms of notched and unnotched composite laminates have been studied based on the test data and failure surface examination.
Issue Date:1993
Rights Information:Copyright 1993 Wang, Jerry Zhiqi
Date Available in IDEALS:2011-05-07
Identifier in Online Catalog:AAI9314957
OCLC Identifier:(UMI)AAI9314957

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