Static behavior and the effects of thermal cycling in hybrid laminatesStatic stiffness, strength and ultimate strain after thermal cycling were investigated for graphite/Kevlar 49/epoxy and graphite/S-glass/epoxy angle-ply laminates. Tensile stress-strain curves to failure and uniaxial tensile properties were determined, and theoretical predictions of modulus, Poisson's ratio and ultimate strain, based on linear lamination theory, constituent ply properties and measured strength, were made. No significant influence on tensile stress properties due to stacking sequence variations was observed. In general, specimens containing two 0-degree Kevlar or S-glass plies were found to behave linearly to failure, while specimens containing 4 0-degree Kevlar or S-glass plies showed some nonlinear behavior.
Document ID
19770063669
Acquisition Source
Legacy CDMS
Document Type
Conference Proceedings
Authors
Liber, T. M. (IIT Research Inst. Chicago, IL, United States)
Daniel, I. M. (IIT Research Institute Chicago, Ill., United States)
Chamis, C. C. (NASA Lewis Research Center Structures Section, Cleveland, Ohio, United States)
Date Acquired
August 9, 2013
Publication Date
January 1, 1977
Subject Category
Composite Materials
Meeting Information
Meeting: Annual Conference on Discover reinforced plastics