Criteria for selecting resin matrices for improved composite strength.Criteria are presented which can be used a priori to select matrices to yield composites with improved unidirectional strength. The criteria evolved from an investigation including both theoretical and experimental efforts. Composite micromechanics were used in conjunction with suitable experiments and reference data to identify those matrix properties which influence composite strength properties. Composites of graphite fibers and low, intermediate and high-modulus resins were investigated. It was found that the area under the matrix stress/strain diagram limited to one percent strain is a good index for an a priori assessment of the matrix contribution to composite strength. The corresponding initial modulus is a useful parameter in translating matrix properties to composite properties.
Document ID
19730039164
Acquisition Source
Legacy CDMS
Document Type
Conference Proceedings
Authors
Chamis, C. C.
Hanson, M. P.
Serafini, T. T. (NASA Lewis Research Center Cleveland, Ohio, United States)
Date Acquired
August 7, 2013
Publication Date
January 1, 1973
Subject Category
Materials, Nonmetallic
Meeting Information
Meeting: Annual Conference on Reinforced plastics - Ever new