Characterization of Metal Matrix Composites
- Author:
- Chun, H. J.
- Published:
- Nov 1, 1994.
- Physical Description:
- 1 electronic document
- Additional Creators:
- Daniel, I. M. and Karalekas, D.
- Restrictions on Access:
- Unclassified, Unlimited, Publicly available.
Free-to-read Unrestricted online access - Summary:
- Experimental methods were developed, adapted, and applied to the characterization of a metal matrix composite system, namely, silicon carbide/aluminim (SCS-2/6061 Al), and its constituents. The silicon carbide fiber was characterized by determining its modulus, strength, and coefficient of thermal expansion. The aluminum matrix was characterized thermomechanically up to 399 C (750 F) at two strain rates. The unidirectional SiC/Al composite was characterized mechanically under longitudinal, transverse, and in-plane shear loading up to 399 C (750 F). Isothermal and non-isothermal creep behavior was also measured. The applicability of a proposed set of multifactor thermoviscoplastic nonlinear constitutive relations and a computer code was investigated. Agreement between predictions and experimental results was shown in a few cases. The elastoplastic thermomechanical behavior of the composite was also described by a number of new analytical models developed or adapted for the material system studied. These models include the rule of mixtures, composite cylinder model with various thermoelastoplastic analyses and a model based on average field theory. In most cases satisfactory agreement was demonstrated between analytical predictions and experimental results for the cases of stress-strain behavior and thermal deformation behavior at different temperatures. In addition, some models yielded detailed three-dimensional stress distributions in the constituents within the composite.
- Collection:
- NASA Technical Reports Server (NTRS) Collection.
- Note:
- Document ID: 19950012525.
Accession ID: 95N18940.
NAS 1.26:195381.
E-9121.
NASA-CR-195381. - Terms of Use and Reproduction:
- No Copyright.
- Online Version:
- hdl.handle.net
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