Accession Number : ADA309328

Title :   Design Properties of Randomly Reinforced Fiber Composites.

Descriptive Note : Technical note,

Corporate Author : NATIONAL AERONAUTICS AND SPACE ADMINISTRATION CLEVELAND OH LEWIS RESEARCH CEN TER

Personal Author(s) : Chamis, Christos C.

PDF Url : ADA309328

Report Date : MAR 1972

Pagination or Media Count : 28

Abstract : The pseudoisotropic laminate analogy is used in conjunction with fiber composite micro and macromechanics to predict the thermal and mechanical properties of planar randomly reinforced fiber composites (PRRFC). Theoretical results are presented for boron/aluminum, boron/epoxy, Thornel-50/epoxy, and S-glass/epoxy PRRFC. The results show that the thermal and elastic properties depend on both constituent materials and the fiber volume ratio. The strength depends also on the type of applied stress. In general, no simple ratio exists between the properties of unidirectional fiber composites and those of PRRFC. The data are presented in convenient graphical form to serve as an aid for design and/or analysis and also for further research in PRRFC. The residual stresses and the impact resistance are also theoretically examined.

Descriptors :   *FIBER REINFORCED COMPOSITES, *EPOXY COMPOSITES, THERMAL PROPERTIES, MECHANICAL PROPERTIES, RESISTANCE, ELASTIC PROPERTIES, IMPACT STRENGTH, ALUMINUM, GLASS FIBERS, RESIDUAL STRESS, BORON.

Subject Categories : Laminates and Composite Materials

Distribution Statement : APPROVED FOR PUBLIC RELEASE