Accession Number : ADA302663

Title :   Longitudinal Splitting in Unidirectional Composites, Analysis and Experiments.

Descriptive Note : Final rept.,

Corporate Author : CLEMSON UNIV SC DEPT OF MECHANICAL ENGINEERING

Personal Author(s) : Goree, James G. ; Wolla, Jeffrey M.

PDF Url : ADA302663

Report Date : APR 1985

Pagination or Media Count : 114

Abstract : Composite materials are, in general, formed when two or more chemically distinct materials are combined so that a distinct interface will separate the components (as opposed to alloys). Each of the constituent materials has its own physical properties, but the resulting composite has properties different from each material alone. It is desirable for the composite to take advantage of selected properties from each constituent. Of the several types of composite materials, the category of particular interest is the continuous fiber-reinforced, or fibrous, composite. This type consists of one phase which is usually much stronger (fiber) than the other phase (matrix). This combination leads to anisotropic properties which provide the capability of designing for specific characteristics such as high strength in one critical direction. This is also the composite material that has been the most analyzed and reported in the literature. The text by Jones presents a macroscopic approach to predicting composite properties and behavior. A more statistical approach is presented by Zweben where the statistical scatter of fiber strength and local fiber overstress due to fiber discontinuities are considered. These analyses concentrate on initially undamaged composites. Work is also being done where some type of initial damage is present in the laminate, usually in the form of a crack through both the fiber and matrix. The goal is to determine how the composite strength and fracture behavior under loading are affected by this damage. (MM)

Descriptors :   *COMPOSITE MATERIALS, *FIBER REINFORCED COMPOSITES, INTERFACES, MATRIX MATERIALS, ALLOYS, STRENGTH(MECHANICS), FRACTURE(MECHANICS), COATINGS, BRITTLENESS, HIGH STRENGTH, TROPICAL REGIONS, SPLITTING, STATISTICAL PROCESSES, DISCONTINUITIES, UNIDIRECTIONAL, FIBER REINFORCEMENT.

Subject Categories : Laminates and Composite Materials

Distribution Statement : APPROVED FOR PUBLIC RELEASE