Accession Number : ADA306930

Title :   Materials Properties - Information from Non-Destructive and Destructive Experiments Via Simulation.

Descriptive Note : Final rept. 27 Jul 94-27 Dec 95,

Corporate Author : ARIZONA UNIV TUCSON

Personal Author(s) : Frantziskonis, George N.

PDF Url : ADA306930

Report Date : DEC 1995

Pagination or Media Count : 38

Abstract : This work addresses procedures to obtain robust information on the mechanical properties of materials via simulation of relevant nondestructive and destructive experiments. Under this grant the general problem of information on properties of the fiber-matrix interface in composite materials is examined. A novel procedure for obtaining quantitative information on mechanical, including failure, properties of the interface is utilized, i.e., by simulating actual experiments in detail, including fiber properties of the interface is utilized, i.e., by simulating actual experiments in detail, including fiber breakage, matrix, yield and/or cracking, and interface failure. In a recent relevant study, the procedure was implemented for simulating commonly performed experiments, i.e., the fragmentation test for metal matrix composites (MMCs), the pushout and pullout tests for MMCs as well as ceramic matrix composites (CMOs). Herein the so-called transverse test is examined in detail with emphasis given on residual stresses. One major finding is that the (transverse) properties of the interface depend strongly on the residual stresses present, which, in turn, depend on the geometry of the structure/specimen examined and on the processing temperature.

Descriptors :   *CERAMIC MATRIX COMPOSITES, *FIBER REINFORCED COMPOSITES, *METAL MATRIX COMPOSITES, *CERAMIC MATERIALS, *TITANIUM ALLOYS, STRESS STRAIN RELATIONS, MECHANICAL PROPERTIES, NONDESTRUCTIVE TESTING, INTERFACES, COMPOSITE MATERIALS, DAMAGE ASSESSMENT, MODULUS OF ELASTICITY, TEST METHODS, MATRIX MATERIALS, THERMAL EXPANSION, RESIDUAL STRESS, YIELD STRENGTH, FAILURE(MECHANICS), SILICON CARBIDES, POISSON RATIO, TRANSVERSE.

Subject Categories : Ceramics, Refractories and Glass
      Laminates and Composite Materials
      Properties of Metals and Alloys

Distribution Statement : APPROVED FOR PUBLIC RELEASE