Accession Number : ADA300138

Title :   Interfaces in Inorganic Matrix Composites: Atomistic Simulation and Experiment.

Descriptive Note : Final rept. 15 May 91-May 95,

Corporate Author : MASSACHUSETTS INST OF TECH CAMBRIDGE MATERIALS PROCESSING CENTER

Personal Author(s) : Megusar, J. ; Yip, S. ; Cornie, J. A. ; Chambers, B. V. ; Isik, A.

PDF Url : ADA300138

Report Date : JUN 1995

Pagination or Media Count : 109

Abstract : The objective of this research was to contribute to the design or structure and mechanical properties of ceramic and carbon materials, by applying atomistic simulation and experiment. In the research on carbon, methodology has been developed to construct amorphous carbon/graphite and graphite/graphite (twin) interfaces by using empirical potential function. Simulation observations have been validated by HRTEM and mechanical testing. In the research on silicon carbide, the extent to which beta-SiC ran be treated by a classical many-body potential function has been established. It has been also shown how stability analysis can be combined with MD simulation to achieve quantitative interpretation of the lattice deformation under an applied load. In the experimental study of interface strength, a method has been developed by using laser induced shock waves. It has been applied to model couples consisting of SiC and sapphire, with or without carbon interlayers. jg p.1

Descriptors :   *SIMULATION, *INTERFACES, *COMPOSITE MATERIALS, *INORGANIC MATERIALS, TEST AND EVALUATION, COUPLING(INTERACTION), FUNCTIONS, MECHANICAL PROPERTIES, STABILITY, MODELS, LAYERS, DEFORMATION, SHOCK WAVES, GRAPHITE, MATRIX MATERIALS, AMORPHOUS MATERIALS, ATOMS, CARBON, LASERS, CERAMIC MATERIALS, SAPPHIRE, STRENGTH(GENERAL), LATTICE DYNAMICS, SILICON CARBIDES, N BODY PROBLEM.

Subject Categories : Ceramics, Refractories and Glass
      Inorganic Chemistry
      Laminates and Composite Materials
      Mechanics

Distribution Statement : APPROVED FOR PUBLIC RELEASE