Accession Number : ADA317562

Title :   Mechanics of Localized Deformation of Solids Under Cyclic and Thermal Loadings.

Descriptive Note : Final technical rept. 1 Sep 92-31 Aug 96,

Corporate Author : CALIFORNIA UNIV LOS ANGELES

Personal Author(s) : Lin, T. H.

PDF Url : ADA317562

Report Date : 23 SEP 1996

Pagination or Media Count : 24

Abstract : The student under the training program is first taught with the ground work of crystal physics and the transformation of axes in second-rank tensors. Then he has participated in different topics in the parent research grant (F49620-92-J-0171), 'Mechanics of Localized Deformation of Solids under Cyclic Mechanical and Thermal Loadings. He has contributed more in the following two areas: (1) Effect of single crystal elastic anisotropy on the fatigue band deformation in polycrystals. The application of Eshelby's Equivalent Inclusion Method to transform an inhomogeneous solid into a homogeneous one in shown and a numerical example is given. (2) The analysis of the growth of extrusions in a single crystal is shown. The boundary tractions of a most favorably oriented crystal at the free surface of a polycrystal are removed to simulate a single crystal. The calculated extrusions are compared with those observed subgrain boundary movements.

Descriptors :   *THERMAL PROPERTIES, *LOADS(FORCES), *DEFORMATION, *SOLIDS, *CYCLES, *MECHANICS, GROWTH(GENERAL), ELASTIC PROPERTIES, EXTRUSION, SINGLE CRYSTALS, BOUNDARIES, PHYSICS, ANISOTROPY, TRACTION, AXES, FATIGUE(MECHANICS), TRANSFORMATIONS, POLYCRYSTALLINE.

Subject Categories : Physical Chemistry
      Crystallography
      Mechanics
      Thermodynamics

Distribution Statement : APPROVED FOR PUBLIC RELEASE