Accession Number : ADA300116

Title :   Fracture Mechanics of Advanced Composites (DEPSCoR 92).

Descriptive Note : Final rept. 30 Sep 93-31 Mar 95,

Corporate Author : TULANE UNIV NEW ORLEANS LA DEPT OF MECHANICAL ENGINEERING

Personal Author(s) : Larson, Michael C.

PDF Url : ADA300116

Report Date : 31 MAR 1995

Pagination or Media Count : 22

Abstract : This report document instrumentation obtained under a DEPSCoR grant to support research in the mechanics of advanced composite materials. While the equipment will support a broad range of research topics, it has already spawned studies into micromechanical fracture of advanced composite materials and nondestructive evaluation of cracked bodies. Specifically, a laser interferometry system (including optical and vibration isolation components with image processing hardware and software), and a tensile substage for an electron microscope, form the core of an experimental program which complements analytical computational investigations. Progress is being made in two particular areas. The first of these is the development of a coupled experimental and computational methodology for solving inverse fracture problems using laser holographic interferometry. The methodology can be utilized in the fracture mechanics of homogeneous and heterogeneous media to determine the location, size and geometry of an embedded crack given the measured displacement history of a free surface.

Descriptors :   *COMPOSITE MATERIALS, *FRACTURE(MECHANICS), COMPUTER PROGRAMS, NONDESTRUCTIVE TESTING, STRESS ANALYSIS, CRACKING(FRACTURING), ELECTRON MICROSCOPES, VIBRATION ISOLATORS, LASERS, INTERFEROMETRY, CRACK PROPAGATION, HOLOGRAPHY, EMBEDDING, INVERSION, MICROMECHANICS, TENSILE TESTERS.

Subject Categories : Laminates and Composite Materials
      Holography
      Optics

Distribution Statement : APPROVED FOR PUBLIC RELEASE