Accession Number : ADA303133

Title :   Measurement of Displacement Around Holes in Composite Plates Subjected to Quasi-Static Compression.

Descriptive Note : Final rept. 1 Jun-31 May 82,

Corporate Author : VIRGINIA POLYTECHNIC INST AND STATE UNIV BLACKSBURG DEPT OF ENGINEERING SCIEN CE AND MECHANICS

Personal Author(s) : Duke, John C., Jr. ; Post, Daniel ; Czarnek, Robert ; Asundi, Anand

PDF Url : ADA303133

Report Date : 31 MAY 1982

Pagination or Media Count : 59

Abstract : This study is part of a continuing exploration of the structural behavior of fiber-reinforced composite materials by NASA (Langley). The dual purposes of the present research are to (1) develop a whole-field, high sensitivity optical technique to measure load-induced changes of thickness of composite plates, and (2) measure changes of thickness of three composite plates, each with a central hole of different prescribed size, as a function of applied compressive loads. The specimens were graphite-epoxy plates.

Descriptors :   *FIBER REINFORCED COMPOSITES, *GRAPHITE EPOXY COMPOSITES, COMPRESSION, THICKNESS, NONDESTRUCTIVE TESTING, OPTICAL DETECTION, DISPLACEMENT, COMPOSITE STRUCTURES, SENSITIVITY, PLATES, STRUCTURAL RESPONSE, HOLES(OPENINGS), STRAIN GAGES, COMPRESSIVE STRENGTH, AXIAL LOADS, OPTICAL FILTERS, HOLOGRAMS, MOIRE EFFECTS.

Subject Categories : Laminates and Composite Materials
      Holography
      Optics

Distribution Statement : APPROVED FOR PUBLIC RELEASE