Accession Number : ADA187482

Title :   The Analysis of Deformations and Strains in Composites by Moire Interferometry.

Descriptive Note : Final rept.,

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

Personal Author(s) : Post, Daniel

PDF Url : ADA187482

Report Date : Jul 1987

Pagination or Media Count : 11

Abstract : Local deformation fields are exhibited for several composite members. Cases of severe shear strain gradients and local anomalies of material behavior are emphasized. Examples illustrated are from short beam tests, strain concentration analyses, multi ply panel tests and slotted metal-matrix tensile specimen tests. The experimental method, moire interferometry, yielded contour maps of in plane displacement fields with subwavelength sensitivity, high fringe contrast and high spatial resolution.

Descriptors :   *COMPOSITE MATERIALS, *INTERFEROMETRY, *MOIRE EFFECTS, DEFORMATION, ANOMALIES, GRADIENTS, HIGH RATE, INTENSITY, SHEAR STRENGTH, STRAIN(MECHANICS), CONTOURS, MAPS, HIGH RESOLUTION, SPATIAL DISTRIBUTION, DISPLACEMENT

Subject Categories : Laminates and Composite Materials

Distribution Statement : APPROVED FOR PUBLIC RELEASE