Accession Number : ADA194418

Title :   Experimental Aspects of Using Time-Averaged Holographic Interferometry to Detect Barely Visible Impact Damage in a Graphite/Epoxy Composite Plate,

Corporate Author : AERONAUTICAL RESEARCH LABS MELBOURNE (AUSTRALIA)

Personal Author(s) : Rumble, S J

PDF Url : ADA194418

Report Date : 25 Aug 1987

Pagination or Media Count : 36

Abstract : Time-averaged holographic interferometry has been used to detect barely visible impact damage in a graphite/epoxy plate. Details are given of both the experimental and theoretical aspects of time-averaged holographic interferometry, including temporal modulation of the laser light. Double exposure holographic interferometry has also been used to detect barely visible impact damage.

Descriptors :   *COMPOSITE STRUCTURES, *EPOXY COMPOSITES, *EXPOSURE(GENERAL), *GRAPHITE, *HOLOGRAPHY, *INTERFEROMETRY, *PLATES, AUSTRALIA, DAMAGE, IMPACT, LASER BEAMS, VISIBILITY, IMPACT TESTS, OPTICAL IMAGES, MATHEMATICAL ANALYSIS

Subject Categories : Laminates and Composite Materials

Distribution Statement : APPROVED FOR PUBLIC RELEASE