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Quality Evaluation By Acousto-Ultrasonic Testing Of CompositesPromising nondestructive-testing method based on ultrasonic simulation of stress waves. Report reviews acousto-ultrasonic technology for nondestructive testing. Discusses principles, suggests advanced signal-analysis schemes for development, and presents potential applications. Acousto-ultrasonics applied principally to assess defects in laminated and filament-wound fiber-reinforced composite materials. Technique used to determine variations in such properties as tensile, shear, and flexural strengths and reductions in strength and toughness caused by defects. Also used to evaluate states of cure, porosities, orientation of fibers, volume fractions of fibers, bonding between fibers and matrices, and qualities of interlaminar bonds.
Document ID
19890000314
Acquisition Source
Legacy CDMS
Document Type
Other - NASA Tech Brief
Authors
Vary, Alex
(NASA Lewis Research Center, Cleveland, OH.)
Date Acquired
August 14, 2013
Publication Date
June 1, 1989
Publication Information
Publication: NASA Tech Briefs
Volume: 13
Issue: 6
ISSN: 0145-319X
Subject Category
Mechanics
Report/Patent Number
LEW-14709
Accession Number
89B10314
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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