A Study of the Stress Wave Factor Technique for Nondestructive Evaluation of Composite Materials.
VIRGINIA POLYTECHNIC INST AND STATE UNIV BLACKSBURG DEPT OF ENGINEERING SCIEN CE AND MECHANICS
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This interim report updates the reported findings under NASA Grant 3-172. Included are descriptions of a novel optical in-planeout-of-plane displacement sensor, a data acquisition system, an extensive data analysis software package, the azimuthal variation of acousto-ultrasonic behavior in graphiteepoxy laminates, nd preliminary examination of processing variation in graphitealuminum tubes.
- Laminates and Composite Materials