Location

La Jolla, CA

Start Date

1981 12:00 AM

Description

Initial experiments have been performed to characterize the scattering of acoustic waves from glass/ epoxy and graphite/epoxy composite panels. Experiments were conducted in the region 0.1 ≤ ka ≤ 1.0 on both types of fiber reinforced composites. The data clearly show that a maximum in the backscattering ultrasonic energy occurs for orientations which place the fiber axis perpendicular to the propagation vector.

Book Title

Proceedings of the ARPA/AFML Review of Progress in Quantitative NDE

Chapter

5. Composites, Adhesive Bonds, New Phenomena and Problems

Pages

78-80

Language

en

File Format

application/pdf

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Jan 1st, 12:00 AM

Nondestructive Evaluation of Composite Materials with Backscattering Measurements

La Jolla, CA

Initial experiments have been performed to characterize the scattering of acoustic waves from glass/ epoxy and graphite/epoxy composite panels. Experiments were conducted in the region 0.1 ≤ ka ≤ 1.0 on both types of fiber reinforced composites. The data clearly show that a maximum in the backscattering ultrasonic energy occurs for orientations which place the fiber axis perpendicular to the propagation vector.