Location

La Jolla, CA

Start Date

1-1-1989 12:00 AM

Description

Ultrasonic measurements of elastic moduli of composite materials have traditionally been made on either small specimens cut from a larger component or by using a scanning technique with the specimen immersed in a water bath. A phase-insensitive array has been developed for rapid nondestructive measurement of in-plane elastic moduli. The array characteristics allow for determination of energy flux deviation angle in the composite, as well as measurement of group and phase velocity. Techniques for computing the phase velocity from array measurements are described.

Volume

8B

Chapter

Chapter 8: Composites

Section

Composites—Properties

Pages

1497-1504

DOI

10.1007/978-1-4613-0817-1_188

Language

en

File Format

application/pdf

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Jan 1st, 12:00 AM

Measuring in-Plane Elastic Moduli of Composites with Arrays of Phase-Insensitive Ultrasound Receivers

La Jolla, CA

Ultrasonic measurements of elastic moduli of composite materials have traditionally been made on either small specimens cut from a larger component or by using a scanning technique with the specimen immersed in a water bath. A phase-insensitive array has been developed for rapid nondestructive measurement of in-plane elastic moduli. The array characteristics allow for determination of energy flux deviation angle in the composite, as well as measurement of group and phase velocity. Techniques for computing the phase velocity from array measurements are described.