Location

La Jolla, CA

Start Date

1-1-1989 12:00 AM

Description

The use of ultrasonic spectroscopy for the non-destructive determination of the cohesive properties of the adhesive layer in a joint is described. It has been shown that measurements of the through thickness natural frequencies of the joint obtained using ultrasonic spectroscopy can be used to calculate the modulus and thickness of the adhesive layer. The results reported here indicate that the modulus may be determined to an accuracy of ±6%, and the thickness may be found as accurately as it can be measured independently. No other test is available which enables both these parameters to be determined after a joint is made, and it is anticipated that the test will be very valuable in ensuring that the process quality control during the joint manufacture has been satisfactory.

Volume

8B

Chapter

Chapter 7: Engineered Materials

Section

Adhesive Bonds

Pages

1377-1384

DOI

10.1007/978-1-4613-0817-1_172

Language

en

File Format

application/pdf

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Jan 1st, 12:00 AM

The NDT of Adhesive Joints Using Ultrasonic Spectroscopy

La Jolla, CA

The use of ultrasonic spectroscopy for the non-destructive determination of the cohesive properties of the adhesive layer in a joint is described. It has been shown that measurements of the through thickness natural frequencies of the joint obtained using ultrasonic spectroscopy can be used to calculate the modulus and thickness of the adhesive layer. The results reported here indicate that the modulus may be determined to an accuracy of ±6%, and the thickness may be found as accurately as it can be measured independently. No other test is available which enables both these parameters to be determined after a joint is made, and it is anticipated that the test will be very valuable in ensuring that the process quality control during the joint manufacture has been satisfactory.