Bond Strength Measurements by Ultrasonic Spectroscopy Alers, G 2018-02-16T10:06:01.000 2020-06-30T06:26:45Z 2020-06-30T06:26:45Z 1978
dc.description.abstract <p>The goal of this project has been to discover techniques for predicting the strength of a metal-to-metal adhesive bond from nondestructive measurements on the completed structure. Both the cohesive strength of the adhesive material itself and the adhesive strength of the metal-to-adhesive interface must be determined separately. In previous phases of the program, it was demonstrated that the Fourier transform of the ultrasonic echo returned from a metal-adhesive-metal sandwich structure immersed in a water bath contained sufficient information to obtain a prediction of the cohesive strength of the joint. Furthermore, certain features of the Fourier transform were shifted by thin layers of "different" materials at the metal-to-adhesive interfaces so that detecting poor adhesion was also a possibility. During the current phase of the program, more reliable mechanical tests and more accurate measurement techniques were developed. As a result, measurements of the wave velocity in FM-400 adhesive joints subjected to different degrees of cure correlated with the cohesive shear strength of the joints. Quantitative measurements of the standing wave resonant frequencies in Chemlok 304 adhesive joints showed a correlation with the strength of adhesion at the metal-to-adhesive interface.</p>
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dc.identifier archive/
dc.identifier.articleid 4482
dc.identifier.contextkey 7139848
dc.identifier.s3bucket isulib-bepress-aws-west
dc.identifier.submissionpath qnde/1977/allpapers/32
dc.language.iso en
dc.relation.ispartofseries Review of Progress in Quantitative Nondestructive Evaluation
dc.source.bitstream archive/|||Fri Jan 14 23:33:44 UTC 2022
dc.subject.disciplines Engineering Mechanics
dc.subject.disciplines Mechanics of Materials
dc.subject.disciplines Metallurgy
dc.title Bond Strength Measurements by Ultrasonic Spectroscopy
dc.type event
dc.type.genre event
dspace.entity.type Publication
relation.isSeriesOfPublication 289a28b5-887e-4ddb-8c51-a88d07ebc3f3
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