Determination of Delaminations in Adhesively Bonded Layers under Compression
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Begun in 1973, the Review of Progress in Quantitative Nondestructive Evaluation (QNDE) is the premier international NDE meeting designed to provide an interface between research and early engineering through the presentation of current ideas and results focused on facilitating a rapid transfer to engineering development.
This site provides free, public access to papers presented at the annual QNDE conference between 1983 and 1999, and abstracts for papers presented at the conference since 2001.
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Abstract
To determine the presence of delaminations in adhesively bonded layers bv ultrasonic methods, the changes which occur in the propagating ultrasonic energy must be uniquely attributable to the delamination effects. Determination of absolute attenuation and its variation in each adherend layer is prerequisite. In addition, the distinction between adhesively bonded interfaces from those just in physical contact must be established. In this paper, we describe a systematic study of the effect of compression on bonded and unbonded areas on ultrasonic attenuation. The results of the simulation experiment are used to interpret digital images of adhesively bonded polyethylene-rubber-steel piston inserts.