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Title: Acoustic Emissions Signal Failures Before They Occur
Author: G. D. Nicholson, R. P. Meister
Source: American Gas Association 1970
Year Published: 1970
Abstract: A new technique has evolved for the inspection of materials and structures. It consists of listening electronically to the sounds produced as materials begin to fail. At Battelles Columbus Laboratories, acousticemission monitoring (AEM) is being developed as a tool for the evaluation of structural integrity. Loading structures to their design load while monitoring for acoustic emissions provides an immediate measure of the quality of the entire volume of the structure. This technique has been applied successfully to nondestructive tests of steel and fiber glass-epoxy composite pressure vessels. AEM has the potential of routinely determining the soundness of fiber-glass booms in aerial basket equipment.

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