Inspection of pressure vessels used in refrigeration and air conditioning systems

The survey consists in developing a monitored method, which uses the acoustic emission technique, allowing the overall quality of the structure to be assessed during testing while warranting the reliability of such a test when conducted pneumatically. The results given in this paper refer to tensile...

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Bibliographic Details
Published in:Journal of acoustic emission 2001-11, Vol.18-19, p.144-149
Main Authors: Skraber, A, Zhang, F, Cherfaoui, M, Legin, L
Format: Article
Language:English
Online Access:Get full text
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Summary:The survey consists in developing a monitored method, which uses the acoustic emission technique, allowing the overall quality of the structure to be assessed during testing while warranting the reliability of such a test when conducted pneumatically. The results given in this paper refer to tensile test runs on specimens and in-laboratory pressurization tests on refrigeration capacities. These tests have proven the fitness of acoustic emissions to detect growing defects on tanks made of a material for which the production processes (chemical pickling, shot-blasting, etc.) allow the surface oxide layer resulting from rolling to be eliminated. A space-time criterion allowing the discrimination of the signals representative of changes in a crack during the testing cycle has been developed.
ISSN:0730-0050