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National Repository of Grey Literature 2 records found  Search took 0.01 seconds. 
Acoustic emissions sensing during creep testing in a modifiedatmosphere
 Dvořák, Jiří ; Svobodová, M. ; Sklenička, Václav
The objective of the developed methodology for sensing 'in-situ' acoustic emissions during a creep test in a modified atmosphere was to minimise or eliminate noise on acoustic emission records caused by synergistic acting oxidation processes that may critically influence the identification and intensity of the acting own creep degradation processes and the relevant evaluation of the measured data.
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DETECTION OF DEFECTS BY ACOUSTIC EMISSIONS (AE) UNDER HIGH-TEMPERATURE CREEP CONDITIONS
 Dvořák, Jiří ; Sklenička, Václav ; Král, Petr ; Kvapilová, Marie ; Svobodová, M. ; Šifner, J. ; Koula, V.
Current acoustic emission (AE) applications are preferably oriented to continuous monitoring of machine component operation. AE is a perspective non-destructive method for early prediction and identification of material defects to avoid a disaster of running equipment. The paper analyzes the measured data and analysis of signals at the level of individual emission events during the creep test of a copper based on the results of previously performed microstructural and fractographic analyses of its creep damage evolution and fracture. The aim of the model study is to contribute to the successful application of AE for real operating components of power equipments and thus to increase their operational safety.
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