National Repository of Grey Literature 136 records found  beginprevious125 - 134next  jump to record: Search took 0.01 seconds. 
System for AE signal sensing for contact fatigue tests at R-mat testing device.
Charvát, Vlastimil ; Dvořáček, Jiří (referee) ; Mazal, Pavel (advisor)
The bachelor’s thesis is concerned with project and construction holder of acoustic emission sensor in R-mat testing device. Next by selection of optimal version holder in term of production, handling, reduction of unwanted influences during measurment and testing in real conditions.
Vizualizace procesu tavného svařování
Kraus, Jan
The presented work deals with a rating of the welding process from the view of welding possibility based on a nondestructive testing record by an acoustic emission passive method (AE). The measuring are carried out on guaranteed welding materials and difficult welding materials. The material (metal-graphic and frakt-graphic) and mechanic verification of a weld creation is placed after the welding process and the reaction of the metals with a different chemical composition. There is also the analysis of the AE records depending on the material states during a formation of a fusible and resistance joint.
Possibility of damage degree analysis of cyclic loaded ceramics with acoustic emission technique using
Horský, J. ; Kotoul, M. ; Mazal, P. ; Kotek, Vladimír
A preliminary study of acoustic emission as a way of sensing damage in cemented carbides WC-Co and alumina/zirconia ceramics in low cycle compression-compression conditions was performed. Significant differences in acoustic emission data gathered on cemented carbides samples and alumina/zirconia ceramics samples were observed. The goal of further research is proposed

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