Acta Univ. Agric. Silvic. Mendelianae Brun. 2016, 64, 15-29
Published online 2016-02-29

Visualization of Spot- welding Resistance

Michal Černý, Petr Dostál, Vojtěch Kumbár

Department of Technology and Automobile Transport, Faculty of AgriSciences, Mendel University in Brno, Zemědělská 1, 613 00 Brno, Czech Republic

This contribution devotes to monitoring of processes running during joining of steel sheets by incadescent so called point welding using non-destructive trial method – acoustic emission (AE). The joining process is detailed described within experimental measuring from the point of view of metallurgic effects runnig during weld creation (records obtained by means of AE method). It takes into consideration quality of joined steels within welding data of steel producer. Steel welding (determined by chemical composition) during mechanical verification and firmness of welds consider results of measurement AE and fracture effect of point joints. The measurement also demonstrates conclusion about connection of metallurgic processes with material wave effects (AE measurement) and their impact on firmness of joint at steel with guaranteed welding, difficult welding and at their potential combination.


The research has been supported by the project TP 4/2014 „Analysis of degradation processes of modern materials used in agricultural technology“ financed by IGA AF MENDELU.


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