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Measurement of weld joint parameters and their mathematical modelling
Title Measurement of weld joint parameters and their mathematical modelling Author info D. Novák ... [et al.] Author Novák Daniel 1952- (25%) UMBFP07 - Katedra techniky a technológií
Co-authors Kvasnová Petra 1978- (25%) UMBFP07 - Katedra techniky a technológií
Volf Jaromír 1954- (25%)
Novák Viktor 1982- (25%)
Source document Agronomy Research. Vol. 15, special no. 1 (2017), pp. 1127-1140. - Tartu : Estonian University of Life Sciences, 2017 Keywords steel matematické modelovanie - mathematical modeling - mathematical modelling Language English Country Lotysh systematics 53 Annotation © 2017, Eesti Pollumajandusulikool. All rights reserved. The article deals with verifying of weld quality of weld joints created by laser beam welding technology, primarily in agricultural components such as reel screws. We presents both metallographic check of the weld structure using electron microscopy, RTG-microanalysis and micro hardness measurement as well as used mathematical models of the welding process and respective weld joints geometry. First the laser beam welding technology and concerned agricultural components are introduced. Further we specify individual steel types as well as laser types and we define specific welding parameters used in our measurements. We selected several samples of weld joints, which are further examined them in detail using optical microscopy, micro hardness measurements and RTG microanalysis. We further determined the weld shape, measured dimensions of individual weld joints as well as we checked the weld joints structure. We further introduced a mathematical model based on the program ANSYS. The model can simulate temperatures, speed field and tensions within the weld joint, basing on known thermal conductivity of the base material and specified welding conditions. Using the model, we can predict the shape of the weld and the temperatures within the material. Finally, individual welding parameters and obtained weld joint samples are briefly discussed and the applicability of the model is evaluated. Public work category ADM No. of Archival Copy 40179 Repercussion category OČKAJOVÁ, Alena - KUČERKA, Martin - KMINIAK, Richard - KRIŠŤÁK, Ľuboš - IGAZ, Rastislav - RÉH, Roman. Occupational exposure to dust produced when milling thermally modified wood. In International journal of environmental research and public health. ISSN 1661-7827, 2020, vol. 17, no. 5, pp. 1-14.
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