Zygmunt Mikno

TL;DR: In this article, the authors present the process of resistance welding in relation to the expulsion of liquid metal from the weld nugget using a high speed camera, which is performed using SORPAS software-aided FEM analysis to analyse the possibility of the effective reduction of the expulsion phenomenon.

TL;DR: In this paper, the authors focused on the control of resistance projection welding process applied in joining of thin-walled metal elements, where the motion of electrode is generated by electric servo actuator that controls the force exerted on electrode or alternatively, just travel itself of electrode.

TL;DR: In this paper, the projection welding of nuts performed using the pneumatic (electrode) force system (PFS) was subjected to thorough numerical and experimental analysis, enabling the identification of the window of welding parameters taking into consideration boundary conditions including expulsion, torsional strength and the deformation of the nut thread.

TL;DR: In this paper, a numerical model of the ideal weld is presented, which enables the elimination of all welding imperfections, including, among other things, an indent left by the electrode as well as stresses and deformations of materials present in the actual welded joint.

TL;DR: In this article, a servomechanical electrode travel system was proposed to increase the repeatability of a welding process and improve the quality of joints by using a hybrid algorithm in order to control the force and travel of welding machine electrodes during welding.