Croatian Union of Mechanical Engineers and Naval Architects
Abstract
This paper presents welding current influence on spreading of electromagnetic field in TIG welding process. The quality of welding is analyzed by „Fast Fourier Transformation“ (FFT) on recorded current. Electric and magnetic field are measured using an instrument „Macshek ESM – 100 3D Fieldmeter“ [1]. Welding current is recorded using the On-line monitoring system [2]. Recording parameters of these two devices have synchronization time on On-line interface over hardware pin and interrupt routine in LabView software platform. Scale, resolution and synchronization of measured signals are additionally analyzed in Matlab.U radu se predstavlja utjecaj struje zavarivanja na prostorno širenje magnetskog i električnog polja kod TIG zavarivanja. Analizom u Matlabu „Fast Fourier Transformation“ (FFT) nad snimljenom strujom utvrđuje se kvaliteta aparata za zavarivanje. Električno i magnetsko polje mjeri se pomoću instrumenta „Macshek ESM – 100 3D Fieldmeter“ [1]. Struja zavarivanja snima se pomoću On-line monitoring sustava [2]. Vremenska sinkronizacija snimanja parametara ova dva uređaja odrađuje se hardverskim pinom na On-line sučelju i prekidnom rutinom u softverskoj platformi LabView. Skaliranje razlučivosti i sinkronizacija mjernih signala nadalje se odrađuje u Matlabu
