Ultrasonic testing of aluminothermic rail welds

Obzirom da željeznički promet služi prijevozu putnika i roba važno je osigurati kvalitetu i sigurnost tračnica. Jedna od metoda zavarivanja tračnica je aluminotermijsko zavarivanje. U ovom diplomskom radu predstavljen je postupak aluminotermijskog zavarivanja tračnica, greške koje mogu pritom nastati te ultrazvučno ispitivanje zavarenog spoja dobivenog tim postupkom. U eksperimentalnom dijelu rada pomoću tri različite sonde ispituje se referentni blok, a potom se tim sondama ispituje stvarni zavareni spoj.Rail traffic is used to transport passengers and goods, therefore it's important to ensure quality and safety of rails. One of the methods of rail welding is aluminothermic welding. In this master's thesis aluminothermic rail welding, occurring defects and ultrasonic testing of rail welds are presented. In the experimental part of the thesis, reference block is tested using three different probes, followed by the tests of real weld using the mentioned probes