Testing the Tensile Features of Steel Specimens by Thermography and Conventional Methods

 

Marina Kutin

Slavica Ristić

Zijah Burzić

Mirjana Puharić

 

The paper shows the results obtained in the simultaneous testing of DX55D steel specimens using conventional methods and thermography. The main aim of the testing was to relate the temperature changes of the specimens, continuously recorded by thermography, with the stress – extension diagram. It enables to predict reaching the critical stresses which cause the appearance of fractures and to define the criteria for determining the maximum sample temperature alteration in the field of elastic and elastic-plastic strains.

Key words: thermography, fracture mechaniques, critical stress, tension, steel.