Monday  |  Salon 9  |  02:10 PM–02:30 PM

#15677, Induction thermography: influence of Testing Parameters for Different Crack Geometry

Induction thermography has been proposed to detect and characterize shallow and open cracks on steel components. The specimen was inspected by an infrared camera that records the heating and cooling behaviour after a short induced electrical current pulse. The presence of a crack changes the distribution of the induced eddy currents with a consequent more significant local heating around the region of interest than the related sound one. This work investigates the influence of the testing parameters with a numerical and statistical approach, considering the crack geometry. Testing parameters such as the pulse duration, the current intensity and the excitation frequency have been discussed in relation to different crack sizes and orientations. Furthermore, an experimental investigation has been carried out to validate the obtained results and the adopted approach.

Davide De Vanna   Polytechnic University of Bari
Ester D’Accardi   Polytechnic University of Bari
Giuseppe Dell’Avvocato   Polytechnic University of Bari
Davide Palumbo   Polytechnic University of Bari
Umberto Galietti   Polytechnic University of Bari