Active thermography with inductive excitation is proposed as a reliable method for substitution of magnetic particle inspection on steel automotive components. A study for inner part inspection of the component is presented, where typical superficial cracks of different length (>5 mm) and orientation are detected by induction thermography. Programmed acquisition and analysis with Fourier transformation are developed to obtain a phase image for crack detection. Image processing can be developed

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... or a reliable detection of the crack within the geometrical indications. Short induction and testing times per view will allow acceptable inspection times for the complete steel parts.