Quantitative evaluation of the welded area in Resistance Projection Welded (RPW) thin joints by pulsed laser thermography
Giuseppe Dell’Avvocato, Dirk Gohlke, Davide Palumbo, Rainer Krankenhagen, Umberto Galietti
Abstract
A semi-automatic thermographic procedure for the assessment of the welded area of resistance projection welded joints has been developed. Currently, to assess the quality of RPW joints destructive tests are used and the more commonly used non-destructive technique is the ultrasonic one. The possibility for a quantitative evaluation of the welded area by thermographic technique has been proved by means of an innovative procedure applied on steel RPW joints with ‘as it’ surface conditions. Measurements obtained by thermography and ultrasound have been compared, to verify the developed procedure.
Topics & Concepts
ThermographyWeldingNondestructive testingMaterials scienceProjection (relational algebra)Ultrasonic sensorAcousticsComputer scienceComposite materialOpticsInfraredRadiologyPhysicsMedicineAlgorithmWelding Techniques and Residual StressesThermography and Photoacoustic TechniquesMechanical and Thermal Properties Analysis