Thermography for Characterisation of Deformation Process in Stainless Steels

It is well known that during tensile testing, a part of the mechanical work done on the specimen is transformed into heat energy. The rate of rise and maximum temperature attained depends on the nature of material, its deformation behaviour and test conditions. This paper highlights the application of thermography for characterising various stages of tensile deformation in AISI type 316 stainless steel and predicting the zone of failure in advance. Multi layered perceptron based ANN was used for predicting the temperature based on the experimental data. Temperature prediction especially in work hardening region could be done with errors less than 1.0%.