Infrared thermography

With regard to infrared thermography, problems connected with signal acquisition and limitations, both from the sensor and the camera points of view, are addressed together with a critical analysis of the main parameters characterizing the performance of the sensor and of the Infrared Scanning Radiometer (IRSR). In particular, the formulation of a cascade model for the evaluation of the actual System Transfer Function (STF) of a sampled IR imaging system coupled to a heat transfer sensor is discussed. Significant results referring to flow visualizations and heat transfer measurements performed with an IRSR in a number of applications are also presented.