As in all fields of NDT,continuous developments and improvements in equipment reveal new techniques of inspection. This is particulary true in the case of thermography with the introdution for civil use of scanning infra-red cameras or contact thermography systems with combines fast scanning speeds with good spatial and thermal resolution. In combination with suitable sources such systems can be readily used to monitor transient thermal diffusion effects in solids. The object of this paper is to describe todays application techniques of thermography in the non destructive testing field. The paper shows experiences of Florin & Scherler AG, a institute, which only is working in thermal mapping.
"Thermal Testing Methods As New Tool In NDT", Proc. SPIE 0780, Thermosense IX: Thermal Infrared Sensing for Diagnostics and Control, (11 May 1987); doi: 10.1117/12.940498; https://doi.org/10.1117/12.940498