Review of pulse phase thermography

Pulsed phase thermography (PPT) was proposed in 1996 to enhance results from pulsed thermography experiments. PPT can be thought as the link between pulsed thermography (PT) and lock-in thermography (LT), since it provides phase delay (and amplitude) data (as in LT) from a PT configuration. PPT theory as well as some experimental investigations has been addressed in detail in previous works. In this paper, we review the basic theory and thee experimental aspects behind PPT and we discuss the latest developments.