Abstract
Pressure sensitive paint (PSP) has widely used in many engineering field, both in a micro scale and in a macro scale, due to the rapid development of hardware. That is also supported by many fundamental researches of researchers in various fields. The temporal spatial resolution of the PSP and the reliability became higher. The PSP can be also applied to the unsteady flow field and to relatively low speed flow with less pressure change. In the report, the state of the art of the PSP is summarizes from a broad point of view, including following topics, sensor materials for the pressure and temperature measurements, hardware, the intensity-based measurement method, the lifetime-based technique, simultaneous measurements, combined measurements, practical applications and so on.