Standard Practice for Minimum Detectable Temperature Difference for Thermal Imaging Systems

Importancia y uso:

5.1 This practice gives a measure of a thermal imaging system's effectiveness for detecting a small spot within a large background. Thus, it relates to the detection of small material defects such as voids, pits, cracks, inclusions, and occlusions.

5.2 MDTD values provide estimates of detection capability that may be used to compare one system with another. (Lower MDTD values indicate better detection capability.)

5.3 Due to the partially subjective nature of the procedure, repeatability and reproducibility are apt to be poor and MDTD differences less than 0.2 °C are considered to be insignificant.

Note 2: Values obtained under idealized laboratory conditions may or may not correlate directly with service performance.

Subcomité:

E07.10

Referida por:

E3045-22, E2533-21

Volúmen:

03.03

Número ICS:

17.200.20 (Temperature-measuring instruments)

Palabras clave:

infrared; infrared imaging systems; minimum detectable temperature difference; nondestructive testing; thermal imaging systems; thermography;