ACTIVE THERMOGRAPHY – NON-DESTRUCTIVE & NON-CONTACT MATERIAL TESTING

Marius Popovici*

Micronix Plus SRL, Str. 1 Mai nr. 2, Otopeni, 075100, Jud. Ilfov, Romania

ABSTRACT

Active Thermography (AT) is a package of methods who use thermal cameras to make visible internal defects, surface cracks and material stress. Currently, they are several techniques based on active thermography: lock-in, pulse, transient, vibro and thermal stress analysis. Depending on the inspection task, one or more methods are used. This paper will give a brief overview of each method and will introduce several IR cameras suggested to be used in AT systems.

KEYWORDS: active thermography, lock-in, thermal camera, thermovision, thermal stress analysis.