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Quantitative evaluation of optical lock-in and pulsed thermography for aluminum foam material

: Duan, Yuxia; Huebner, Stefanie; Hassler, Ulf; Osman, Ahmad; Ibarra-Castanedo, Clemente; Maldague, Xavier P.V.


Infrared physics and technology 60 (2013), pp.275-280
ISSN: 1350-4495
Journal Article
Fraunhofer IIS ()

In this article, quantitative evaluation of optical thermographic techniques relative to the non-destructive inspection of aluminum foam material is studied. For this purpose, a set of aluminum foam specimens with flat-bottom holes (FBH) was inspected by both optical lock-in thermography (LT) and pulsed thermography (PT). Probability of detection (PoD) analysis, as a quantitative method to estimate the capability and reliability of a particular inspection technique, was studied and compared for both optical LT and PT inspection results.