composites; infrared vision; optical testing; active infrared thermography; aerospace manufacturing; detection capability; digital speckle photography; in-service inspection; integrated systems; non destructive testing; nondestructive examination; short wave infrared; composite materials; debonding; defects; holographic interferometry; optical testing
An integrated system between infrared vision and optical non-destructive testing techniques can be considered a viable, robust and reliable approach for both aerospace manufacturing and in-service inspections. In this paper, infrared vision is applied in different spectral bands on two impacted panels made of aramid–phenolic composite by applying two different methods, respectively: (1) near and short-wave infrared reflectography and transmittography, and (2) mid-wave active infrared thermography. Furthermore, optical methods, namely digital speckle photography and holographic interferometry, are used as well to highlight the damages due to the impacts on the samples. Some techniques provide more straightforward detection capabilities than others for different defect types.
Engineering Fracture Mechanics108 (7 March 2013): 195–208.