Simple and Economical Shearography System for Testing of Aeronautical Composite Material

To detecting delaminations in honeycomb structures, shearography has great capability. It is commonly used by the aerospace industries for non-destructive testing (NDT). In this paper, we describe a simple and inexpensive shearography system suitable for routine control of composite material. In particular, the system is suitable for detecting delamination deriving from impact at low-velocity (tool drop, bird-strike, runway debris, etc.).