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In present communication, we report our investigations undertaken towardsdetection of defects and non-destructive evaluation of low-modulus sample ofPoly Methyl Metha Acrylate (PMMA) material using phase measuring deflectometryand windowed Fourier transform (WFT). The slope of the phase provides theinformation regarding defects and surface variation of the object. Experimentalresults conclusively establish the viability of the technique.

Defect detection and NDE of low-modulus PMMA material using mechanical loading and WFT analysis