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

TL;DR

This paper demonstrates a method combining phase measuring deflectometry and WFT analysis for defect detection and non-destructive evaluation of low-modulus PMMA materials, showing promising experimental results.

Contribution

It introduces a novel approach integrating phase deflectometry with WFT for defect detection in low-modulus polymers, validated through experiments.

Findings

Effective detection of surface defects in PMMA using phase slope analysis.

WFT analysis enhances defect localization accuracy.

Experimental results confirm the method's viability.

Abstract

In present communication, we report our investigations undertaken towards detection of defects and non-destructive evaluation of low-modulus sample of Poly Methyl Metha Acrylate (PMMA) material using phase measuring deflectometry and windowed Fourier transform (WFT). The slope of the phase provides the information regarding defects and surface variation of the object. Experimental results conclusively establish the viability of the technique.