2003 Volume 3 Issue 1 Pages 3-8
The characteristics and basic concepts of moiré interferometry are reviewed. Significant examples from the fields of composite materials, electronic packaging and micromechanics are presented. Data are received as fringe patterns, which are contour maps of the in-plane U and V displacement fields. The typical sensitivity is 2.4 fringes/μm displacement. Characteristics include excellent fringe visibility, high spatial resolution and very large dynamic range. Normal and shear strains can be extracted readily from the displacement fields.
