Abstract
The authors have been developing some novel methods to measure shape, deformation,
stress and strain of structures using optical methods and image processing as follows: (1) Phase
analysis methods using Fourier, wavelet or Gabor transforms, etc., (2) Real-time 2-D strain
measurement using moiré interferometry, (3) Scanning moiré method using thinning-out of
scanning lines and a DMD camera (4) Strain rate distribution measurement by a high-speed video
camera, (5) Real-time integrated phase-shifting method, (6) Shape measurement methods using
multi-reference planes, a linear image sensor, or a frequency modulated grating, and (7) Windowed
phase-shifting digital holographic interferometry (WPSDHI). Theories of these methods and some
applications are introduced. The most accurate result is 88 picometer standard deviation of errors
using the WPSDHI.
Publisher
Trans Tech Publications, Ltd.
Subject
Mechanical Engineering,Mechanics of Materials,General Materials Science
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