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Phase-shifting interferometry with feedback control using heterodyne phase detection

โœ Scribed by Bitou, Youichi

Book ID
115430927
Publisher
Optical Society of America
Year
2008
Tongue
English
Weight
467 KB
Volume
33
Category
Article
ISSN
0146-9592

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Detection of internal defects using phas
Detection of internal defects using phase shifting holographic interferometry
โœ Avi Twitto; Joseph Shamir; Alexander Bekker; Amos Notea ๐Ÿ“‚ Article ๐Ÿ“… 1996 ๐Ÿ› Elsevier Science ๐ŸŒ English โš– 769 KB

Phase shifting holographic interferometry is shown to be a useful tool for detection of internal defects in materials by observing strain anomalies in a stressed object. The postrecording signal processing includes smoothing of the measured deformation by means of data polynomial fitting, a derivati