Optical Interference for Deformation Measurements--Classical, Holographic and Moiré Interferometry

  • Daniel Post


Interferometry is a powerful tool. It enables measurements of surface topography, dimensional changes and deformations of solid bodies, all in the sub-wavelength sensitivity range. This article is a tutorial treatment of the subject. Its purpose is to introduce modern interferometric techniques of engineering measurements; and to explain them in sufficient detail to generate a comfortable association with the subject. Ultimately, the mission is to foster understanding and appreciation in order to inspire increased utilization and further development.


Wave Train Fringe Pattern Diffraction Order Deformation Measurement Photographic Plate 
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  1. 1.
    J. Guild, The Interference System of Crossed Diffraction Gratings, Clarendon Press, Oxford, 1956.Google Scholar
  2. 2.
    D. Post, “Moiré Fringe Multiplication with a Nonsymmetrical Doubly Blazed Reference Grating,” Applied Optics, Vol. 10, pp. 901–7 (1971).CrossRefGoogle Scholar
  3. 3.
    C. A. Walker and J. McKelvie, “A Pratical Multiplied-Moiré System,” Experimental Mechanics, Vol. 35, pp. 316–320 (August 1978).CrossRefGoogle Scholar

Copyright information

© Plenum Press, New York 1980

Authors and Affiliations

  • Daniel Post
    • 1
  1. 1.Virginia Polytechnic Institute and State UniversityBlacksburgUSA

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