Moire photography in engineering measurement

  • C. Forno
Chapter

Abstract

By installing a slotted mask inside a camera lens its response can be tuned to resolve 300 lines/mm over the whole image field. The camera is used to record fine grid patterns applied to engineering structures and deformations are revealed as moiré fringes generated by changes in the pattern. The technique has been applied to large civil engineering structures as well as small components and automatic pattern analysis offers improved accuracy and speed.

Keywords

Moire Fringe Road Research Laboratory Local Strain Distribution Orthogonal Diffraction Grating Large Engineering Structure 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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References

  1. Burch J M and Forno C. A high sensitivity moiré grid technique for studying deformations in large objects. Opt. Engng. Ik, No 2 (1975) Pp. 179–185.Google Scholar
  2. Forno, C. Deformation measurement using high resolution moiré photography. Opt. Lasers in Eng.8(1988) Pp 189–212.Google Scholar

Copyright information

© Chapman and Hall 1990

Authors and Affiliations

  • C. Forno
    • 1
  1. 1.NPLMiddlesexUK

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