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Optics Letters

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  • Vol. 14, Iss. 4 — Feb. 15, 1989
  • pp: 193–195

Direct determination of strain with diffraction-limit accuracy by moiré deflectometry

Oded Kafri, Eliezer Keren, and Kathi M. Kreske  »View Author Affiliations


Optics Letters, Vol. 14, Issue 4, pp. 193-195 (1989)
http://dx.doi.org/10.1364/OL.14.000193


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Abstract

In-plane strain is traditionally mapped by fixing a grating onto a test object and monitoring its displacements under stress by either a moiré method or interferometry. The strain (or displacement derivative) is obtained by an additional mathematical or moiré shearing technique. We suggest an application of moiré deflectometry that will yield the strain directly. The setup is much simpler than existing methods and has the additional advantages of tunable sensitivity and immunity to mechanical shock and vibration.

© 1989 Optical Society of America

History
Original Manuscript: March 8, 1988
Manuscript Accepted: November 30, 1988
Published: February 15, 1989

Citation
Oded Kafri, Eliezer Keren, and Kathi M. Kreske, "Direct determination of strain with diffraction-limit accuracy by moiré deflectometry," Opt. Lett. 14, 193-195 (1989)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-14-4-193


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References

  1. P. S. Theocaris, Moiré Fringes in Strain Analysis (Pergamon, London, 1969).
  2. A. J. Durelli, V. J. Parks, Moiré Analysis of Strain (Prentice-Hall, Englewood Cliffs, N.J., 1970).
  3. D. Post, Opt. Eng. 21, 458 (1982).
  4. E. M. Weisman, D. Post, Appl. Opt. 21, 1621 (1982). [CrossRef]
  5. O. Kafri, Opt. Lett. 5, 555 (1980). [CrossRef] [PubMed]
  6. O. Kafri, I. Glatt, Opt. Eng. 24, 944 (1986).
  7. K. Patorski, D. Post, R. Czarmek, Y. Guo, Appl. Opt. 26, 1977 (1987). [CrossRef] [PubMed]
  8. O. Kafri, J. Krasinski, Appl. Opt. 24, 2746 (1985). [CrossRef]
  9. O. Kafri, I. Glatt, Appl. Opt. 27, 351 (1988). [CrossRef] [PubMed]

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