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Optics Letters

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  • Vol. 22, Iss. 7 — Apr. 1, 1997
  • pp: 427–429

Optical method of determination of stress at a point

R. N. Chakraborty, S. K. Sarkar, and A. Basuray  »View Author Affiliations


Optics Letters, Vol. 22, Issue 7, pp. 427-429 (1997)
http://dx.doi.org/10.1364/OL.22.000427


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Abstract

A method of determining stress at a point is suggested here. The effect of bending of a wave front that is due to variations of the refractive index is used to measure different aspects of stresses. A Fourier lens with a cross slit at its front focal plane is used to form interference fringes at planes near its back focal plane. The sample, illuminated by a plane-parallel coherent beam of light, is placed close to a cross slit, and the change in fringe pattern due to axial shift of the spectrum planes of the slits is measured to relate it to the state of stress.

© 1997 Optical Society of America

Citation
R. N. Chakraborty, S. K. Sarkar, and A. Basuray, "Optical method of determination of stress at a point," Opt. Lett. 22, 427-429 (1997)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-22-7-427


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References

  1. J. W. Dally and W. F. Riley, Experimental Stress Analysis (McGraw-Hill, New York, 1978), Chap. 1, pp. 16–17.
  2. J. W. Goodman, Introduction to Fourier Optics (McGraw-Hill, New York, 1968), Chap. 4, p. 62.
  3. J. C. Maxwell, in The Scientific Papers of James Clerk Maxwell, W. D. Niven, ed. (Dover, New York, 1965), Vol. 1, p. 68.
  4. R. J. Standford, J. Exp. Mechan. 20, 427 (1980).
  5. L. Pirodda, in Optical Metrology, O. D. D. Soares, ed., Vol. 131 of Applied Sciences: Series E (Martinus Nijhoff, Dordrecht, The Netherlands, 1987), pp. 223–241.
  6. S. K. Bhadra, S. K. Sarkar, R. N. Chakraborty, and A. Basuray, J. Opt. Eng. 33, 3359 (1994).
  7. S. K. Bhadra, R. N. Chakraborty, K. Sengupta, S. K. Sarkar, and A. Basuray, J. Mod. Opt. 43, 2009 (1996).

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