Experimental Mechanics

, Volume 32, Issue 3, pp 266–272 | Cite as

Photoelastic analysis of frozen stressed specimens using spectral-contents analysis

  • S. J. Haake
  • E. A. Patterson
Article

Abstract

The complete birefringence, or isochromatic fringe order, in stress-frozen photoelastic models has been found by measuring the spectral contents of idividual points. A calibration procedure is porposed. The effects of nonuniform birefringence and dispersion of birefringence are considered. The results are presented from the analysis of models of a plate with a central hole and a disk subject to three radial loads.

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

References

  1. 1.
    Voloshin, A.S. andBurger, C.P., “Half-fringe Photoelasticity—A New Approach to Whole-field Analysis,”Experimental Mechanics,23,304–314 (1983).CrossRefGoogle Scholar
  2. 2.
    Brown, G.M. andSullivan, J.L., “The Computer-aided Holophotoelastic Method,Experimental Mechanics,30,135–144 (1990).Google Scholar
  3. 3.
    Patterson, E.A. andWang, Z.F., “Towards Full Field Automated Photoelastic Analysis of Complex Components,”Strain,27,49–53 (1991).Google Scholar
  4. 4.
    Allison, I.M. and Nurse, P., “Automatic Acquisition of Photoelastic Data,” Proc. JBCSA Conf. on the Recording and Interpretation of Engineering Measurements, Inst. Mar. Engrs., London, 203–207 (1972).Google Scholar
  5. 5.
    Redner, A.S., “A New Automatic Polariscope System,”Experimental Mechanics,14,486–491 (1974).Google Scholar
  6. 6.
    Fessler, H., Marston, R.E. andOllerton, E., “A Micropolariscope for Automatic Stress AnalysisJ. Strain Analysis,22, (1),25–35 (1987).Google Scholar
  7. 7.
    Redner, A.S., “Photoelastic Measurement by Means of Computer-Assisted Spectral-Contents Analysis,“ Proc. 5th Int. Conf. on Exp. Mech., Montreal, 421–427 (1984).Google Scholar
  8. 8.
    Voloshin, A.S. andRedner, A.S., “Automated Measurement of Birefringence: Development and Experimental Evaluation of the Techniques,”Experimental Mechanics,29,252–257 (1989).Google Scholar
  9. 9.
    Sanford, R.J. and Iyengar, V., “The Measurement of the Complete Photoelastic Fringe Order using a Spectral Scanner,” Proc. 1985 SEM Spring Conf. on Exp. Mech., 160–168 (1985).Google Scholar
  10. 10.
    Sanford, R.J., “On the Range and Accuracy of Spectrally Scanned White Light Photoelasticity,” Proc. 1986 SEM Spring Conf. on Exp. Mech., 901–908 (1986).Google Scholar
  11. 11.
    Iyengar, V., “New Method for Birefringence Measurement Using a Spectral Scanner,” MS Thesis, Univ. of Maryland (Aug. 1984).Google Scholar
  12. 12.
    Baud, R.V., “Contribution to Study of Effect of Elliptical; Polarization upon Energy Transmission,”J.O.S.A.,21,119–123 (1931).Google Scholar
  13. 13.
    Sanford, R.J. and McGinnis, A., “New Method for Measuring Low Level Birefringence Using a Spectral Scanner,” Proc. 37th Int. Instr. Symp., San Diego (May 1991).Google Scholar
  14. 14.
    Pindera, J.T. andCloud, G., “On Dispersion of Birefringence of Photoelastic Materials,”Experimental Mechanics,6, (9)470–480 (1966).CrossRefGoogle Scholar
  15. 15.
    Frocht, M.M., Photoelasticity, Vol. 1, John Wile and Sons, Inc., New York (1941 and 1948).Google Scholar
  16. 16.
    Press, W.H., Flannery, B.P., Tenkolsky, S.A. and Vetterling, W.T., Numerical Recipes in Pascal—The Art of Scientific Computing, Cambridge Univ. Press (1990).Google Scholar
  17. 17.
    Allison, I.M., “Computation and Interpretation of Photoelastic Test Data,”Applied Solid Mechanics 3, ed, I.M. Allison andC. Ruiz, Elsevier Applied Sciences, London, 258–268 (1989).Google Scholar
  18. 18.
    Marwitz, H., Kizler, W. and Schuster, XX, “Improved Efficiency In Photoelastic Coatings. Fast Detection of Fringe Order Using Computer Controlled Spectrometry,” Proc. 9th Int. Conf. Exp. Mech., Copenhagen, 828–838 (1990).Google Scholar

Copyright information

© Society for Experimental Mechanics, Inc. 1992

Authors and Affiliations

  • S. J. Haake
    • 1
  • E. A. Patterson
    • 1
  1. 1.Department of Mechanical and Process EngineeringUniversity of SheffieldSheffieldEngland

Personalised recommendations