Skip to main content
Log in

Full-field automatic evaluation of an isoclinic parameter in white light

  • Published:
Experimental Mechanics Aims and scope Submit manuscript

Abstract

In this paper, a technique for full-field evaluation of the isoclinic parameter is presented. It combines the phase-shifting method with true color imaging technology to minimize the interaction between isoclinic and isochromatic fringes. The paper also shows how the proposed technique can be suitably integrated with known methods for evaluating the retardations. Furthermore, a digital algorithm for filtering wrapped phase data obtained by general phase-shifting techniques is presented.

This is a preview of subscription content, log in via an institution to check access.

Access this article

Price excludes VAT (USA)
Tax calculation will be finalised during checkout.

Instant access to the full article PDF.

Similar content being viewed by others

References

  1. Segugi, Y., Tomita, Y., andWatanabe, M., “Computed-aided Fringe Pattern Analyzer: A Case of Photoelastic Fringes,” EXPERIMENTAL MECHANICS,12(10),362–370 (1979).

    Google Scholar 

  2. Zhang, F., Su Ming, Z., andChen B., “A Digital Image Processing System for Photoelastic Stress Analysis,”Photomechanics and Speckle Metrology, SPIE814,806–809 (1987).

    Google Scholar 

  3. Umezaki, E., Tamaki, T., andTakahashi, S., “Automatic Stress Analysis of Photoelastic Experiments by Use of Image Processing,”Exp. Tech.,13(12),22–27 (1989).

    Google Scholar 

  4. Mahzuf, H., Wong, T., and Case, R.O., “Photoelastic Data Acquisition by the Digitizing Technique over Arbitrary Boundaries,” Proc. SEM Spring Conf. Exp. Mech., Albuquerque, 658–664 (1990).

  5. Yao, J.Y., “Extracting Isoclinics Using Image Processing Techniques,”Exp. Tech.,11(10),30–31 (1987).

    Google Scholar 

  6. Morimoto, Y., Morimoto, Y. Jr., andHayashi, T., “Separation of Isochromatics and Isoclinics Using Fourier Transform,”Exp. Tech.,18(5),13–17 (1994).

    Google Scholar 

  7. Brown, G.M. andSullivan, J.L., “The Computer-aided Holophotoelastic Method,” EXPERIMENTAL MECHANICS,30(2),135–144 (1990).

    Google Scholar 

  8. Mawatari, S., Takashi, M., Toyada, Y., andKunio, T., “A Single Valued Representative Function for Determination of Principal Stress Direction in Photoelastic Analysis,”Proc. 9th Int. Conf. Exp. Mech.,5,Copenhagen,2069–2078 (1990).

    Google Scholar 

  9. Patterson, E.A. andWang, Z.F., “Towards Full Field Automated Photoelastic Analysis of Complex Components,”Strain 27(2),49–56 (1991).

    Google Scholar 

  10. Patterson, E.A., “Application of Phase Stepping in Photoelasticity to Composite Materials,” Proc. Exp. Tech. Design Composite Mater., Cagliari, 335–348 (1992).

  11. Haake, S.J., Patterson, E.A., andWang, Z.F., “Evaluation of Full Field Automated Photoelastic Analysis Based on Phase Stepping,”Exp. Tech.,17(6),19–25 (1993).

    Google Scholar 

  12. Carazo-Alvarez, J., Haake, S.J., andPatterson, E.A., “Completely Automated Photoelastic Fringe Analysis,”Opt. Lasers Eng.,21,133–149 (1994).

    Article  Google Scholar 

  13. Sarma, A.V.S.S.S.R., Pillai, S.A., Subramanian, G., andVaradan, T.V., “Computerized Image Processing for Whole Field Determination of Isoclinics and Isochromatics,” EXPERIMENTAL MECHANICS,32(1),24–29 (1992).

    Google Scholar 

  14. Dupre, J.C., Bremande, F., and Lagarde, A., “Photoelastic Data Processing Through Digital Image Processing: Isostatics and Isochromatics Reconstruction,” Int. Conf. Photoelasticity: New Instrumentation, Materials and Data Processing Techniques, London (1993).

  15. Kihara, T., “Automatic Whole-field Measurement of Photoelasticity Using Lienar Polarized Incident Light,”Proc. 9th Int. Conf. Exp. Mech.,2,Copenhagen,821–827 (1990).

    Google Scholar 

  16. Wang, Z.F. andPatterson, E.A.Use of Phase-stepping with Demodulation and Fuzzy Sets for Birefringence Measurement,”Opt. Lasers Eng.,22,91–104 (1995).

    Google Scholar 

  17. Kihara, T., “Automatic Whole-field Measurement of Principal Stress Directions Using Three Wavelengths,”Proc. 10th Int. Conf. Exp. Mech.,1,Lisbon,95–99 (1994).

    Google Scholar 

  18. Hecker, F.W. and Morche, B., “Computer-aided Measurement of Relative Retardations in Plane Photoelasticity,” Experimental Stress Analysis, H. Wieringa, ed., Martinus Nijhoff, 535–542 (1986).

  19. Ajovalasit, A. and Petrucci, G., “Analisi Automatica delle frange fotoelastische in luce bianca,” Proc. 18th AIAS Conf., Institute of Mechanical Engineering, University of Salerno, 395–407 (1990).

  20. Petrucci, G., “Un sistema completo per l'elaborazione delle frange fotoelastiche in luce bianca,” Proc. 20th AIAS Conf., Department of mechanics and Aeronautics, University of Palermo, 121–135 (1991).

  21. Ajovalasit, A., Barone, S., andPetrucci, G.Automated Photoelasticity in White Light: Influence of Quarter-wave Plates,”J. Strain Analysis,30(1),29–34 (1995).

    Google Scholar 

  22. Ajovalasit, A., Barone, S., andPetrucci, G., “Toward RGB Photoelasticity: Full Field Automated Photoelasticity in White Light,” EXPERIMENTAL MECHANICS,35(3),193–200 (1995).

    Google Scholar 

  23. Pratt, W.K., Digital Image Processing, John Wiley, New York (1978).

    Google Scholar 

  24. Huang, T.S., Yang, G.J., andTang, G.Y., “A Fast Two-dimensional Median Filtering Algorithm,”Selected Paper on Digital Image Processing, SPIE Milestones Series, MS17,589–594 (1990).

    Google Scholar 

Download references

Author information

Authors and Affiliations

Authors

Rights and permissions

Reprints and permissions

About this article

Cite this article

Petrucci, G. Full-field automatic evaluation of an isoclinic parameter in white light. Experimental Mechanics 37, 420–426 (1997). https://doi.org/10.1007/BF02317308

Download citation

  • Received:

  • Issue Date:

  • DOI: https://doi.org/10.1007/BF02317308

Keywords

Navigation