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Recent Developments in 3-D-Photoelasticity and Grating Strain Measurement

  • A. Lagarde
Conference paper
Part of the International Centre for Mechanical Sciences book series (CISM, volume 403)

Abstract

In photelasticity a new implementation with CCD camera permits to obtain quickly separated isoclinic and isochromatic patterns and to plot isostatics for one plane model optically sliced.

For small a large strains, using two orthogonal gratings marked upon a plane measure base, we determine, in its plane, the rotation of the rigid solid and the (algebric values of) principal extensions. For that, an optical device works by optical diffractions without contact and at a distance. Methods to improve accuracy are noticed. A set-up permits to extend the method for locally cylindrical surface. The holographic record permits the extension of the measurement to the whole of a plane surface. For dynamic event, the grating interrogation by beam laser with angular coding gives not only strains for local measure base but also rigid motions.

Keywords

Rotatory Power Optical Diffraction Symposium IUTAM Speckle Field Small Diffraction Angle 
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. 2.1
    Rayleigh, “Sur la production et la théorie de réseaux de diffraction” Phil. Mag. 47 (81) 193-(1874).Google Scholar
  2. 2.2
    Dantu M.P., “Utilisation des réseaux pour l’étude des déformations” Annales de l’I.T.B.T.P., n° 12 (reprend une conférence du 5 mars 1957) 1958.Google Scholar
  3. 2.3
    Post D., “High Sensitivity Displacement Measurement by Moiré Interferometry” Pro. 7th. Int. Conf. Exp. Stress Analysis Haifa Israël 1982.Google Scholar
  4. 2.4
    Sciammarella C.A., “Technique of fringe interpolation in Moiré patterns” Exp. Mech., pp. 19 A-29 A 7 (11) Novembre 1967.Google Scholar
  5. 2.5
    Fu-Pen Chiang, “Techniques of optical spatial filtering applied to the processing of Moiré Fringe Patterns” Exp. Mech. pp. 525–526, November 1969.Google Scholar
  6. 2.6
    Bell J.F., 1959, “Diffraction grating strain gage” S.E.S.A. Proceeding XVIII (2) 51–64.Google Scholar
  7. 2.7
    Boone P.M., “A method for directly determining surface strain–Fields using diffraction grating” Exp. Mech. 11, Noll (1971).Google Scholar
  8. 2.8
    Sevenhuijsen P.J., 1978 “The development of a laser grating method for the measurement of strain distribution in plane, opaque surfaces, V.D.I. Berichte, N°313, pp. 143–147.Google Scholar
  9. 2.9
    Brémand F., Lagarde A., “Méthode optique de mesure des déformations utilisant le phénomène de diffraction”. C.R. A.ad. Sciences. Paris, 303, série II, 1986, p. 515–520.Google Scholar
  10. 2.10
    Brémand F., Lagarde A., “Optical Method of Strain Measurement on a Small Size Area Application” IUTAM Symposium on Yielding, Damage and Failure of Anisotropic Solids, Villars de Lans, Août 1987.Google Scholar
  11. 2.11
    Brémand F., “Photoelasticimétrie en grandes déformations. Méthodes de mesure de petites et grandes déformations”. Thèse de Doctorat de l’Université de Poitiers, 1998.Google Scholar
  12. 2.12
    Brémand F., Dupré J.C., Lagarde A., “Non contact and non disturbing local strain measurement methods I Principle”, Eur. J. Mech. A/Solids 11 n°3, pp. 349–366, 1992.Google Scholar
  13. 2.13
    Cottron M., Brémand F., Lagarde A., “Non-contact and non-disturbing local strain measurement methods II Applications”, Eur. J. Mech. A/Solids 11 n°3, pp. 367–379.Google Scholar
  14. 2.14
    Post D. “Developments in moiré interferometry” Optical Engineering p. 458–467, vol. 21, 1982.CrossRefGoogle Scholar
  15. 2.15
    Valle V., Cottron M., Lagarde A., “A new optical method for dynamic strain measurement”. 10th International Conference on Experimental Mechanics Lisbon 1994.Google Scholar
  16. 2.16
    Meva’a L., Brémand F., Lagarde A., “Optical methods of strain measurement of cylindrical specimen submitted to uniaxial load”. 10th International Conference on Experimental Mechanics Lisbon 1994.Google Scholar
  17. 2.17
    Cloud G.L., “Optical methods of engineering analysis” Cambridge University Press, pp. 447–491.Google Scholar
  18. 2.18
    Dupré J.C., Cottron M., Lagarde A., “Phase shifting technique for local measurement of small strains by grid method”. Proc. 10th International Conference of Experimental Mechanical Lisbon, 1994.Google Scholar
  19. 2.19
    Creath K, (1988) “Phase measurement interferometry methods”. In progress in Optics XXVI, Ed. E. Wolf, pp. 349–93. Amsterdam: Elsevier Science Publishers.CrossRefGoogle Scholar
  20. 2.20
    Wyant J.C., (1982) “Interferometric optical metrology, basic systems and principles”. Laser Focus, May 1982: 65–71.Google Scholar
  21. 2.21
    Carré P. (1996) “Installation et ’ utilisation du comparateur photoélectrique et interférentiel du Bureau International des Poids et Mesures; Metrologia, 2, 1: 13–23.Google Scholar
  22. 2.22
    Rajaona D.R., Sulmont P., “A method of spectral analysis applied to periodic and pseudo-periodic signals”, Jour. Comput. P.ys., Vol. 61, n°1, pp. 186–193, October 1985.Google Scholar
  23. 2.23
    Dupré J.C., “Traitement et analyse d’images pour la mesure de grandeurs cinématiques, déplacements et déformations à partir de la granularité laser et de réseaux croisés, et pour l’étude de couplage thermomécaniques”. Thèse de Doctorat de l’Université de Poitiers, 1992.Google Scholar
  24. 2.24
    Dupré J.C., Lagarde A., “Optical method of the measurement at distance of local strains”, XVlllth International Congress of Theoretical and Applied Mechanics, Haïfa, Israël, August 22–28, 1992.Google Scholar
  25. 2.25
    Dupré J.C., Cottron M., Lagarde A., “Méthode indépendante des petites translations de l’objet, pour la mesure locale et à distance avec quasihétérodynage de l’état de déformations”, C.R. A.ad. Sci. Paris, Tome 315, Série II, n°4, pp. 393–398, 1992.Google Scholar
  26. 2.26
    Wang S.B., Cottron M., Lagarde A, “An holographic grid technic for a whole strain measurement and application to elastoplastic structure”. 10th International Conference on Experimental Mechanics Lisbon 1994.Google Scholar
  27. 2.27
    Wang S.B., Méthode optique de mesure de déformations à champ complet associant holographie et analyse numérique de réseaux. Application à la mécanique de la rupture“. Thèse de Doctorat de l’Université de Poitiers, 1994.Google Scholar
  28. 2.28
    Dadkhah M.S., Kobayashi A.S., “Further studies on the H.R.R. field of a moving crack, an experimental analysis”. Int. Journal of Plasticity, vol. 6, pp. 635–650., 1990.Google Scholar
  29. 2.29
    Valle V., “Développement et mise en oeuvre d’une méthode optique de mesure locales des déformations en dynamique” Thèse de Doctorat de l’Université de Poitiers, 1994.Google Scholar
  30. 2.30
    Valle V, Cottron M., Lagarde A., “High speed local strain determination from grating diffraction” Symposium IUTAM “Advanced Optical Methods and Applications in Solids Mechanics”, Poitiers August 31 — September 4, 1998, Kluver academic publishers.Google Scholar
  31. 2.31
    Meva’a L., “Méthodes optiques de mesure à distance des déformations, sur éprouvettes planes à température de figeage et sur éprouvettes cylindriques pour des essais de traction”. Thèse de Doctorat de l’Université de Poitiers, 1994.Google Scholar
  32. 2.32
    Belmahjoub F., “Comportement thermomécanique de matériaux métalliques sous divers trajets de chargement uniaxe”, Thèse de Doctorat, Université de Montpellier I I, 1990.Google Scholar

Copyright information

© Springer-Verlag Wien 2000

Authors and Affiliations

  • A. Lagarde
    • 1
  1. 1.University of PoitiersPoitiersFrance

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