Abstract
The combined use of thermoelastic stress analysis and full-field reflection photoelasticity based on the phase-stepping technique has been developed for twodimensional problems. The first method determines the sum of the principal stresses, the latter evaluates the difference of the principal stresses. Thus the principal stresses were separated at each point in the field of view without reference to neighboring points. An evaluation of this approach has been performed using a tensile plate with a central circular hole. The results show that the analysis carried out combining thermo- and photoelasticity incurred errors no larger than those of each system working independently.
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References
Stanley, P. andChan, W.K., “Quantitative Stress Analysis by Means of the Thermoelastic Effect”,J. Strain Analysis,20 (3),129–137, (1985).
Oliver, D.E., “Stress Pattern Analysis by Thermal Emission (SPATE)”,Handbook of Experimental Mechanics, ed. A.S. Kobayashi, Prentice Hall, Englewood Cliffs, NJ, Chap. 14 (1986).
Carazo-Alvarez, J., Haake, S.J. andPatterson, E.A., “Completely Automated Photoelastic Fringe Analysis”,Optics & Lasers in Eng.,21,133–149 (1994).
Haake, S.J., Patterson, E.A. andWang, Z.F., “Evaluation of Full Field Automated Photoelastic Analysis Based on Phase Stepping”,Experimental Techniques,17 (6),19–25 (1993).
Quan, P., Bryanston-Cross, P.J. andJudge, T.R., “Photoelastic Stress Analysis Using Carrier Fringe and FFT Techniques”,Optics & Lasers in Eng.,18,79–108 (1993).
Morimoto, Y., Morimoto, Y., Jr. and Hayashi, T., “Separation of Isochromatics and Isoclinics Using Fourier Transform and Its Accuracy”, Proc. SEM Spring Conf., 1149–1158 (1993).
Patterson, E.A., “Application of Phase Stepping in Photoelasticity to Composite Materials”, Proc. of Experimental Techniques and Design in Composite Materials, 335–348 (1992).
Huang, Y.M., AbdelMohsen, H.H., Lohr, D., Feng, Z, Rowlands, R.E. and Stanley, P., “Determination of Individual Stresses Components from SPATE Isopachic Only”, Proc. 6th Int. Cong. on Exp. Mech., 578–584 (June 1988).
Stanley, P., “Stress Separation from SPATE Data for a Rotationally Symmetrical Pressure Vessel”, SPIE 1084, Stress and Vibration: Recent Developments in Industrial Measurement and Analysis, London, 72–83 (1989).
Huang, Y.M., AbdelMohsen, H.H. andRowlands, R.E., “Determination of Individual Stresses Thermoelastically”,Experimental Mechanics,30 (1),88–94 (1990).
Huang, Y.M., Rowlands, R.E. andLesniak, J.R., “Simultaneous Stress Separation, Smoothing of Measured Thermoelastic Isopachic Information and Enhanced Boundary Data”,Experimental Mechanics,30 (4),398–404 (1990).
Haake, S.J. andPatterson, E.A., “The Determination of Principal Stresses from Photoelastic Data”,Strain,28 (4)153–158 (1992).
Zandman, F., Redner, S. andDally, J.W., “Photoelastic Coatings”,SESA Monograph, No. 3, Ames, Iowa State University Press (1977).
Ometron Ltd., SPATE 8000 Manual, Chislehurst, Kent (1983).
Savin, G.N., Stress Concentration around Holes, New York, London, Pergamon Press (1961).
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Barone, S., Patterson, E.A. Full-field separation of principal stresses by combined thermo- and photoelasticity. Experimental Mechanics 36, 318–324 (1996). https://doi.org/10.1007/BF02328573
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DOI: https://doi.org/10.1007/BF02328573