Abstract
An experimental technique is presented for measuring the heat dissipation and localization during cyclic loading of materials. The temperature field is measured by a number of thermistors and an infrared camera, which scans the specimen surface continuously. The specimen is mounted inside an isothermal chamber. The measured whole-field temperature can be used for detection of damage propagation and localization. The resolution of the technique under various boundary conditions is discussed using a onedimensional model for the heat loss under steady-state conditions. Applications of the technique are demonstrated for specimens made of fiber-reinforced ceramic and polymer matrix composites (PMCs). A methodology is proposed for measuring changes in damping and stiffness properties of viscoelastic polymer matrix composites using the temperature rise of a cyclic loaded specimen. It is demonstrated that for a ceramic matrix composite, where interfacial frictional sliding gives rise to heat dissipation, the temperature resolution can be used for detection of stress-strain hysteresis with an accuracy better than that of the stress-strain data.
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References
Wong, A.K. andKirby, G.C., “A Hybrid Numerical/Experimental Technique for Determining the Heat Dissipated During Low Cycle Fatigue,”Eng. Fract. Mech.,37,493–504 (1990).
Lemaitre, J. andChaboche, J.-L., Mechanics of Solid Materials, Cambridge University Press, Cambridge (1990).
Holmes, J.W. andSchuler, S.F., “Temperature Rise During Fatigue of Fibre-reinforced Ceramics,”J. Mat. Sci. Let.,9,1290–1291 (1990).
Cho, C., Holmes, J.W., andBarber, J.R., “Estimation of Interfacial Shear in Ceramic Composites from Frictional Heating Measurements,”J. Am. Ceram. Soc.,74,2802–2808 (1991).
Lindhagen, J.E. andBerglund, L.A., “Temperature Changes in Polymer Composites During Tensile Loading,”J. Mat. Sci.,32,4071–4076 (1997).
Reifsnider, K.L. andWilliams, R.S., “Determination of Fatigue-related Heat Emission in Composite Materials,”Experimental Mechanics,14,479–485 (1974).
Kline, R.A., “The Origin of Localized Weak Areas in SMC Composites,”Mat. Eval.,40,874–879 (1982).
Bond, L.J., Aftab, N., Clayton, B.R., Dutton, A.G., Irving, A.D., andLipman, N.H., “Condition Monitoring Techniques for Composite Wind Turbine Blades,”Rev. Progress Quantitative Nondestructive Eval.,11,1647–1654 (1992).
Sandor, B.I., Lohr, D.T., andSchmid, K.C., “Nondestructive Testing Using Differential Infrared Thermography,”Mat. Eval.,45,392–395 (1987).
Holmes, J.W., “A Technique for Tensile Fatigue and Creep Testing of Fiber-reinforced Ceramics,”J. Comp. Mat.,26,915–932 (1992).
Holman, J.P., Heat Transfer, 7th ed., McGraw-Hill, New York (1992).
Jacobsen, T.K., Sørensen, B.F., andBrøndsted, P., “Fatigue and Frictional Heating in Ceramic Matrix Composites,”Key Eng. Mat., 127–131, 745–752 (1997).
Oliver, D.E., “Stress Pattern Analysis by Thermal Emission,”Handbook on Experimental Mechanics, ed. A.S. Kobayashi, Prentice Hall, Englewood Cliffs, NJ (1987).
Andersen, S.I., Brøndsted, P., Jørgensen, O., and Lilholt, H., “Damping Properties of Polymers and Polymeric Composites for Wingblades,” European Union Wind Energy Conference and Exhibition, Paper No. P16.7, May 20–24, Göteborg, 1–6 (1996).
Zinoviev, P.A. and Ermakov, Y.N., Energy Dissipation in Composite Materials, Technomic (1994).
Jacobsen, T.K., “The Influence of Holes and Notches on the Fatigue Behavior of 2-D Woven Ceramic Matrix Composites,”Ph.D. thesis, Risø National Laboratory, Risø-R-994(EN), ISBN 87-550-2318-5 (1997).
Evans, A.G. andZok, F.W., “Review, the Physics and Mechanics of Fibre-reinforced Brittle Matrix Composites,”J. Mat. Sci.,29,3857–3896 (1994).
Hutchinson, J.W. andJensen, H.M., “Models of Fiber Debonding and Pullout in Brittle Composites with Friction,”Mech. Mat.,9,139–163 (1990).
Vagaggini, E., Domerque, J.M., andEvans, A.G., “Relationships Between Hysteresis Measurements and the Constituent Properties of Ceramic Matrix Composites 1. Theory,”J. Am. Ceram. Soc.,78,2709–2720 (1995).
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Jacobsen, T.K., Sørensen, B.F. & Brøndsted, P. Measurement of uniform and localized heat dissipation induced by cyclic loading. Experimental Mechanics 38, 289–294 (1998). https://doi.org/10.1007/BF02410391
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DOI: https://doi.org/10.1007/BF02410391