Abstract
The method is suggested for calculating cyclic temperature fields heated by passing an electric current and cooled by compressed air on the basis of solving the problem of nonsteady state thermal conductivity for a rod with internal heat sources, second order asymmetrical boundary conditions, and nonuniform initial conditions. A method and equipment have been developed for contactless measurement of temperature fields for a specimen by means of a scanning photoresistor, a two-coordinate electronic storage oscillograph, and a photographic attachment. Results of calculating cyclic temperature fields by the suggested method are compared with those obtained by experimental data.
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Literature Cited
L. P. Lozitskii, N. A. Koveshnikov, and V. A. Leshchenko, “Equipment for testing materials for thermal fatigue and thermal strength under conditions of programmed thermal and mechanical loading,” Samoletostr. Tekh. Vozdushn. Flota, No. 22, 75–80 (1970).
A. V. Lykov, Theory of Thermal Conductivity [in Russian], Vysshaya Shkola, Moscow (1967).
Additional information
60th Year of the USSR Institute of Civil Aviation Engineering, Kiev. Translated from Problemy Prochnosti, No. 9, pp. 36–41, September, 1989.
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Vetrov, N.A., Koveshnikov, N.A. & Kucher, A.G. Study of cyclic temperature fields in specimens tested for thermal fatigue. Strength Mater 21, 1163–1168 (1989). https://doi.org/10.1007/BF01529290
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DOI: https://doi.org/10.1007/BF01529290