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Study of short term creep in fast air flows, allowing for the variable loads arising from vibrations

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Strength of Materials Aims and scope

Conclusions

  1. 1.

    An increase in the air-flow velocity from M=0.94 to M=1.6 for the OT4 alloy at 500°C and from M=0.7 to M=1.6 for the VZh98 alloy at 1000°C accelerates creep and shortens the total time-to-failure as a result of an intensification of the corrosion-erosion action of the flow. The degree of deformation at the point of failure diminishes by a factor of 2 to 2.5 as compared with tests in still air.

  2. 2.

    An increase in the angle of attack at a constant air-flow velocity (M=0.94) for these alloys accelerates the creep rate as a result of an increase in the average statistical value of the dynamic stress component.

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Literature Cited

  1. Fatigue of Aircraft Structures [in Russian], Oborongiz, Moscow (1961).

  2. D. V. Vainberg and G. S. Pisarenko, Mechanical Vibrations and Their Role in Technology [in Russian], Nauka, Moscow (1969).

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  3. A. I. Gudkov, P. S. Leshakov, and L. G. Raikov, External Loads and Strength of Aircraft [in Russian], Oborongiz, Moscow (1963).

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  4. N. E. Kochin, I. A. Kibel', and N. V. Roze, Theoretical Hydromechanics [in Russian], Gostekhizdat, Moscow (1948).

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  5. L. Ya. Nesgovorov and V. I. Prosvirin, Dokl. Akad. Nauk SSSR,138 (1961).

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Authors
  1. Yu. G. Veksler
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  2. V. G. Sorokin
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  3. S. Ya. Paleeva
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Additional information

Ural Polytechnic Institute, Sverdlovsk. Translated from Problemy Prochnosti, No. 11, pp. 74–77, November, 1970.

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Veksler, Y.G., Sorokin, V.G. & Paleeva, S.Y. Study of short term creep in fast air flows, allowing for the variable loads arising from vibrations. Strength Mater 2, 1168–1171 (1970). https://doi.org/10.1007/BF01527779

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  • DOI: https://doi.org/10.1007/BF01527779

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