Polymer Mechanics

, Volume 1, Issue 1, pp 87–89 | Cite as

Effect of liquid media on fatigue strength of polyamides

  • S. B. Ratner
  • N. I. Barash


The results of an experimental study of polyamide fatigue strength are presented. Multiple flexing tests were performed on specimens rotating at 3000 cycles/min with a symmetrical load cycle in various media, including air (with and without blowing), volatile liquids (petroleum ether, ethanol, water), glycerin, and transformer oil. Fatigue strength is determined from (σN — log N) curves for 106 cycles. Dissipation of heat is found to be the main factor determining the effect of slightly aggressive media on fatigue strength. Values of the ratio fatigue strength/static strength (coefficient K) are presented.


Ether Fatigue Glycerin Petroleum Experimental Study 


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    S. B. Ratner, A. V. Stinskas, and Yu. G. Gil'gendorf, Plast. massy, 9, 1960.Google Scholar
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    A. V. Stinskas, Candidate's thesis, Karpov Physiocochemical Inst., Moscow, 1963.Google Scholar
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    Yu. F. Klimchuk, Report to 2nd All-Union Conference on the Use of Plastics in Machine Building, Riga, 1964.Google Scholar
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    L. N. Arsen'eva, Candidate's thesis, Gubkin Petroleum Chemistry Inst., Moscow, 1964.Google Scholar

Copyright information

© The Faraday Press, Inc 1965

Authors and Affiliations

  • S. B. Ratner
    • 1
  • N. I. Barash
    • 1
  1. 1.Moscow

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