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Fatigue of Aircraft Materials with Special Reference to Micro-Structure*

Published online by Cambridge University Press:  28 July 2016

P. L. Teed
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Extract

Of the many kinds of fatigue of materials, this paper deals only with “The fatigue of ductile metals by the imposition of cyclic stresses.” It is the purpose of the paper to show that: —

  1. (i) Metals have certain very human attributes.

  2. (ii) They have both memory and temperament.

  3. (iii) They remember with increasing resentment the stresses which have been imposed upon them.

  4. (iv) They are extremely sensitive as to the appropriate moment at which to break.

The question arises of why a piece of any ductile metal, other than a ferrous one, free from any abrupt change of section, when subjected to cyclic stresses of any magnitude, however small, ultimately breaks although the maximum stress imposed is one which, if static, it could have borne indefinitely. The answer is—mainly because of its metallographic structure.

Type
Research Article
Information
The Aeronautical Journal , Volume 56 , Issue 498 , June 1952 , pp. 427 - 437
Copyright
Copyright © Royal Aeronautical Society 1952

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Footnotes

*

Lecture read before the Bristol Branch of the Society on 2nd January 1952.

References

1. Barrett, C. S. (1943). Structure of Metals. Mc-Graw-Hill, 1943.Google Scholar