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Effect of Yielding on the Fatigue Properties of Test Pieces Containing Stress Concentrations

Published online by Cambridge University Press:  07 June 2016

K. Gunn
K. Gunn*
Affiliation:
Aluminium Laboratories, Banbury
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Summary

A method of estimating the fatigue properties of notched test pieces when cyclic loads are applied in the presence of mean stresses is described. The method takes into account the local yielding which occurs near the base of the notch when the nominal stresses are sufficiently high. The general form of the predicted R/M diagrams closely resembles those obtained experimentally in previously published work.

Type
Research Article
Information
Aeronautical Quarterly , Volume 6 , Issue 4 , November 1955 , pp. 277 - 294
Copyright
Copyright © Royal Aeronautical Society. 1955

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References

1. Hardrath, and Ohman, . A Study of Elastic and Plastic Stress Concentration Factors due to Notches and Fillets in Flat Plates. N.A.C.A. Report 1117.Google Scholar
2. Lazan, and Blatherwick, . Strength Properties of Rolled Aluminium Alloys under Various Combinations of Alternating and Mean Axial Fatigue Stresses. A.S.T.M. Preprint No. 74, 1953.Google Scholar
3. Wållgren, . Direct Fatigue Tests with Tensile and Compressive Mean Stresses on 24ST Aluminium Plain Specimens and Specimens Notched by a Drilled Hole. Flygtekniska Försöksanstalten FFA Meddelande Nr. 48, 1953.Google Scholar
4. Peterson, . Methods of Correlating Data from Fatigue Tests of Stress Concentration Specimens. Stephen Timoshenko, 60th Anniversary Volume. Macmillan, 1938.Google Scholar