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On the Determination of Stress Intensity Factors for Cracked Thick Cylinders

Published online by Cambridge University Press:  21 February 2011

A P Parker  and
C P Andrasic
A P Parker
Affiliation:
Head of Department
C P Andrasic
Affiliation:
Research Fellow Department of Mechanical and Civil Engineering North Staffordshire Polytechnic Beaconside, Stafford. ST18 OAD. England.
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Abstract

The authors have previously published stress intensity (K) solutions for singly and multiply cracked thick cylinders with internal pressure and autofrettage stress fields. In this paper a method of obtaining K values for intermediate radii ratios is proposed. The method involves an approximate superposition procedure which models the removal (or addition) of cylinder material and is based on the nearest available radii ratio. The procedure is exact for very short crack lengths, and generally gives answers within 5% at crack lengths up to 20% of wall thickness (wherein most of the fatigue lifetime is expended) after removal of 20% of the wall thickness. A simple expression is given for the anticipated change in fatigue lifetime resulting from material removal.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 22: Symposium NY – High Pressure in Science and Technology , 1983 , 227
Copyright
Copyright © Materials Research Society 1984

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References

REFERENCES

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