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Stress Measurements on Cold-Worked Fastener Holes

Published online by Cambridge University Press:  06 March 2019

G. Dietrich  and
J. M. Potter
G. Dietrich
Affiliation:
Air Force Flight Dynamics Laboratory Wright-Patterson Air Force Base, Ohio 45433
J. M. Potter
Affiliation:
Air Force Flight Dynamics Laboratory Wright-Patterson Air Force Base, Ohio 45433
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Abstract

Magnitude and distribution of residual stresses around cold-worked holes in 1045 steel were measured with the Fastress automatic stress X-ray analyzer. Permanent interferences between 0.8% and 6.2% at a hole with 0.5 in. diameter produced compressive hoop and radial stresses up to -60 ksi and -40 ksi respectively. The size of the zone with compressive stress is significantly wider than existing analysis predicts.

Type
X-Ray Diffraction Stress Analysis
Information
Advances in X-Ray Analysis , Volume 20: Twenty-Fifth Annual Conference on Applications of X-ray Analysis, August 4-6, 1976 , 1976 , pp. 321 - 328
Copyright
Copyright © International Centre for Diffraction Data 1976

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References

1. Regalbuto, J. A., and Wheeler, O. E., “Stress Distribution from Interference Fits and Uniaxial Tension”, Experimental Mechanics, Vol. 10, No. 7, pp. 274–280, July 1970.Google Scholar
2. Phillips, J. L., “Sleeve Cold-Working Fastener Holes”, Technical Report, AFML-TR-74-10, Wright-Patterson Air Force Base, OH 45433, February 1974.Google Scholar
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4. Potter, R. M. and Grandt, A. F. Jr., “An Analysis of Residual Stresses and Displacements Due to Radial Expansion of Fastener Holes”, Paper submitted for presentation at the ASHE 1975 Failure Prevention and Reliability Conference, 17-18 Sept 1975, Washington, D.C. Google Scholar