Retardation of cracks emanating from fastener holes
References (5)
High interference sleeve cold working and sizing of holes
The Boeing Company, Renton Washington Report No. D6-25215
(1970)- et al.
Fatigue and stress corrosion test of selected fasteners/hole processes
ASD-TR-72-111
(1973)
Cited by (57)
Investigation of residual stress relaxation in cold expanded holes by the slitting method
2017, Engineering Fracture MechanicsCitation Excerpt :Large compressive residual hoop stresses, near the compressive yield strength of the material, are left surrounding the hole. Numerous studies have shown that cold expanded holes can have fatigue lives exceeding 10 times that of non-cold expanded holes [1–7]. Despite the proven fatigue life improvement, regulatory policies state that compliance with damage tolerance requirements should be achieved without considering the beneficial effects of cold expanded holes [8,9].
On the prediction of initiation life for fatigue crack emanating from small cold expanded holes
2012, Journal of Materials Processing TechnologyCitation Excerpt :The cold expansion method has been the wildly used technique which can significantly improve the fatigue life of mechanical structures, (Petrak and Stewart, 1974).
On the fatigue behavior of cold expanded fastener holes subjected to bolt tightening
2011, International Journal of FatigueCitation Excerpt :Therefore, it is of great importance to reduce the effect of the stress concentration and attain enhanced fatigue life. This can be achieved by introducing a compressive stress field into the surrounding material of the hole [1]. One common technique is hole cold expansion that was originally invented by Boeing company about forty years ago and later developed and marketed by Fatigue Technology Inc. (FTI).
The effect of hole shape on the extent of fatigue life improvement by cold expansions
2009, Engineering Failure AnalysisPredicting corner crack fatigue propagation from cold worked holes
2009, Engineering Fracture MechanicsNumerical and experimental study of the cold expansion process in 7085 plate using a modified split sleeve
2007, Journal of Materials Processing Technology