6533b852fe1ef96bd12ab834

RESEARCH PRODUCT

Fatigue crack propagation from a cold-worked hole

Salvatore Pasta

subject

Goodman relationbusiness.product_categoryMaterials sciencebusiness.industrySTRESS INTENSITY FACTORSMechanical EngineeringRESIDUAL-STRESSESFracture mechanicsStructural engineeringWork hardeningStrain hardening exponentELASTIC-PLASTIC ANALYSISFatigue limitFastenerCrack closureEXPANDED FASTENER HOLESMechanics of MaterialsSHEETGeneral Materials SciencebusinessVibration fatigue

description

Abstract The cold expansion process is widely used to enhance the fatigue life of structures with fastener holes. Various studies assert that the cold expansion improves the fatigue strength of fastener holes; however, the improvement of fatigue life is difficult to quantify. Therefore, the influence on fatigue life of cold-worked process was studied by numerical and experimental tests. Then, a parametric study on material hardening behavior and Bauschinger’s parameter was performed for several loading conditions in order to determine their effect on crack growth propagation. The results of the numerical tests have exhibited a good prediction of the fatigue life of the component.

yearjournalcountryeditionlanguage
2007-06-01Engineering Fracture Mechanics
https://doi.org/10.1016/j.engfracmech.2006.08.006