Conference
Effects of Plasticity and Strain-Rate on Fatigue Crack Growth
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— 1982 — E.M.A.S. (U.K.)
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Published in
September 1982
Abstract
A general relationship for the calculation of strain rates at a fatigue crack tip was derived and used to predict the effect of strain rate on the yield stress of metallic materials and consequently on the dimensions of the monotonic and cyclic plastic zones. Plastic zones were measured in a medium strength ferrite-pearlite steel (BM45) fatigue tested at 25 Hz at room temperature. Two methods were applied: microhardness and the “fatigue in compression technique”. The retardation effects due to overloads were analysed using the da/dN vs. delta K relationship. Finally it is suggested that in ductile metals a steady state of fatigue crack growth occurs under plane strain conditions.
Publication details
Authors in the community:
Luís Manuel Guerra da Silva Rosa
ist11630
Publisher
E.M.A.S. (U.K.)
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Fields of Science and Technology (FOS)
materials-engineering - Materials engineering
Publication language (ISO code)
eng - English
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