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Effects of Plasticity and Strain-Rate on Fatigue Crack Growth
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— 1982 — E.M.A.S. (U.K.)
Key information
record.authors:
fields.record.dateIssued.label
3amte.12e9/1/1982per0.0o0ent.for0amt.yeamr.0ont12
fields.record.abstract.label
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
record.authors.institution:
Luís Manuel Guerra da Silva Rosa
ist11630
fields.record.publisher.label
E.M.A.S. (U.K.)
fields.record.citationTitle.label
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fields.record.subjectFos.label
materials-engineering - fields.record.subjectFos.values.materials-engineering
fields.record.languageIso.label
eng - fields.record.languageIso.values.eng
fields.record.rights.label:
fields.record.rights.values.metadata-only-access