Simulation of Fatigue Crack Initiation at Corrosion Pits With EDM Notches
作者： John A. Newman , Stephen W. Smith , Robert S. Piascik
DOI:
关键词: Dynamometer 、 Fatigue testing 、 Metallurgy 、 Stress level 、 Landing gear 、 Stress conditions 、 Materials science 、 Corrosion 、 Aluminium 、 Stress (mechanics)
摘要: Uniaxial fatigue tests were conducted to compare the life of laboratory produced corrosion pits, similar those observed in shuttle main landing gear wheel bolt-hole, and an electro-discharged-machined (EDM) flaw. EDM Jaws are used simulate pits during (dynamometer) testing. The aluminum alloy, (AA 7050) local stress level contained bolt-hole. Under this high condition, notch a test specimens containing size. Based on results, Jaw (semi-circular disc shaped) produces state can be pit dynamometer tests.
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