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Title :Fe-3%Si合金の疲労き裂伝ぱに及ぼす単一過大応力の影響について
Title alternative :Effects of Overload on Fatigue Crack Propagation of Fe-3% Si Alloy
Authors :真壁, 朝敏
崎浜, 寿
Authors alternative :Makabe, Chobin
Sakihama, Hisashi
Issue Date :25-Aug-1993
Abstract :The effect of tensile overload on fatigue crack propagation behavior of Fe-3% Si alloy was investigated by the measurement of surface crack length and crack closure level. Crack propagation after the overloading was observed to be delayed under constant stress amplitude. The delayed propagation was predominated by the crack closure behavior, and when the crack propagation rate da/dN became lower, the crack closure level became higher. Also, the crack propagation law could be reasonably evaluated with the effective stress intensity factor range ΔK_<eff> independent of the delayed propagation. It is expected for this reason that crack tip blunting hardly affected the crack propagation in the case of the present material.
Type Local :雑誌掲載論文
ISSN :03875008
Publisher :日本機械学会
URI :http://hdl.handle.net/20.500.12000/135
Citation :日本機械学会論文集. A編 = Transactions of the Japan Society of Mechanical Engineers. A Vol.59 no.564 p.6 -11
Appears in Collections:Peer-reviewed Journal Articles (Faculty of Engineering)

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