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Title :交差貫通穴材における疲労き裂伝ぱ挙動
Title alternative :Fatigue Crack Propagation Behavior from a Internal Notch of Perpendicularly Intersecting Two Holes
Authors :真壁, 朝敏
大場, 克巳
兼城, 英夫
糸数, 真哉
Authors alternative :Makabe, Chobin
Ohba, Katsumi
Kaneshiro, Hideo
Itokazu, Masaya
Issue Date :25-Sep-1992
Abstract :Fatigue crack propagation behavior was observed by means of the beach mark method on the fracture surface. In the specimen with perpendicularly intersecting two holes, the fatigue crack was initiated at the internal corners of two holes and propagated from the internal section to the outside. In the first stage of crack propagation, the crack front formed a straight line and the cracked area in the form of a triangle was observed. This shape gradually changed with the crack propagation. In the final stage of crack propagation, a parabola-like crack front was observed. The crack propagation was examined with the change in the cracked area S. The crack propagation rate of the area, dS/dN, was found to be proportional to the area S, and the crack propagation law could be expressed as dS/dN=CΔσ^nS (Δσ is the cyclic stress range, n and C are constant).
Type Local :雑誌掲載論文
ISSN :03875008
Publisher :日本機械学会
URI :http://hdl.handle.net/20.500.12000/252
Citation :日本機械学会論文集. A編 = Transactions of the Japan Society of Mechanical Engineers. A Vol.58 no.553 p.70 -75
Appears in Collections:Peer-reviewed Journal Articles (Faculty of Engineering)

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