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Interaction of Edge and Internal Cracks In a Rotor Steel


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Title: Interaction of Edge and Internal Cracks In a Rotor Steel
Authors: Matake, Tomokazu / Nakamura, Makoto / Imai, Yasufumi / Takano, Yuusaku
Issue Date: Feb-1980
Publisher: 社団法人日本機械学会
Citation: Bulletin of JSME. 1980, 23(176), p.155-162
Abstract: The interaction of edge and internal cracks under a tensile load has been investigated using a Ni-Cr-Mo-V alloy rotor forging at - 75℃. Four kinds of crack configurations were used ; all the specimens has one internal crack and one edge crack. The length of the internal crack was kept constant but the length of the latter as well as the distance between cracks was varied systematically. At each crack tip, K_I value was estimated by the FEM calculation and the strength zone width, SZW, was measured. SZW at crack tips mutually interacting was larger than the predicted value from Bates' relation using the K_I values, although at the innermost tip, SZW and K_I values were well correlated by the relation. The influence of the internal crack on the edge one became larger as the edge crack became shorter.
URI: http://hdl.handle.net/10069/16746
ISSN: 00213764
Relational Links: http://ci.nii.ac.jp/naid/110002359177/
Rights: 社団法人日本機械学会 / 本文データは学協会の許諾に基づきCiNiiから複製したものである
Type: Journal Article
Text Version: publisher
Appears in Collections:Articles in academic journal

Citable URI : http://hdl.handle.net/10069/16746

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