Investigation of the Effect of the Roughness-Induced Crack Closure on the Fatigue Crack Propagation Behavior of Hot-Rolled Steels under Mixed-Mode Loading Conditions
- Authors
- Seo, Ki-Jeong; Lee, Jeong-Moo; Choi, Byoung-Ho
- Issue Date
- 2월-2012
- Publisher
- JAPAN INST METALS & MATERIALS
- Keywords
- fatigue crack; crack opening ratio; roughness-induced crack closure; mixed-mode; C-scan
- Citation
- MATERIALS TRANSACTIONS, v.53, no.2, pp.264 - 269
- Indexed
- SCIE
SCOPUS
- Journal Title
- MATERIALS TRANSACTIONS
- Volume
- 53
- Number
- 2
- Start Page
- 264
- End Page
- 269
- URI
- https://scholar.korea.ac.kr/handle/2021.sw.korea/106194
- DOI
- 10.2320/matertrans.I-M2011839
- ISSN
- 1345-9678
- Abstract
- It is reasonable to apply crack closure concepts, i.e. roughness-induced crack closure, to understand the crack propagation behavior under mixed mode loading conditions. In this paper, the characteristics of fatigue crack propagation under mixed-mode loading is studied using the concept of roughness-induced crack closure, and a model of the variation of the crack opening ratio is proposed based on multi-variable statistics. In addition, fracture surfaces are examined by C-scan and classified into four stages to quantify the effect of crack closure. The roughness parameter based on the highest intensity reveals the effect of roughness-induced crack closure on the fatigue crack propagation. [doi:10.2320/matertrans.I-M2011839]
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Collections - College of Engineering > Department of Mechanical Engineering > 1. Journal Articles
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