小規模降伏条件下応力分布スケーリング法の提案と破壊靭性値の温度依存性予測への適用

• Material Type: 文書・図像類
• Title: 小規模降伏条件下応力分布スケーリング法の提案と破壊靭性値の温度依存性予測への適用
• Author/Editor: 石原, 健一; 濵田, 猛; 飯井, 俊行; Ishihara, Kenichi; hamada, Takeshi; Meshii, Toshiyuki
• Author Heading: 石原, 健一; 濵田, 猛; 飯井, 俊行; Ishihara, Kenichi; hamada, Takeshi; Meshii, Toshiyuki
• Publication, Distribution, etc.: 社団法人日本機械学会
• Publication Date: 2017-02-21
• Publication Date (W3CDTF): 2017-02-21
• Alternative Title: The scaling of stress distribution under small scale yielding by T-scaling method and application to prediction of the temperature dependence on fracture toughness
• Periodical title: 日本機械学会論文集=Transactions of the JSME
• No. or year of volume/issue: 83 847
• Volume: 83
• Issue: 847
• Pages: 16-00499-
• ISSN (Periodical Title): ISSN : 2187-9761
• Text Language Code: jpn
• Subject Heading: Fracture toughness; Ductile-to-brittle temperature region; SE(B) specimen; Temperature dependence; Test spesimen thickness; Tensile property; Small scale yielding; Stress distribution scaling; HRR stress distribution; K stress distribution
• Target Audience: 一般
• Note (General): In this paper, a new method for scaling the crack tip stress distribution under small scale yielding condition was proposed and named as T-scaling method. This method enables to identify the different stress distributions for materials with different tensile properties but identical load in terms of K or J. Then by assuming that the temperature dependence of a material is represented as the stress-strain relationship temperature dependence, a method to predict the fracture load at an arbitrary temperature from the already known fracture load at a reference temperature was proposed. This method combined the T-scaling method and the knowledge “fracture stress for slip induced cleavage fracture is temperature independent." Once the fracture load is predicted, fracture toughness Jc at the temperature under consideration can be evaluated by running elastic-plastic finite element analysis. Finally, the above-mentioned framework to predict the Jc temperature dependency of a material in the ductile-to-brittle temperature distribution was validated for 0.55% carbon steel JIS S55C. The proposed framework seems to have a possibility to solve the problem the master curve is facing in the relatively higher temperature region, by requiring only tensile tests.
• Access Restrictions: 限定公開
• Rights (production): 〓 2017 日本機械学会
• Related Material (DOI): 10.1299/transjsme.16-00499
• Data Provider (Database): 国立情報学研究所 : 学術機関リポジトリデータベース（IRDB）（機関リポジトリ）; https://irdb.nii.ac.jp
• Original Data Provider (Database): 福井大学 : 福井大学学術機関リポジトリ