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

• 資料種別: 文書・図像類
• タイトル: 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
• 著者・編者: 石原, 健一; 濵田, 猛; 飯井, 俊行; Ishihara, Kenichi; hamada, Takeshi; Meshii, Toshiyuki
• 著者標目: 石原, 健一; 濵田, 猛; 飯井, 俊行; Ishihara, Kenichi; hamada, Takeshi; Meshii, Toshiyuki
• 出版事項: 社団法人日本機械学会
• 出版年月日等: 2017-02-21
• 出版年（W3CDTF）: 2017-02-21
• 並列タイトル等: The scaling of stress distribution under small scale yielding by T-scaling method and application to prediction of the temperature dependence on fracture toughness
• タイトル（掲載誌）: 日本機械学会論文集=Transactions of the JSME
• 巻号年月日等（掲載誌）: 83 847
• 掲載巻: 83
• 掲載号: 847
• 掲載ページ: 16-00499-
• ISSN（掲載誌）: ISSN : 2187-9761
• 本文の言語コード: jpn
• 件名標目: 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
• 対象利用者: 一般
• 一般注記: 出版タイプ： AO; 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.
• 著作権情報: 〓 2017 日本機械学会
• 関連情報（DOI）: 10.1299/transjsme.16-00499; https://doi.org/10.1299/transjsme.16-00499
• 連携機関・データベース: 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
• 提供元機関・データベース: 福井大学 : 福井大学学術機関リポジトリ