@article{oai:kyutech.repo.nii.ac.jp:00005501, author = {Ikeda, Tomohiro and Umetani, Takuo and Kai, Nobuhiro and Ogi, Keisaku and Noda, Nao-Aki and 野田, 尚昭 and Sano, Yoshikazu and 佐野, 義一}, issue = {1}, journal = {Journal of Physics: Conference Series}, month = {Jun}, note = {The dependency of the tensile strength σ smooth B and the notch strength σ notch B on strain rate and temperature were investigated for conventional ferrite-pearlite type ductile cast iron (JIS-FCD500) to make clear the applicability of ductile cast iron to components for welded steel structures. High speed tensile tests were conducted on notched and smooth specimens with varying strain rate and temperature. Charpy absorbed energy was also evaluated on notched specimen with varying temperature. It is found that the tensile strength is in a good relationship with strain rate-temperature parameter R for the wide range of strain rate and temperature. With decreasing R parameter, both σ smooth B and σ notch B increase even when Charpy absorbed energy starts decreasing. It should be noted that the notch strength σ notch B is always larger than the tensile strength at room temperature σ smooth B, RT in the range of R parameter required for the welded structures. Therefore, the tensile strength σ smooth B, RT is confirmed to be useful for the structural design., 12th International Conference on Damage Assessment of Structures, 10–12 July 2017, Kitakyushu, Japan}, pages = {012049-1--012049-7}, title = {Dependency of tensile strength of ductile cast iron on strain rate and temperature}, volume = {842}, year = {2017}, yomi = {ノダ, ナオアキ and サノ, ヨシカズ} }