Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) SHIRAKI Naoto and NAKAYAMA Shigeru and SUGIYAMA Yoshihiro and ASAMI Katsutoshi,Simple Method for Evaluating of Fracture Toughness of Metallic Materials Utilizing Tensile Properties.,TRANSACTIONS OF THE JAPAN SOCIETY OF MECHANICAL ENGINEERS Series A,03875008,The Japan Society of Mechanical Engineers,1997,63,611,1437-1441,https://cir.nii.ac.jp/crid/1390282679424300160,https://doi.org/10.1299/kikaia.63.1437