1. 1) British Standard BS7448 part1 "Fracture Mechanics toughness tests Part1. Method for Determination of KIC, critical CTOD and critical J values of metallic materials", (1991).
2. 2) International. Standard organization, Unified method of test for the determination of quasistatic fracture toughness, ISO12135, (2002).
3. 3) Tetsuya Tagawa, Tomoya Kawabata, Takahiro Sakimoto, Yoichi Kayamori, Mitsuru Ohata, Yoichi Yamashita, Ei-ichi Tamura, Hitoshi Yoshinari, Shuji Aihara, Fumiyoshi Minami, Hiroshi Mimura and Yukito Hagihara, "Experimental measurements of deformed crack tips in different yield-to-tensile ratio steels", Engineering Fracture Mechanics, Volume 128(2014), 157-170.
4. 4) Tomoya Kawabata, Tetsuya Tagawa, Takahiro Sakimoto, Yoichi Kayamori, Mitsuru Ohata, Yoichi Yamashita, Ei-ichi Tamura, Hitoshi Yoshinari, Shuji Aihara, Fumiyoshi Minami, Hiroshi Mimura and Yukito Hagihara, "Proposal of a new CTOD calculation formula", Engineering Fracture Mechanics, submitted.
5. 5) The Japanese Welding Engineering Sociey, Standard Test Method for Crack-Tip Opening Displacement (CTOD) fracture toughness measurement, WES1108:1995.