PSI - Issue 2_B

F. Minami et al. / Procedia Structural Integrity 2 (2016) 1561–1568

1568

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Minami, F., et al./ Structural Integrity Procedia 00 (2016) 000–000

5. Summary The fracture assessment standard, WES 2808, was developed in JWES for assessing brittle fracture of steel frame structures subjected to large cyclic and dynamic loading at the earthquake. WES 2808 is characterized by two unique ideas: 1) a reference temperature concept for the fracture toughness evaluation under seismic conditions and 2) the equivalent CTOD ratio, β , for correction of the CTOD toughness for constraint loss in structural components. Shimada et al. (2016), Igi et al. (2016), Yamaguchi et al. (2016) and Ohata et al. (2016) describe the details of the fracture assessment procedure. Takashima et al. (2016) demonstrates a good agreement between the fracture strains of beam-to-column subassemblies measured and estimated by WES 2808. References APD Committee, The Japan Welding Engineering Society: Strength and Fracture Toughness of Weld Connections in Steel Framed Structures, Seminar on Seismic Damage to Steel Framed Structures 1997, JWES-IS-9701, 47-192 (in Japanese). Bennett, P. E., Sinclair, G. M., 1966. Parameter Representation of Low-Temperature Yield Behavior of Body-Centered Cubic Transition Metals. Journal of Basic Engineering 88, 518-524. Beremin, F. M., 1983. A Local Criterion for Cleavage Fracture of a Nuclear Pressure Vessel Steel. Metallurgical Transactions 14A, 2277-2287. Hashida, T., Fujihira, S., Morikawa, J., Minami, F., Toyoda, M., 1998. Fracture Toughness and Mechanical Properties of Beam-to-Column Connections of Steel Framed Structures Damaged in Hyogoken-Nambu Earthquake. International Conference on Welded Constructions in Seismic Areas. Maui, Hawaii, USA, 212-225. Igi, S., Shimada, H., Kinefuchi, M., Minami, F., 2016. WES 2808 for Brittle Fracture Assessment of Steel Components under Seismic Conditions – Part III: Change in CTOD Fracture Toughness of Structural Steels by Pre-Strain and Dynamic Loading. Structural Integrity Procedia, to be published. Kubo, T., Igi, S., Handa, T., Suzuki, N., Toyoda, M., Ohata, M., Minami, F., 2007. Application of WES 2808 to Brittle Fracture Assessment for High Strength Gas Pipelines. 26 th International Conference on Offshore Mechanics and Arctic Engineering. San Diego, California, USA, paper OMAE2007-29246. Miki, T., Sato, Y., Nakashima, M., Sugaya, M., Suita, K., Hokoi, S., Harada, K., 2001. Full-Scale Dynamic Loading Test on Plastic Deformation, Thermal Energy and Temperature Rise of Welded Steel Beam-to-Column Connections. Summaries of Technical Papers of Annual Meeting, Architectural Institute of Japan, C-1, Structures III, Timber Structures, Steel Structures, Steel Reinforced Concrete Structures, 887-892. (in Japanese) Minami, F., Katou, T., Nakamutra, T., Arimochi, K., 1999. Evaluation of Fracture Toughness Results and Transferability to Fracture Assessment of Welded Joints. 18 th International Conference on Offshore Mechanics and Arctic Engineering. St. John’s, Newfoundland, Canada, paper OMAE/MAT-2130. Minami. F., Arimochi, K., 2001. Evaluation of Pre-Straining and Dynamic Loading Effects on the Fracture Toughness of Structural Steels by the Local Approach. Journal of Pressure Vessel Technology 123, 362-372. Minami, F., Ohata, M., Shimanuki, H., Handa, T., Igi, S., Kurihara, M., Kawabata, T., Yamashita, Y., Tagawa,T., Hagihara, Y., 2006. Method of Constraint Correction of CTOD Fracture Toughness for Fracture Assessment of Steel Components. Engineering Fracture Mechanics 73, 1996-2020. Minami, F., Ohata, M., 2007. Fracture Mechanics Assessment of Beam-to-Column Joints Subjected to Cyclic and Dynamic Loading. Welding in the World 51, 22-33. Minami, F., Ohata, M., Watanabe, D., 2008. Fracture Assessment Procedure for Structural Components under Cyclic and Dynamic Loading. International Journal of Offshore and Polar Engineering 18, 196-203. Minami, F., Takashima, Y., Ohata, M., Yamashita, Y., 2013. Constraint-Based Assessment of Fracture in Welded Components. Welding in the World 57, 707-718. Nakagomi, T., Yamada, T., Hisada, S., Okabayashi, I., 1995. Experimental Study on the Fracture Behavior under Cyclic Plastic Strain and the Worsen Properties of SM 490A. Journal of Construction Steel 3, 387-394 (in Japanese). Newman, Jr. J. C., Raju I.S., 1984. Stress Intensity Equations for Cracks in Three-Dimensional Finite Bodies Subjected to Tension and Bending Loads, NASA Technical Memorandum 85793. Ohata, M., Takashima, Y., Minami, F., 2016. WES 2808 for Brittle Fracture Assessment of Steel Components under Seismic Conditions – Part V: Equivalent CTOD Ratio for Correction of Constraint Loss in Beam-to Column Connections. Structural Integrity Procedia, to be published. Shimada, H., Shimanuki, H., Igi, S., Minami, F., 2016. WES 2808 for Brittle Fracture Assessment of Steel Components under Seismic Conditions – Part II: Change in Mechanical Properties of Structural Steels by Pre-Strain and Dynamic Loading. Structural Integrity Procedia, to be published. Takashima, Y., Ohata, M., Ishii, T., Hagihara, Y., Minami, F., 2016. WES 2808 for Brittle Fracture Assessment of Steel Components under Seismic Conditions – Part VI: Application of WES 2808 to Beam-to-Column Connections. Structural Integrity Procedia, to be published. Toyoda, M., 1995. How Structures Fared in Japan’s Great Earthquake. Welding Journal 74, 31-42. Yamaguchi, T., Kinefuchi, M., Igi, S., Shimada, H., Takashima, Y., Minami, F., 2016. WES 2808 for Brittle Fracture Assessment of Steel Components under Seismic Conditions – Part IV: Change in Mechanical Properties and Fracture Toughness of Steel Weld HAZ by Pre-Strain. Structural Integrity Procedia, to be published.