...Yoosung Ha; Tohru Tobita; Hisashi Takamizawa; Jinya Katsuyama The fracture toughness in the heat-affected zone (HAZ), which is located under the weld overlay cladding on the inner surface of the reactor pressure vessel (RPV), was evaluated by considering the inhomogeneous microstructures of the HAZ...

...-cracked pipe. While the existing recommended and industrial practices for SEN(T) have been developed based on assumption of homogenous or monomaterial across the crack, their applicability for the evaluation of fracture toughness of the heat-affected zone (HAZ) were evaluated in this investigation. When...

...Zhongqiang Zhou; Song Huang; Hu Hui; Yalin Zhang Charpy impact specimens are preferred to characterize the deterioration of steel in irradiation surveillance program in nuclear industry. But the fracture toughness cannot be acquired by the Charpy impact experiment directly. In this paper...

...Jong-Min Kim; Seok-Min Hong; Min-Chul Kim; Bong-Sang Lee The standard master curve (MC) approach has a major limitation in that it is only applicable to homogeneous datasets. In nature, steels are macroscopically inhomogeneous. Reactor pressure vessel (RPV) steel has different fracture toughness...

... with adequate accuracy for evaluating the fracture toughness was ascertained. Contributed by the Pressure Vessel and Piping Division of ASME for publication in the J OURNAL OF P RESSURE V ESSEL T ECHNOLOGY . Manuscript received February 18, 2016; final manuscript received August 17, 2016; published...

..., 2013. Assoc. Editor: David L. Rudland. 23 01 2013 25 06 2013 The Master Curve gives the relation between the median of fracture toughness of ferritic steels and the temperature in the ductile–brittle transition temperature region. The procedure used to determine the Master Curve...

...Hyeon Su Kim; Min Sung Chun; Jae Myung Lee; Myung Hyun Kim The aim of this study was to estimate the fatigue strength and fracture toughness of the structural components of the LNGC insulation system considering the density effect of R-PUF for improving the structural strength and difference...

...Naoki Miura; Naoki Soneda The fracture toughness master curve shows the relationship between the median of fracture toughness and temperature in the ductile–brittle transition temperature region of ferritic steels such as reactor pressure vessel (RPV) steels. The master curve approach specified...

... to characterize the fracture toughness of nonused coiled tubing, using nonstandard specimens due to difficulties with their small thickness and diameters. Different crack lengths and crack locations were tested to analyze the 2C 0 /W ratio and the influence of the longitudinal weld. The R curves obtained show...

... cycle on the fracture toughness during subsequent straining was observed. In this work, an approach similar to that taken by Ernst et al. ( 10 ) was adopted. The effect of load history on the fracture toughness is examined by testing specimens subjected to a strain cycle, representative of conditions...

...Masahito Mochizuki; Masao Toyoda A welded joint generally has heterogeneity of strength, material, and fracture toughness. It is important to understand the characteristics of the strength and fracture of welded joints while considering the heterogeneous effect. In particular, the material behavior...

... to its small groove angle and welding bead width compared with the conventional welds. In this paper, the tensile and fracture toughness test results of the three ER308L test coupons from NGW were presented and compared with those from conventional welds at the operating condition of the nuclear power...

...Y. W. Kwon; W. A. Schultz; D. C. Loup; E. A. Rasmussen In order to join a composite structure to a metallic structure, metal-wire mats were co-cured with composite laminas using the vacuum assisted resin transfer molding technique. Then, interface fracture toughness was measured for Mode II...

...S. D. Faulkner; Y. W. Kwon Fracture toughness tests were conducted for carbon composite scarf joints with and without carbon nanotube (CNT) reinforcement in order to study the effect of CNT on enhancing the fracture toughness of the scarf joint interface. Both mode I (i.e., opening mode) and mode...

...) was initially used in USC plants and HCM12A (ASME Grade 122 ( 1 ), KA-SUS410J3 in Japanese standard) was subsequently employed to achieve cost reduction by thinning tube or pipe with higher allowable stresses. creep fracture fracture toughness stainless steel welding 17 03 2009 11 09...

... P LM ( σ ) = T × ( log   t r + C LM ) creep fracture rupture strength life prediction heat-resistance steel creep fracture fracture toughness heat steel 30 07 2008 23 12 2009 22 10 2010 22 10 2010 2010 American...

... fracture fracture toughness reliability statistical analysis steel 14 08 2009 21 02 2010 19 10 2010 19 10 2010 As an example, Fig. 9 shows the effect of temperature fluctuation on the area of the interference region by using the SCRI model. The interference area increases...

... of heavy-section low-alloy steel plates, forgings, and welds, including metallurgical studies, mechanical properties, fracture toughness (quasi-static and dynamic), fatigue crack-growth, and crack-arrest toughness. Also included were irradiation effects studies, thermal shock analyses, testing of thick...

... 07 2010 cracks elastoplasticity fracture mechanics fracture toughness fracture toughness testing notch strength steel structural engineering work hardening yield stress CTOD is an elastic-plastic fracture mechanics parameter, and has been widely used for the evaluation...

...Satoshi Igi; Mitsuru Ohata; Fumiyoshi Minami Plastic constraint correction using the equivalent CTOD concept has been studied in the International Standardization of Fracture Toughness Evaluation Procedure for Fracture Assessment of Steel Structures project. This project was carried out over a 3...