... plate, although the low-toughness WM was responsible for brittle fracture initiation in the same manner as in the 3PB specimen. The fracture toughness of the multilayer dissimilar joint was apparently larger than the welded joint made with the low toughness WM only. The weakest-link model has been...

... analysis was carried out. The tensile properties at room temperature and at high temperature were investigated, together with the fracture toughness. All the obtained results were compared with the traditional and reference ISO 1.2738 mould steel. Moreover, dilatometric tests were performed to investigate...

... experimental results. 19 01 2009 11 04 2011 06 05 2011 layered structures fracture toughness mechanical testing size effect characterization References Evans , A. G. , “ Perspective on the Development of High Toughness Ceramics ,” J. Am. Ceram. Soc.   0002-7820 , Vol...

... information regarding the problem under study. 01 06 2009 21 10 2010 12 11 2010 coatings cohesive zone modeling finite element method fracture toughness 2009-05-20 - 2009-05-22 Fatigue and Fracture Mechanics (37th ASTM National Symposium on Fatigue and Fracture Mechanics...

...M. Scibetta; E. Lucon; T. Houben Fracture toughness testing on standard specimens in the ductile to brittle transition regime is well established and standardized by the ASTM since 1997. However, its applicability to structural components and its potential conservatism remain a subject of concern...

...-T561 aluminum alloy, 2024-T351 aluminum alloy, and 304 stainless steel—and different specimen widths were employed in order to take account of in-plane specimen size effect on fracture toughness. Typical experimental data are reanalyzed, and crack growth resistance curves are developed in accordance...

...Enrico Lucon; Ann Leenaers; Willy Vandermeulen; Marc Scibetta An investigation has been conducted on the influence of the through-thickness sampling position on the tensile and fracture toughness properties of reactor pressure vessel forgings, using material from two actual pressurized water...

...William L. Server; Randy K. Nanstad The International Atomic Energy Agency (IAEA) has conducted a series of coordinated research projects (CRPs) that have focused on irradiated reactor pressure vessel (RPV) steel fracture toughness properties and approaches for assuring structural integrity of RPVs...

... a database of fracture toughness and arrest values for neutron fluences beyond the end of life range. The new database comprises data from both unirradiated and irradiated RPV base and weld materials generated by tensile, Charpy-V impact, fracture toughness K Jc , and crack arrest K Ia tests. The test matrix...

... the investigation of trepans taken from the decommissioned WWER-440 RPVs of the Greifswald NPP. The key part of the testing is aimed at the determination of the reference temperature T 0 following the ASTM Test Standard E1921 to determine the fracture toughness of the RPV steel in different thickness locations...

...Enrico Lucon; Marc Scibetta; Robert Gérard The “classical” regulatory approach to the analysis of surveillance capsules in nuclear power plants entails an indirect estimate of the fracture toughness of the beltline materials, by inferring rather than measuring their toughness properties. Indeed...

...Stephen M. Graham; Richard Stanley A weld fracture toughness round robin test program was initiated by ASTM to evaluate a proposed annex to E1290-93 on fracture toughness testing of ferritic steel weldments. The focus of the round robin was on specimen preparation procedures and their effect...

...M. Scibetta; J. Schuurmans; E. Lucon Fracture toughness testing on standard specimens in the ductile to brittle transition regime is well established and was first standardized by ASTM in 1997. However, its applicability to structural components and its potential conservatism, due to the high...

...Hans-Jakob Schindler; Dietmar Kalkhof; Philip Tipping The master-curve (MC) enables fracture toughness to be measured in the ductile-to-brittle temperature (DBT) regime of ferritic steels using small specimens. However, MC application to structural components remains unclear in some areas. Vital...

...Michael R. Hill; John E. VanDalen This paper describes tests carried out to evaluate whether comparable values of fracture toughness may be determined from coupons that contain a range of residual stress. Coupons for fracture toughness testing are taken from a single rolled plate of 7075-T6...

... scaling factor was applied. KEYWORDS: Fracture toughness, J-R curve, tearing instability, segregation, Zr-2.5%Nb, pressure tube Introduction A number of premature failures of pressure tubes have been reported 1 . The governing factors for the primary failure were identi ed and modi cations in the process...

...Marta Serrano; Pilar Fernández; Jesús Lapeña Eurofer’97 is the structural reference material that will be tested in the ITER modules. Its metallurgical properties have been well characterized during the last years. However, more investigations related to the fracture toughness of this material...

... embrittlement fracture toughness heat treatment References Nanstad , R. K. , McCabe , D. E. , Haggag , F. M. , Bowman , K. O. , and Downing , D. J. , “ Statistical Analyses of Fracture Toughness Results for Two Irradiated High-Copper Welds ,” Effects of Radiation on Materials...

... to characterize the fracture toughness and a crack arrest reference temperature, T KIA =−136°C was determined for the HSLA-100 plate. This corresponded to a shift in the crack initiation reference temperature of +36°C. The shift in reference temperature was much less than that observed for low Ni steel alloys...

... procedure cannot be applied directly to the thin-walled cladding geometry. Thus, attempts to measure fracture toughness have been influenced not only by material characteristics but also by the technique used to measure it. A large scatter in the reported data exists. Crack propagation resistance...