Results 121 to 130 of about 9,383 (143)

Dose–time dependence of steel critical brittleness temperature for VVER-1000 vessel service life prediction

Atomic Energy, 2011
The high conservativeness of the evaluation of the service life of VVER-1000 vessels is due to the operational reliability margin and the high error in determining the initial computational data. A structural analysis of the error in critical brittleness temperature investigations is presented and the factors which have a large effect on the error in ...
A. V. Dub, V. N. Skorobogatykh, N. P. Anosov, V. V. Zharov, A. S. Zubchenko, V. A. Piminov   +5 more
openaire   +1 more source

A new model of the critical crack size for low temperature brittle fracture of structural steel and its experimental verification

Engineering Fracture Mechanics, 1994
Abstract In this paper, a new model of the critical crack size for low temperature brittle fracture of structural steel was introduced and experimentally verified. This model not only emphasizes the key role of crack size in structure failure but also reflects the ductile-brittle transition temperature effect of structural steel, i.e.
Lei Weisheng, Yao Mei
openaire   +1 more source

Methodological Features of WWER RPV Metal Critical Temperature of Brittleness Prediction on the Base of the Data Scatter and the Chemical Composition

Volume 3: Design and Analysis, 2015
For WWER-1000 reactor pressure vessel (RPV) the metal embrittlement monitoring is performed with the usage of the radiation and the temperature surveillance specimens (SS) sets. For the fracture toughness curve indexing the critical temperature of brittleness (CTB) is used, CTB is obtained by the processing of Charpy impact energy data ...
Igor Orynyak, Maksym Zarazovskii, Sergii Radchenko   +2 more
openaire   +1 more source

Statistical Estimate of Determining the Critical Temperature of Brittleness for Metal of the VVER-1000 Reactor Vessel Using Impact Bending Test Data

Inorganic Materials, 2018
Using statistical modeling (Monte Carlo method), numerical experiments were performed to determine the critical temperature Tc of brittleness according to the PNAE G-7-002-86 and RD EO 0598-2004 methodologies. The data of the Charpy impact test (V-notched) used in the calculations were obtained using more than 1200 samples of 15Kh2NMFAA steel cut from ...
A. G. Kazantsev, V. M. Markochev, B. A. Sugirbekov   +2 more
openaire   +1 more source

Sub-critical crack growth rate of soda-lime-silicate glass and less brittle glass as a function of fictive temperature

Journal of Non-Crystalline Solids, 2007
Abstract Sub-critical crack growth rates of soda-lime-silicate glass and less brittle glass with different fictive temperatures were compared using the DCDC method under both dry and humid atmospheres in order to investigate the origin of the unique mechanical features of the less brittle glass developed by Ito and his collaborators.
Akio Koike, Minoru Tomozawa, Setsuro Ito
openaire   +1 more source

Effect of Drop Height on Critical Temperature Difference (ΔT _c ) for Brittle Ceramics Subjected to Thermal Shock by Quenching into Water

Journal of the American Ceramic Society, 1983
The critical quenching temperature differences required to initiate thermal stress failure of soda‐lime‐silica glass, polycrystalline Al 2 O 3 , mullite, and reaction‐sintered Si 3
Jitendra P. Singh, D. P. H. Hasselman, Gunter Ziegler   +2 more
openaire   +1 more source

Effect of Dynamic Loads on the Limit Stresses and Second Critical Brittle Temperatures of Butt Weld Joints

Strength of Materials, 2018
Experimental results for cracked butt weld joints of 09G2 and 12GN2MFAYu steels are evaluated at different ratios of static and dynamic stresses over a wide range of climatic temperatures. The tests were performed on a unit built upon the impact-testing machine. The opening of crack edges was measured with a displacement gauge.
openaire   +1 more source

Using a united approach to evaluating the critical temperature in the stage of initiation and arrest of a brittle crack

Soviet Materials Science, 1992
1. The critical temperature of arrest of brittle cracks can be interpreted as a partial case on the critical temperature of brittleness in crack initiation. 2. A method of determining the correlation between the CTABC and the critical brittleness temperature at crack initiation was determined.
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ESTIMATION OF CRITICAL TEMPERATURES OF BRITTLE-DUCTILE TRANSITION AND BRITTLE FRACTURE ARREST CORRELATION BASED ON FINITE ELEMENT MODELLING

Industrial laboratory. Diagnostics of materials, 2018
A. V. Ilyin, D. M. Artemiev, V. Yu. Filin   +2 more
openaire   +1 more source

Evaluation and analysis of sandstone brittleness under the influence of temperature

Geomechanics and Geophysics for Geo-Energy and Geo-Resources, 2021
Weijing Xiao, Shujian Li, Dongming Zhang   +2 more
exaly