Stressed state and brittle fracture resistance of elastically heterogeneous butt joints

1987 ◽  
Vol 23 (2) ◽  
pp. 142-146
Author(s):  
O. A. Bakshi ◽  
N. L. Zaitsev ◽  
K. M. Gumerov
Keyword(s):  
Brittle Fracture ◽  
Stressed State ◽  
Fracture Resistance ◽  
Butt Joints ◽  
Brittle Fracture Resistance

scholarly journals Inclusion of Warm Pre-Stress Concept in French RPV Structural Integrity Assessment

2016 ◽  
Author(s):  
Dominique Moinereau ◽  
Malik Ait-Bachir ◽  
Stéphane Chapuliot ◽  
Stéphane Marie ◽  
Clémentine Jacquemoud ◽  
...  
Keyword(s):  
Brittle Fracture ◽  
Fracture Resistance ◽  
Large Scale ◽  
Structural Integrity ◽  
Stress Effect ◽  
Local Approach ◽  
Experimental Database ◽  
Term Operation ◽  
Integrity Assessment ◽  
Brittle Fracture Resistance

Evaluation of the fracture resistance of nuclear reactor pressure vessel (RPV) regarding the risk of brittle fracture is a key point in the structural integrity assessment of the component (RPV). Such approach is codified in French RSE-M code, based on a very conservative methodology. With respect to long term operation, an improvement of the present methodology is necessary and in progress to reduce this conservatism. One possible significant improvement is the inclusion of the warm pre-stress (WPS) concept in the assessment. After a short description of the WPS concept, the process engaged in France to allow inclusion of WPS in the integrity assessment is presented. In a first step, experimental and numerical studies have been conducted in France by EDF, CEA and AREVA (also including international collaborations and projects) to demonstrate and validate the beneficial effect of WPS on the brittle fracture resistance of RPV steels. A large panel of experimental results and data is now available obtained on small, medium and large scale specimens on representative RPV steels (including highly irradiated RPV materials). These data have been included in a specific WPS experimental database. Main experiments have been interpreted by refined computations, based on elastic plastic analyses and local approach to cleavage fracture. In a second step, a new criterion (ACE criterion) has been proposed by French organizations (AREVA, CEA and EDF) for an easy simplified evaluation of warm pre-stress effect on the brittle fracture resistance of RPV steels. Accuracy and conservatism of the criterion is verified by comparison to experimental data results and numerical analyses. Finally, implementation of the WPS effect in the French RSE-M code (for in service assessment) is in progress, based on the ACE criterion. The present paper summarizes all these steps leading to codification of WPS in RSE-M code.

Effect of transient heating of the outer surface of a radial crack-containing ring specimen on its brittle fracture resistance

2012 ◽  
Vol 44 (4) ◽  
pp. 429-437 ◽  
Author(s):  
G. V. Stepanov ◽  
V. V. Kharchenko ◽  
A. A. Kotlyarenko ◽  
A. I. Babutskii ◽  
V. N. Zhmaka
Keyword(s):  
Brittle Fracture ◽  
Outer Surface ◽  
Fracture Resistance ◽  
Radial Crack ◽  
Ring Specimen ◽  
Transient Heating ◽  
Brittle Fracture Resistance

Al2O3-Based Ceramic Composites with a High Brittle Fracture Resistance

2019 ◽  
Vol 55 (6) ◽  
pp. 628-633 ◽  
Author(s):  
L. I. Podzorova ◽  
A. A. Il’icheva ◽  
O. I. Pen’kova ◽  
O. S. Antonova ◽  
A. S. Baikin ◽  
...  
Keyword(s):  
Brittle Fracture ◽  
Fracture Resistance ◽  
Ceramic Composites ◽  
Brittle Fracture Resistance

Fracture Characteristics of 9%Ni Steel at Low Temperature

2015 ◽  
Author(s):  
Qingren Xiong ◽  
Chunyong Huo ◽  
Shaotao Gong ◽  
Jinheng Luo ◽  
Jiming Zhang ◽  
...  
Keyword(s):  
Low Temperature ◽  
Brittle Fracture ◽  
Fracture Resistance ◽  
Preparation Method ◽  
Tensile Specimen ◽  
Relative Strength ◽  
Fracture Characteristics ◽  
Brittle Fracture Resistance

The fracture characteristics of several types of tensile specimens of 9%Ni steel at low temperature was studied, and the Notch (Crack) Sensitivity and Notch (Crack) Relative Strength decreased (increased) Ratio of notch (crack) specimen were studied, while the crack preparation method of the crack specimen was discussed. The results indicate that the Notch (Crack) Sensitivity and Notch (Crack) Relative decreased (increased) Ratio can be used to evaluate the low temperature low stress brittle fracture resistance of the material. 9%Ni steel has good brittle fracture resistance at low temperature. The crack preparation principle of the crack tensile specimen was put forward.

scholarly journals Brittle fracture resistance and damping properties of layered metal-polymer composites

2021 ◽  
Vol 11 (3) ◽  
pp. 279-284
Author(s):  
Svetlana Kuteneva ◽  
Sergei Gladkovsky ◽  
Dmitriy Vichuzhanin ◽  
Pavel Nedzvetsky
Keyword(s):  
Brittle Fracture ◽  
Polymer Composites ◽  
Fracture Resistance ◽  
Damping Properties ◽  
Brittle Fracture Resistance ◽  
Metal Polymer
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