Size effect on heat conduction and associate thermal fracture behavior of thin ceramic plates

2021 ◽  
Vol 113 ◽  
pp. 102951
Author(s):  
Zhangna Xue ◽  
Xiaogeng Tian ◽  
Yalin Luan ◽  
Jianlin Liu
Keyword(s):  
Heat Conduction ◽  
Size Effect ◽  
Fracture Behavior ◽  
Thermal Fracture

scholarly journals Tensile fracture of ultrafine grained aluminum 6061 sheets by asymmetric cryorolling for microforming

2014 ◽  
Vol 23 (8) ◽  
pp. 1077-1095 ◽  
Author(s):  
Hailiang Yu ◽  
Kiet Tieu ◽  
Cheng Lu ◽  
Yanshan Lou ◽  
Xianghua Liu ◽  
...  
Keyword(s):  
Size Effect ◽  
Tensile Test ◽  
Fracture Behavior ◽  
Unsolved Problem ◽  
Shear Fracture ◽  
Tensile Fracture ◽  
The Finite Element Method ◽  
Fracture Angle ◽  
Ultrafine Grained ◽  
Number Of Passes

The size effect on the mechanism of fracture in ultrafine grained sheets is an unsolved problem in microforming. This paper describes a tensile test carried out to study the fracture behavior and the shear fracture angles of both rolled and aged ultrafine grained aluminum 6061 sheets produced by asymmetric cryorolling. A scanning electron microscope was used to observe the fracture surface. The finite element method was used to simulate the tensile test using the uncoupled Cockcroft–Latham and Tresca criteria and the coupled Gurson–Tvergaard–Needleman damage criterion. It was found that the shear fracture angle decreases gradually from 90° to 64° with an increasing number of passes. The results of simulations using the Gurson–Tvergaard–Needleman criterion show trends similar to the experimental ones. The paper also presents a discussion on the fracture mechanism and the size effect during the tensile test.

The Investigation of the Factors of the Fracture Toughness Based on the Compact Tension Specimen

2015 ◽  
Vol 1119 ◽  
pp. 775-778
Author(s):  
Yan Wei Wang ◽  
Xuan Du ◽  
Guang Ping Zou ◽  
Cong Bo Ma
Keyword(s):  
Experimental Data ◽  
Numerical Simulation ◽  
Size Effect ◽  
Fracture Behavior ◽  
Tensile Loading ◽  
Compact Tension ◽  
Compact Tension Specimen ◽  
Tension Specimen ◽  
Initial Load ◽  
Simulation Results

This article studies the fracture behavior of compact tension specimens under tensile loading. The test - numerical hybrid method is used to explore the effect of the location of the loading hole. And the size effect is also considered to analysis the reason of fracture behavior .The initial load for numerical simulation is based on the experimental data. In that case, the numerical simulation results can be used to study the effect of the location of the loading hole and also the size effect to the specimens.

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