The effect of thermal shock temperature difference on the structural, dynamics and mechanical properties of carbon materials characterized by ultrasonic test technology

2021 ◽  
Author(s):  
Qin Deng ◽  
Wenfu Wei ◽  
Guofeng Yin ◽  
Wenhan Xie ◽  
Zhanglin Huang ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Thermal Shock ◽  
Structural Dynamics ◽  
Temperature Difference ◽  
Carbon Materials ◽  
Ultrasonic Test ◽  
Test Technology ◽  
Shock Temperature

Impact of thermal shock cycles on mechanical properties and microstructure of lithium disilicate dental glass-ceramic

2018 ◽  
Vol 44 (2) ◽  
pp. 1589-1593 ◽  
Author(s):  
Dongdong Qian ◽  
Lei Zhang ◽  
Ying Zhang ◽  
Pingying Liu ◽  
Xizhang Wang ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Thermal Shock ◽  
Glass Ceramic ◽  
Lithium Disilicate

Determining the Thermal Shock Elastic Behavior of Mullite Ceramic Regenerator Material by Ultrasonic Testing

2014 ◽  
Vol 633 ◽  
pp. 472-475 ◽  
Author(s):  
Tian Tian Sun ◽  
Yan Xia Wang ◽  
Hai Yun ◽  
Dong Huan Zhang ◽  
Qing Hui Shang
Keyword(s):  
Thermal Shock ◽  
Longitudinal Wave ◽  
Shear Wave ◽  
Wave Velocity ◽  
Temperature Difference ◽  
Shear Wave Velocity ◽  
Modulus Of Elasticity ◽  
Longitudinal Wave Velocity ◽  
Mullite Ceramic ◽  
Mullite Ceramics

Mullite material is a material commonly used in honeycomb regenerator, because in the process of using material under big temperature difference effect, so have a great demand for its thermal shock resistance. The used mullite ceramics were made by the direct solid phase sintering method, and the modulus of elasticity of the mullite ceramics measured by ultrasonic pulse-echo method in a thermal shock and thermal fatigue experiment, respectively. In the air-cooling condition, the study found the mullite ceramic without thermal shock that the longitudinal wave velocity and shear wave velocity respectively 3970(m/s) and 2492(m/s). After 45 times thermal shock of temperature difference of 800°C, longitudinal wave velocity and shear wave velocity decreased to 3910(m/s) and 2457(m/s), and the value of the modulus of elasticity changed 1020MPa. By observing the change of the elastic modulus value rule, can know the elastic deformation of thermal shock on the material performance of thermal shock damage. Moreover, the results can provide the data basis for the calculation of the residual strength and the numerical simulation of thermal stress.

Preparation of ZrO2 Composite Ceramics with High Thermal Shock Resistance

2012 ◽  
Vol 455-456 ◽  
pp. 650-654 ◽  
Author(s):  
He Yi Ge ◽  
Jian Ye Liu ◽  
Xian Qin Hou ◽  
Dong Zhi Wang
Keyword(s):  
Mechanical Properties ◽  
Water Absorption ◽  
Thermal Shock ◽  
Thermal Shock Resistance ◽  
Sintering Temperature ◽  
Fiber Composite ◽  
Physical And Mechanical Properties ◽  
Composite Ceramics ◽  
Shock Resistance ◽  
Absorption Measurements

The physical and mechanical properties of nanometer ZrO2-ZrO2fiber composite ceramics were studied by introduction of ZrO2fiber. ZrO2composite ceramics at different sintering temperature was investigated by porosity and water absorption measurements, flexual strength and thermal shock resistance analysis. Results showed that ZrO2composite ceramics containing 15 wt% ZrO2fiber with sintering temperature of 1650°C exhibited good mechanical properties and thermal shock resistance. The porosity and the water absorption were 8.84% and 1.62%, respectively. The flexual strength was 975 MPa and the thermal shock times reached 31 times. Scanning electron microscope (SEM) was used to analyze the microstructure of ZrO2composite ceramics.

An investigation on the deterioration of physical and mechanical properties of granite after cyclic thermal shock

Geothermics ◽  
2021 ◽  
Vol 97 ◽  
pp. 102252
Author(s):  
Ning Pai ◽  
Ju Feng ◽  
Su Haijian ◽  
He Zequan ◽  
Xiao Meng ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Thermal Shock ◽  
Physical And Mechanical Properties

scholarly journals An Evaluation of Mechanical Properties of Carbon Materials by Hardness Test

TANSO ◽  
1993 ◽  
Vol 1993 (156) ◽  
pp. 15-21 ◽  
Author(s):  
Tatsuo Oku ◽  
Shinya Ohta ◽  
Motokuni Eto ◽  
Koji Kuroda ◽  
Takeshi Tanamura
Keyword(s):  
Mechanical Properties ◽  
Carbon Materials ◽  
Hardness Test
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