Effect of Forging on Microstructure, Mechanical Properties and Acoustic Emission Characteristics of Al Alloy (2014): 10 wt.% SiCp Composite

2019 ◽  
Vol 28 (5) ◽  
pp. 2779-2787
Author(s):  
Amulya Bihari Pattnaik ◽  
Satyabrat Das ◽  
Bharat Bhushan Jha
Keyword(s):  
Mechanical Properties ◽  
Acoustic Emission ◽  
Al Alloy ◽  
Emission Characteristics

scholarly journals Research on mechanical properties and acoustic emission characteristics of rock beams with different lithologies and thicknesses

2021 ◽  
Vol 18 (8) ◽  
Author(s):  
Tong-bin Zhao ◽  
Peng-fei Zhang ◽  
Wei-yao Guo ◽  
Ya-xun Xiao ◽  
Yong-qiang Zhao ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Acoustic Emission ◽  
Emission Characteristics

Strength Properties of Thin Alumina Coatings on 4043 Aluminum Alloy

2009 ◽  
Vol 610-613 ◽  
pp. 668-673 ◽  
Author(s):  
Man Feng Gong ◽  
Sheng Ru Qiao ◽  
Cheng Yu Zhang ◽  
Hao Ji
Keyword(s):  
Mechanical Properties ◽  
Tensile Strength ◽  
Acoustic Emission ◽  
Aluminum Alloy ◽  
Adhesive Strength ◽  
Strength Properties ◽  
Al Alloy ◽  
Long Distance ◽  
Alumina Coatings ◽  
Charge Coupled Device

Alumina (Al2O3) coatings in the thickness of 10μm and 15μm were prepared on the 4043 Al-Si alloy substrates by electroplating technology. Multiple mechanical properties of alumina coatings were evaluated by various techniques: the long distance microscope, Charge Coupled Device microphotographics, acoustic emission and strain foils. For the electroplating alumina coatings, the in-plane tensile strength is 68.1 MPa, the cohesive strength is 96.2 MPa and the adhesive strength is over 22.7 MPa. Three different directional microcracks, which are relative to the tensile directional and corresponding to two fail modes in the alumina (coatings)/4043 Al-alloy (substrate) system, were found.

scholarly journals Experimental Study on Mechanical Properties and Acoustic Emission Characteristics of Water Bearing Sandstone under Stable Cyclic Loading and Unloading

2020 ◽  
Vol 2020 ◽  
pp. 1-15
Author(s):  
Xinzhan Qin ◽  
Yu Zhou ◽  
Manchao He
Keyword(s):  
Mechanical Properties ◽  
Acoustic Emission ◽  
Cyclic Loading ◽  
Water Content ◽  
Coal Mines ◽  
Surrounding Rock ◽  
Emission Characteristics ◽  
Cyclic Loading And Unloading ◽  
Loading And Unloading ◽  
Pumped Storage

Due to the adjustment of energy structure, a large number of coal mines are abandoned. Considering the environmental and economic effects, many experts proposed to use the abandoned mine cavern as the reservoir of the pumped storage power station. Furthermore, considering the long-term effects of repeated pumping and drainage and hydrodynamic pressure on the surrounding rock in coal mines, a large amount of sandstone was collected from the Ruineng coal mine in Yan’an city to carry out a series of laboratory tests. Through uniaxial compression testing of rock samples with different water content rates, combined with acoustic emission (AE) analysis, the strength softening and macrodeformation characteristics are obtained, and the influence of water content on acoustic emission characteristics is clarified. The mechanical properties of water bearing rock under cyclic loading and unloading experiments with varying upper limits are obtained using a triaxial test system, and the precursory information of rock failure is captured, providing significant guidance for stability analysis and instability warning for surrounding rock in pumped storage power stations.

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