Results 1 to 10 of about 1,483,802 (353)

Numerical Investigation of the Influence of Roof-Cutting Parameters on the Stability of Top Coal Gob-Side Entry Retaining by Roof Pre-Fracturing in Ultra-Thick Coal Seam

Energies, 2023
Gob-side entry retaining by roof cutting, a pillarless mining technique, plays a critical role in maintaining continuous production, rapid connection, and enhancing the coal recovery rate in fully mechanized top coal caving working faces.
Yongkang Yang, Peipeng Gao, Chao Zhang, Chenlong Wang   +3 more
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Development of an Impact Energy Absorption Structure by an Arc Shape Stroke Origami Type Hydraulic Damper

Shock and Vibration, 2023
Cylindrical hydraulic dampers used to reduce impacts and vibrations typically have linear strokes. In this study, a new arc-shaped stroke-type origami hydraulic damper with a nonlinear damping performance was proposed.
Jingchao Guan, Yuan Yao, Wei Zhao, Ichiro Hagiwara, Xilu Zhao   +4 more
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Timely and atomic-resolved high-temperature mechanical investigation of ductile fracture and atomistic mechanisms of tungsten

Nature Communications, 2021
High-temperature deformation of materials is challenging to evaluate. Here the authors develop a novel device that allows atomic resolved in situ high temperature mechanical tests inside a transmission electron microscope and reveal ductile fracture of a
Jianfei Zhang, Yurong Li, Xiaochen Li, Yadi Zhai, Qing Zhang, Dongfeng Ma, Shengcheng Mao, Qingsong Deng, Zhipeng Li, Xueqiao Li, Xiaodong Wang, Yinong Liu, Ze Zhang, Xiaodong Han   +13 more
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Measurement Uncertainty and Representation of Tensile Mechanical Properties in Metals

Metals, 2021
The International Organization for Standardization Technical Committee for Metallic Materials—Tensile Testing stated in 2011 that temperature and strain rate variations would induce a change in the results of tensile tests, termed as the measurement ...
Tingdong Xu, Kai Wang, Shenhua Song
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Aerogels for Thermal Protection and Their Application in Aerospace

Gels, 2023
With the continuous development of the world’s aerospace industry, countries have put forward higher requirements for thermal protection materials for aerospace vehicles.
Runze Jin, Zihan Zhou, Jia Liu, Baolu Shi, Ning Zhou, Xinqiao Wang, Xinlei Jia, Donghui Guo, Baosheng Xu   +8 more
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A comparative study of rafting mechanisms of Ni-based single crystal superalloys

Materials & Design, 2020
It is known that Ni-based superalloys experience microstructural rafting during high temperature straining. This paper presents a comparative study of the different rafting models by means of finite element modeling and experimentation investigation.
Haibo Long, Sam R. Bakhtiari, Yinong Liu, Shengcheng Mao, Hua Wei, Yanhui Chen, Ang Li, Deli Kong, Lu Yan, Luyan Yang, Ze Zhang, Xiaodong Han   +11 more
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Mechanical Spark Electrostatic Property Testing Method

Management Systems in Production Engineering, 2023
The article describes an attempt to assess the electrostatic properties of mechanical friction-induced sparking. Such sparks are the cause of numerous accidents in hard coal mines.
Kędzierski Przemysław
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Atomistic mechanism of phase transformation between topologically close-packed complex intermetallics

Nature Communications, 2022
It is challenging to study how topologically close-packed phases (TCPs) transform between one phase to another. Here the authors use atomic-resolved tools to look at the transformation between μ and P phases, revealing an intrinsic link between seemingly
Huixin Jin, Jianxin Zhang, Pan Li, Youjian Zhang, Wenyang Zhang, Jingyu Qin, Lihua Wang, Haibo Long, Wei Li, Ruiwen Shao, En Ma, Ze Zhang, Xiaodong Han   +12 more
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Misfit strain-induced mechanical cracking aggravating surface degradation of LiCoO2

Materials Research Letters, 2023
Cycling-induced cathode interfacial degradations are usually attributed to chemical process, while the physical effect is overlooked to a large extent. Herein, we investigate the failure mechanism of LiCoO2 cathode and reveal that misfit strain plays a ...
Yuyuan Jiang, Yuyang Lu, Zhengfeng Zhang, Lige Chang, Jinhui Li, Xiao Han, Lin Gan, Yong Ni, Manling Sui, Pengfei Yan   +9 more
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TaxiInt: Predicting the Taxi Flow at Urban Traffic Hotspots Using Graph Convolutional Networks and the Trajectory Data

Journal of Electrical and Computer Engineering, 2021
Taxi flow is an important part of the urban intelligent transportation system. The accurate prediction of taxi flow provides an attractive way to find the potential traffic hotspots in the city, which helps to avoid serious traffic congestions by taking ...
Jinmao Zhang, Huanchang Chen, Yiming Fang   +2 more
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