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:应力释放;岩芯直径;地应力;松科2井 中图分类号:TD311; P553 文献标志码:A 开放科学(资源服务)标识码(OSID) 文章编号:1672-7207(2019)12-3106-08 A method of diametrical core deformation analysis and its... principle of diametrical core deformation analysis method(DCDA) in-situ stress testing method, core diameter testing instrument and testing process based on laser rangefinder were introduced......
Structural,Dielectric,and Magnetic Studies on Electrospun Magnesium Ferrite-Polyvinylidene Fluoride Core–Shell Composite FibersS.Dinesh Kumar2,P.Chithra Lekha2,V.Subramanian2,T...-micron(of the order of 150 nm) thick core–shell composite fibers of magnesium ferrite-polyvinylidene fluoride are prepared by electrospinning.The loading of magnesium ferrite is varied from 1 to 10 wt......
; 文献标志码:A 文章编号:1672-7207(2018)12-2939-07 Effect of process parameters on fluidity of polymer melt plasticized by ultrasound JIANG Bingyan... University, Changsha 410083, China) Abstract: In order to test the fluidity of polymer melt plasticized by ultrasound, the ultrasonic plasticization filling experiment with self-designed spiral mold......
; 文献标志码:A 文章编号:1672-7207(2012)05-1628-06 Preparation and properties of PVP/PVDF-HFP microporous polymer electrolyte YANG Bo, LI... and linear scan voltammetry methods. The results show that the optimium mass ratio of PVP to PVDF-HFP is 0.2:1. The liquid absorption rate of the polymer electrolyte is 210%. It shows a good tensile strength......
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; 文章编号:1672-7207(2013)08-3115-06 Preparation and properties of PVDF-Al2O3 micro-porous polymer electrolyte membranes HUANG Silin, GUO Huajun, YANG Bo, LI Xinhai... of 15.15 MPa and ionic conductivity of 0.41 mS/cm. The electrochemical character of the gel polymer electrolyte is stable under 5. 5 V. Key words: polymer electrolyte; Li-ion battery; phase inversion......
Highly efficient anode catalyst with a Ni@Pd Pt core–shell nanostructure for methanol electrooxidation in alkaline mediaPei-shu Yu1,Chun-tao Liu1,2,Bo Feng1,Jia-feng Wan1,Li Li1,Chun-yu Du31. School...), transmission electron microscopy(TEM), and high-resolution TEM(HRTEM) techniques. The experimental results indicate that the average particle size of the core–shell-structured Ni@Pd Pt......
Bending and Twisting Springback Prediction in the Punching of the Core for a Lattice Truss Sandwich StructureWenchun JIANG,Bin YANG,Xuewei GUAN,Yun LUOState Key Laboratory of Heavy Oil Processing... by the punching of the core. In order to simulate the springback accurately, a mixed isotropic-nonlinear kinematic hardening model is used to define the material mechanical behavior during plastic deformation......
J. Cent. South Univ. (2020) 27: 2959-2970 DOI: https://doi.org/10.1007/s11771-020-4521-9 In-site core disking phenomenon and break mechanism of hard marble: Investigation in 2400 m deep-buried... of Springer Nature 2020 Abstract: The core-disk phenomenon has been observed generally in the drilling process under high-stress conditions. This paper presents the in-situ experimental study of the coring......
of core concrete of aixally-loaded steel tubular columns filled with steel-reinforced concrete XIAO A-lin1, HE Yi-bin1, GUO Jian1, 2 (1. School of Civil Engineering, Hunan University, Changsha 410082, China; 2. Institute of Design and Research for Architecture and Structure, Hunan University, Changsha 410082, China) Abstract: The working mechanism and stress characters of core concrete......