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High temperature stability of Eu2+-activated nitride red phosphors胡运生,庄卫东,何华强,刘荣辉,陈观通,刘元红,黄小卫National Engineering Research Center for Rare Earth Materials, General Research Institute for Nonferrous... 300 oC) to investigate the dependence of their luminescence performance and structure variability on the temperature. By photoluminescence spectra, X-ray diffraction(XRD) and thermogravimetry......
High temperature stability of Eu2+-activated nitride red phosphors胡运生,庄卫东,何华强,刘荣辉,陈观通,刘元红,黄小卫National Engineering Research Center for Rare Earth Materials, General Research Institute for Nonferrous... 300 oC) to investigate the dependence of their luminescence performance and structure variability on the temperature. By photoluminescence spectra, X-ray diffraction(XRD) and thermogravimetry......
Energy analysis of stability of twin shallow tunnels based on nonlinear failure criterionZHANG Jia-hua(张佳华), XU Jing-shu(许敬叔), ZHANG Biao(张标) (School of Civil Engineering, Central South University, Changsha 410075, China)Abstract:Based on nonlinear Mohr-Coulomb failure criterion, the analytical solutions of stability number and supporting force on twin shallow tunnels were derived using upper......
J. Cent. South Univ. Technol. (2008) 15: 888-894 DOI: 10.1007/s11771-008-0162-0 Simulation of failure process of jointed rock ZHANG Xiu-li(张秀丽)1, JIAO Yu-yong(焦玉勇)1, ZHAO Jian(赵 坚)2 (1...; Abstract: A modified discontinuous deformation analysis (DDA) algorithm was proposed to simulate the failure behavior of jointed rock. In the proposed algorithm......
Mechanical Behavior and Failure Mechanism of 2.5D(Shallow Bend-joint, Deep Straight-joint) and 3D Orthogonal UHWMPE Fiber/Epoxy Composites by Vacuum-assistant-resin-infused赵晓琳1,2,DU Jianhua2,YANG... were fabricated by a vacuum assisted resin infused(VARI) processing technology. The curing condition of composites was at a cure temperature of 80 ℃ for 3h in a drying oven. The characteristics of 2.5D......
High Temperature Oxidation as a Production Route for Electronic Materials () 摘要:Oxidation of metallic components often results in degradation and structural failure, preven-tion is therefore... in dry or wet atmosphere is a popular way for growth of multi-functional SiO films on Si wafers. Recently, oxidation processes under controlled conditions (atmosphere, temperature, and time) are used......
J. Cent. South Univ. (2016) 23: 2230-2241 DOI: 10.1007/s11771-016-3281-z Remaining useful life estimation based on Wiener degradation processes with random failure threshold TANG Sheng-jin(唐圣金), YU... RUL estimation, the randomness of the failure threshold has not been studied thoroughly. In this work, by using the truncated normal distribution to model random failure threshold (RFT), an analytical......
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J. Cent. South Univ. (2021) 28: 1857-1874 DOI: https://doi.org/10.1007/s11771-021-4735-5 Energy evolution mechanism and failure criteria of jointed surrounding rock under uniaxial compression LI... the energy evolution mechanism and failure criteria of cross-jointed samples containing an opening during deformation and failure based on the uniaxial compression test and rock energy principle......
J. Cent. South Univ. (2016) 23: 3312-3321 DOI: 10.1007/s11771-016-3397-1 Model test to investigate failure mechanism and loading characteristics of shallow-bias tunnels with small clear distance LEI..., a tunnel excavation simulation testing system under typical unsymmetrical loading conditions was established. Using this system, the failure mechanism of surrounding rock of shallow-bias tunnels......