Materials Literature
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Experiments have been conducted to investigate the effect of the degree of plastic deformation on the electrical resistance and thermal conductivity of Al-Mg-Si (6063) alloy. Thirty six samples of the 6063 alloy were used in all for the experiments (three samples constituted a group and twelve groups were instituted i…
The characteristics of pollution accumulation on naturally polluted insulators are fundamental for drawing pollutant distribution maps for power systems. Hence, taking some insulator strings on Zhejiang overhead transmission lines as samples, we investigated the natural pollution accumulation of insulators. Using stat…
To promote the detection sensitivity of the electric field mapping method, we set up an experimental system based on electro-optic electric field sensors for the defect detection of composite insulator. Then we performed simulative defect detection experiments and got the axial electric field distribution with depress…
The tungsten rod with a purity of 99. 955% was purified by using a 250 kW electron beam melting furnace and the morphology,purity and micro-hardness of the raw tungsten rod and melted tungsten ingot were observed and measured by scanning electron microscopy( SEM),inductively coupled plasma atomic emission spectrometry…
In this paper, a general linear time-varying multiple-axis (LTVMA) vibration model of shield tunnel boring machine (TBM) cutterhead driving system is established. The corresponding multiple inputs and multiple outputs (MIMO) state-space model is also presented. The linear vibration model is analysed, and the vibration…
Non-woven hybrid meshes based on poly( l -lactide- co - d,l -lactide) ( dl -PLA) and β-tricalcium phosphate (β-TCP) were fabricated and comprehensively characterized. Stock suspensions of β-TCP powder in dl -PLA acetone solutions were used for the electrospinning process. Structure, morphology and thermal properties o…
Co-based full Heusler alloys have attracted significant attention due to their high spin polarisation and successful integration as electrodes in magnetic tunnelling junctions and current-perpendicular-to-plane spin valves (CPP-SV)._Further improvement of the CFMS based CPP-SVs requires a fundamental understanding of…
Argon ion sputter etching was applied to steels and copper alloys at a radio frequency power of 150 or 250 W for 0.9 to 10.8 ks. Cone- or ridge-shaped protrusions with many secondary fine protrusions were formed on the surface. The sizes of the protrusions were typically comparable to the wavelength range of visible l…
Boehmite with varied morphologies was successfully synthesized from aluminum ammonium sulfate hydrate and urea, as well as poly-glycol-2000 by hydrothermal method. The experimental results show that boehmite microspheres, microfibers and 3D hierarchical structured AlOOH can be fabricated only by adjusting hydrothermal…
The purpose of this research was to develop a new micro-anode-guided electroplating (MAGE) system equipped by an image-guided positioning controller, to fabricate two-dimensional microstructures. From real-time image, the relative positions of the micro-anode and the microstructures tip can be located and maintained.…
Two novel triphenylamine-containing thiophene derivative monomers, 4-methoxy-4 ' ,4 '' -di(thiophen-2-yl)triphenylamine (MTTPA) and 4-methoxy-4 ' ,4 '' -di(2,3-dihydrothieno[3,4-b][1,4]dioxin-7-yl)triphenylamine (METPA), were successfully synthesized. The corresponding polymers including PMTTPA and PMETPA were electro…
Journal of Anthropology and Archaeology is a peer-reviewed international journal, which publishes original papers promoting theoretical, methodological and empirical developments in the discipline of socio-cultural anthropology.
In this paper, the torque and flux weakening performances of alternative Switched Flux Permanent Magnet (SFPM) machines are experimentally investigated and compared. Firstly, the torque and flux weakening control performances of C-core SFPM machine with/without voltage error regulation are compared. It is shown that t…
Get PDF Email Share Share with Facebook Tweet This Post on reddit Share with LinkedIn Add to CiteULike Add to Mendeley Add to BibSonomy Get Citation Copy Citation Text P. R. Gill and D. G. Stork, "Hardware Verification of an Ultra-miniature Computational Diffractive Imager," in Classical Optics 2014, OSA Technical Dig…
摘要： 用传统的抛光方法很难对细长管内表面进行抛光；利用磁场控制的磁粒刷就可以较容易实现复杂管件内表面的研磨抛光。这种抛光方法是把磁性磨料和油性研磨液的混合物裹附在V形磁铁的两极，在外围磁铁的吸引下将磨料混合物压附在工件的内表面，增大磨料对内壁的研磨力，提高抛光效率。磁极端部开槽的V形磁铁在其开槽处较利于磨料的自发搅拌，使磁性磨料不断更替的对工件内表面进行抛光。通过有限元分析验证V形磁铁端部开槽对研磨压力的影响；从理论上阐述V形磁铁端部开槽后有利于实现磨料的更替，并得到较好的表面质量；最后通过对SUS304管内表面的抛光试验验证理论的正确性。
250℃の高圧水素ガス中でのSUS304鋼の水素脆化感受性を高温・高圧水素ガス中で低ひずみ速度引張試験により調査した．高圧水素ガス中において，準安定オーステナイト系ステンレス鋼であるSUS304鋼は，室温では顕著な脆化を示したが，250℃では室温のSUS316L鋼と同等の軽微な脆化しか示さなかった．水素ガスの導入温度を250℃近傍に維持できれば，圧縮水素ガスを扱う機器や配管の材料として，従来のSUS316L鋼に替えSUS304鋼の使用が可能と考えられる．
One of the degradation diagnostic methods for water tree degradation of XLPE cables is the residual charge method. In this method, a DC voltage is applied to a water tree degraded XLPE cable in order to accumulate space charges in water tree parts of an XLPE cable, and an AC voltage is applied to it in order to releas…
Over the last decade, regulations regarding end-of-life vehicle (ELV) recycling have been introduced in many countries, leading to an increased recycling rate of ELVs. However, steel scrap from ELVs is recycled as a secondary iron source in the steelmaking process with rare consideration of alloying elements loss. Con…
We have performed geometry optimizations of crystal structure and contrasted the calculated results of band structure, density of states, and permittivity of 3C-SiC for four kinds of doped supercell models: undoped, Al-doped, N-doped and Al-N codoped ones, by using the first principles plane wave ultrasoft pseudopoten…
In this program consequence of incorporating blast furnace slag on mechanical properties and durability of resulting fly ash geopolymer paste sample was investigated. The program consisted immersion of geopolymer samples having percentage blast furnace slag ranging from 10 to 20 of fly ash in a 10% magnesium sulfate s…