Materials Literature
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The structure of a polymeric material has a great influence in many fundamental scientific areas as well as in more applied science, since it affects the diffusion, permeability, mechanical strength, elasticity, and colloidal properties of the materials. The results in this thesis demonstrate that it is possible to fa…
In this study, a homogenization analysis of polyurethane foam to consider the microstructure was conducted. Polyurethane foam test specimens, relative densities of which were 0.21g/cm3, 0.27g/cm3, 0.37g/cm3, were applied to the uniaxial compression tests. An original 2-dimensional simulation program was developed. A p…
We have investigated the formation of multi-layer void structures in Si(001) substrates, applying spontaneous shape changes of high-aspect ratio hole patterns by high temperature annealing. Multi-layer void structures are formed via closure of the hole opening, pinch-off of the vertically elongated closed voids, and c…
以聚乙烯醇（PVA）、聚苯乙烯磺酸（PSSA）和钠基蒙脱土（Na-MMT）为原料，戊二醛（GA）为交联剂，通过溶液共混法制备交联型PVA／PSSA／Na-MMT质子交换复合膜．红外光谱（IR）分析表明，复合膜中PSSA的磺酸基与PVA的羟基发生酯化交联反应，提高了复合膜的稳定性；热重分析（TGA）证明，复合膜具有较好的耐热性；扫描电镜（SEM）显示，MMT在复合膜得到均匀的分散．交联剂戊二醛（GA）和钠基蒙脱土（Na-MMT）提高了复合膜的耐水性与尺寸稳定性．含有质量分数15％PSSA和3％Na-MMT复合膜的钒离子渗透率为1．58×10-6cm0／min．单电池的库伦效率可达43．7％．
Oxy-fuel combustion is an attractive method of reducing CO_2 emission. In oxy-fuel, the high concentrated CO_2 destabilizes the combustion. In this study, the catalytic pre-combustion was used for the improvement of the flame stability in highly concentrated CO_2. The experiments and numerical calculation were perform…
Tema diplomskog rada je „Zaštita od korozije konstrukcije Formule Student“. U teorijskom dijelu opisane su vrste i problematika korozijskih oštećenja, metode zaštite od korozije, a posebno zaštita premazima. Poseban naglasak je dan na zaštitu od korozije u automobilskoj industriji gdje su obrađeni premazi za zaštitu a…
Fatigue properties of TiCrAlSiN/CrN coated high-speed tool steels, JIS SKH51, with different film thickness were investigated under four point bending fatigue tests. Two types of specimens with 2.64 μm (S-2.5) and 5.24 μm (S-5.0) film thicknesses were prepared by AIP (Arc Ion Plating) processing. From the experimental…
Enhancement of the dimensionless thermoelectric figure of merit ZT is predicted theoretically in nanowires. In our study, we developed bismuth nanowires encapsulated in quartz templates. Bismuth nanowires were fabricated by injecting molten bismuth into a nano-scale hole of the quartz template and then recrystallized…
The decrease in fluid resistance is one of the important keys for the purpose of shortening of the sports time record. By wearing of a low resistance swimsuit, it still reminds us that there were a lot of large time record shortening in swimming races of Beijing Olympic. The development of low resistance cloth as the…
In order to make clear the mechanism of the directional coarsening (rafting) of y' phases in Ni-base superalloys under uni-axial tensile strain, molecular dynamics (MD) analysis was applied to investigate dominant factors of strain-induced anisotropic diffusion of Al atoms. The diffusion constant of Al atoms was chang…
In the present paper, fiber optic sensors were employed for measurement of cure index of GFRP laminates. The refractive-index sensors were embedded in laminates during hot press molding. At first, the sensors were embedded along 0 and 90 directions of unidirectional laminates and uniform temperature was applied to mat…
This paper describes development of the detailed and phenomenological numerical simulation code named JUPITER for predicting the molten core behavior including solidification and relocation based on the three-dimensional multiphase thermal-hydraulic simulation models to precisely investigate molten core relocation beh…
在铜表面上的（Ni-P）-SiO2化学复合镀中,将Al2（SO4）、CoSO4和CrCl3作为纳米SiO2分散剂添加到镀液中.由分光光度计测定发现少量金属盐对纳米SiO2粒子在镀液中的分散稳定性均有一定程度提高.通过光电子能谱检测发现,Al2（SO4）3作为纳米SiO2分散剂的（Ni-P）-SiO2化学复合镀层中纳米SiO2沉积效果优于其他分散剂.0～8nm深度刻蚀检测表明镀层中纳米SiO2质量分数稳定.实验表明,以Al2（SO4）3作为分散剂最佳质量浓度为3.06～ 4.08 g/L.
应用熔融制样-X线荧光光谱法测定Al2O3中主要杂质Fe2O3,Si O2和Na2O的含量。采用Li2B4O7挂壁制备熔剂坩埚,分散剂溶解并分散Al2O3样品,蒸干过量水分后加混合熔剂（Li2B4O7∶Li BO2以12∶22的质量比混合）,低温蒸干,并加热熔融制成厚度为2.5 mm的玻璃状熔片,用X线荧光光谱仪对Al2O3中Fe,Si,Na等元素同时进行测定。通过对此方法精密度及精确度的考核,其测量结果与化学值相吻合,三者杂质的标准偏差均小于10%,测定值与已知值之间的误差均符合标准规定。
Resin transfer molding (RTM) is a low-cost-manufacturing method of composite materials by injecting the liquid resin into a mold. Analyzing the filling process of RTM is indispensable to establish an appropriate mold design. In this paper, a numerical simulation of the filling process is performed by using a combinati…
The ecological danger of road infrastructural complexes for the environment (gasoline stations, parking, and fitting of tyre complexes) by defining snow cover level of pollution by mineral oil on the territory of these technical objects is investigated. It is established that among the investigated road infrastructura…
Electric and mechanical properties of the electroplated copper thin film interconnections vary drastically depending on not only the size of grains but also the crystallographic characteristics of grain boundaries. In particular, the effect of the quality of grain boundaries plays very important role on the physical p…
To supply enough nuclear fuel (Pu(plutonium)& <233>^U) in near future, this paper proposes Multiple Small Modular Reactors(SMRs) Power Plant of fast metal breeder. This Power Plant has many (example 36) SMRs, one SMR is equal to one fuel assembly of conventional FBR. This Power Plant always can keep full load without…
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The EHRO-N team of JRC-IET provides the EC with essential data related to supply and demand for nuclear experts based on bottom-up information from the nuclear industry. The current paper deals with an alternative approach to derive figures for the demand side information of the nuclear workforce. Complementary to the…