Materials Literature
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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…
Potentiostatic etching method has been suggested as a technique for detection of pre-existing plastic strain of type 316 stainless steel which is strained at 250℃ that is a temperature assumed nuclear reactor water. After potentiostatic etching (1N HNO_3, -600mV_ , 20min, 35℃), slip lines appear as etched lines on the…
The eco-efficiency of municipal wastewater treatment plant and pumping station in Japan was studied within the confine of the maintenance and management phase. We evaluate greenhouse gas emission or maintenance and management cost by eco-efficiencies defined as the ratios of the GHG emission or the cost to the populat…
We have performed the experimental investigation on macroscopic electric polarization of a liquid crystal under shear flow between concentric cylinders. The liquid crystal is filled between the concentric cylinders, and sheared by rotating the inner cylinder. We successfully measured the voltage between the cylinders…
The composite journal bearings which have outer layer with high strength and inner layer with high wear resistance can be used as bearing materials in the industrial high-power machine. The bearing prepared by unification forming of two different mixed powders were compacted in the shape of a double-layers cylinder an…
This paper deals with the optimization of blade stiffened composite panels. The main objective of the research is to make response surfaces for the constraints. The response surface for warping thermal deformation was previously made for a fixed dimension composite structure. In this study, the dimensions of the blade…
本報では,時間方向に陰解法,空間方向に直交基底気泡関数要素安定化法を採用し,Phase-Fie性dモデル自由表面問題で現れるNavier-Stokes方程式,Cahn-Hilliard方程式を数値的に安定,かつ,精度良く求めることのできる計算手法を提案する.
It is well known that mechanical stimulation regulate the biological functions such as differentiation. In particular many researchers have been reported that mechanical stretch can regulate the differentiation of bone marrow mesenchymal stem cells (BMSCs) into tenocytes. But rigorous relationship between cell differe…
We experimentally demonstrate the conditions where rare-gas cluster ion dissociates depending on the elastic response at the collision. Cluster ion consisting of thousands of argon atoms collide with the five kinds of metals at an incident energy per atom of less than 10 eV. The prominent ions in the mass spectra dete…
We investigated the impact of the refractive index of surface structre fabricated on a sapphire substrae on the light extraction efficiency of a light-emitting diodes (LEDs) was investigated. The surface structre was made by SiOxNy which was deposited by Plasma-enhanced Chemical Vapor Deposition (PE-CVD). The refracti…
Purpose of this study is to improve the inter-laminar fracture properties of the carbon fiber reinforced plastic laminates by addition of fine particle to brittle matrix resin. In this study, vinyl ester was used for the CFRP matrix and two types of particle, alumina and silicon rubber were used for the modifier. Thre…
Glodanje je postupak obrade odvajanjem pri čemu se koriste alati s određenom geometrijom oštrice, a presjek odvojene čestice je promjenjiv i ovisi o parametrima obrade. Glavni parametri obrade su brzina rezanja, posmak i dubina obrade. Izvodi se na alatnim strojevima, glodalicama, pri čemu glavno gibanje, i to rotacij…
A single roll caster equipped with a scraper was proposed, designed and assembled. Properties of this caster and of the strip cast by this caster were investigated. 5182 aluminum alloy was cast into the strip. This caster could cast the strip at the speeds ranging from 20m/min to 40m/min. Strip thickness could be cont…
The tensile deformation behavior of polytetrafluoroethylene (PTFE) hollow fiber membranes was studied. The present PTFE membrane has sub-micron pores with open cell structure, which plays a critical role of water purification. One of the main challenges of water purification is that the pore structure is covered with…
This paper reports the effect of ppb-level non-ionic surfactant, Triton-X-100, on the etching of Si {100} and Si {110} in 5wt%,15wt%,30wt%,48wt% KOH solution. In pure 5 wt% KOH solution, micro-pyramids appear on the Si {100} etched surface. However, in 5wt%KOH with addition of ppb-level of Triton, the etched surface b…
Bulk nanocrystalline nickel dispersed homogenously with nano-scale hard WO_3 particles has been successfully synthesized by a novel synthesis using electrodeposition. In this synthesis, ionized W_4^<2-> molecules in an electrolyte were transformed into WO_3 particles and embedded into a nanocrystalline nickel matrix d…
The Japan Soclety of Mechanlcal Englneers
プラスチック射出成形は,プラスチック製品の成形で最も重要な成形方法の一つである.プラスチック製品は,製品品質と製造コストの両面で,プロセスパラメータの影響を受けるため,最適なプロセスパラメータを求めることは重要である.しかし,プラスチック射出成形は非線形現象であるため,最適なプロセスパラメータを求めることは,容易とは言い難い.近年では,プラスチック射出成形シミュレーションと,最適化を用いた研究が関心を集めている.本論文ではRadial Basis Function network(RBFネットワーク)を用いた逐次近似最適化を行うことで,シミュレーション回数を少なくしつつ,最適なプロセスパラメータを求めることを提案する.特に.多目的…
Lotus effect is familiar phenomenon which the lotus leaf shows the superhydrophobicity. The superhydrophobic surface is widely studied in order to improve the antifouling surface. In this study, we focused on the surface pattern to improve the antifouling property. Generally, the leaf of taro shows superhydrophobicity…
Using two different types of ionomers which are composed of Nafion and hydrocarbon (HC), we constructed systems of the ionomers on Pt catalyst surface, and investigated water content dependence on oxygen permeability in the ionomers using molecular dynamics simulations. We have found that the oxygen permeability of th…