Materials Literature
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Cellulose nanofiber composites cause less damage to the environment, but poor strength is a major drawback. Therefore we focused on the orientation of nanofibers as a way to strengthen the composite material. By unidirectionally orienting fibers, mechanical properties can be improved as reported in previous studies. T…
2 Szegedi Tudományegyetem, Anyag-és Oldatszerkezeti Kutatócsoport, 6720 Szeged, Dóm tér 7-8
Polyhydroxyalkanoate (PHA) is a microbially-derived plastic. In this study, a polycaprolactone (PCL) pellet was blended with a PHA-based pellet to improve ductility and tensile strength because PCL is a bioabsorbable and biodegradable polymer having high ductility. When the mixing ratio of PCL was 50%, the elongation…
To investigate the safety design criteria of heat utilization system for the HTGRs, it is necessary to evaluate the effect of fluctuation of thermal load on the reactor. The nuclear heat supply fluctuation test by non-nuclear heating was carried out by devising a new test procedure to simulate the nuclear heat supply…
The explosion characteristics of a composition pressure vessel comprised of three kinds of different CFRP layer of the winding angle are examined. A location of the fracture origin is identified using fractographic technique from the length of the piece of the CFRP in the burst vessel. Also the fracture initiation loc…
An entry from the Cambridge Structural Database, the world’s repository for small molecule crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely available from the CCDC and typically includes 3D coordinates, cell parameters, space grou…
ボロン酸，およびヨードアリールをそれぞれの側鎖に有した高分子ゲルは，金属触媒を添加することにより接着した．これは高分子ゲル界面における鈴木・宮浦クロスカップリング反応によるものであり，ソフトマテリアルの界面で共有結合が形成され，二つの材料を接着することができた．このような材料間の接着は他の化学反応にも適用できる．銅触媒を用いたアジド–アルキン環化付加反応(CuAAC反応)や薗頭クロスカップリング反応を用いても，接触界面における共有結合の形成によって接着できた．この接触界面での共有結合形成は水中および有機溶媒中でも達成できる．さらに難易度の高い異種材料間の接着を試みた．高分子ゲルと無機材料である硬質ガラス基板のそれぞれにボロン酸また…
Very high cycle fatigue properties of β-titanium alloy were evaluated by using an ultrasonic fatigue testing machine. A S-N diagram and fracture morphology of β-titanium alloy Ti-22V-4Al in very high cycle region were investigated. Fatigue failure in very high cycle region was observed. The influence of cyclic frequen…
The roles of grain boundaries in the plastic deformation of hexagonal close packed metals are not still clear despite of its importance, especially, for sufficiently small size of grains. In this work, we performed molecular dynamics simulations of uniaxial deformation tests of magnesium bicrystals with [1^^-100] symm…
Laminated textile FRP has geometric variability such as scattered volume fraction and lamination misalignment due to molding process. In this study, by modeling the fractured microstructural geometry, focusing on the distributed volume fraction, misalignment, Monte Carlo FEM simulation has been carried out to predict…
In July 2013, Nuclear Regulation Authority (NRA) in Japan published new regulatory requirements for the commercial light water reactors (LWR) and also prototype power generation reactors such as the sodium-cooled fast reactors (SFRs) of "Monju" in consideration of severe accidents (SAs) based on TEPCO Fukushima Daiich…
In general, a polymer insulator applied high voltage reaches a complete breakdown through a extension of electrical trees. We showed in previous paper that metal hydroxide has a restraint effect on the growth of an electrical tree and that the lifetime of the polymer insulator can be improve. Calcium carbonate, endoth…
Plastic forming for magnesium alloy requires warm working. However, warm working causes micro-structure change or strength decreasing to mechanical characteristics grant material by work hardened, or grain refinement. To study warm working conditions, it is important to find out β phase (β-Mg17Al12) transition of magn…
The gemini surfactant polyamide derived from Hexa methylene diamine and ethylene diamin tetraacetic acid [(2,2'-1,22-diamino-8,15-dioxo-7,10,13,16-tetraazadocosane-10,13-diyl) diacetic acid ] was synthesized according to the previous our work [1]. A series of electrochemical measurements, including corrosion potential…
The C 60 fullerene derivatives with oxime moieties are prospective as complexation agents, biologically active compounds and precursors for the synthesis of new fullerene adducts with tunable properties. There are no data on the complex compounds of the C 60 fullerene oximes with ion metals. At the same time, other fu…
鋳物廃砂由来の環境修復資材であるビオトープサンド（BTS）を閉鎖系水域のアオコ対策や水質改善に活用するために，実際のため池において実証試験を行った。２つのBTS活用方法として，浮上堆積したアオコへのBTS散布とBTSを充填したろ過装置の導入を行った。その結果，実証試験した2年間を通じて，ため池におけるアオコと水質は改善された。BTS散布とろ過装置の導入を併用することは，浮上堆積するアオコを沈降させる効果があり，ろ過装置の導入は，水質を改善する効果があると考えられた。さらに，魚や水生植物に対する安全性をラボスケールの育成実験により検討した結果，BTSは魚や水生植物の生育に悪影響を及ぼさないことが確認された。なお，BTSの存在によって…
V teoretické části této práce byly shrnuty literární postupy týkající se příprav nitroderivátů benzofuroxanu. Hlavním cílem byl v této práci 4,6 dinitrobenzofuroxan. Tyto zdroje byly roztříděny s ohledem na jejich použitelnost při budoucí průmyslové výrobě, tedy zejména na jednoduchost a ekologičnost. V praktické část…
In order to meet the social demands for environmental protection and resource conservation, it is necessary to improve the load-carrying capacity of power transmission gears and to make the gears lightweight. From the standpoint of these requests, not only the gear materials but also the gear manufacturing methods inc…
In ICONE22, the authors presented the Integrated Head Assembly (IHA) design concept implemented at Callaway Nuclear Power Plant in Missouri, USA. The IHA concept is implemented to reduce the outage duration and the associated radiation exposure to the workers by reducing critical path time during Plant Refueling Outag…
This paper reports the preliminarily experimental results of low velocity soft-body projectile made of gelatin solution impact test on a thin plate at impact speed of about 120 m/s. An experimental investigation of low velocity impact was performed by using a ballistic range at Institute of Fluid Science, Tohoku Unive…