Materials Literature
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A high altitude flying wing UAV is presented together with test flights performed in Finland in July, 2014 and June, 2015 in support of European Space Agency (ESA) Earth surveillance missions. The UAV uses an innovative inertial autopilot, which is able to automatically steer the flying wing UAV from 30 km altitude to…
Thermal properties of chopped composites are important parameters for determining application and use of this category of materials. An experimental identification for thermal properties of different composite materials was conducted. In order to investigate the effect of fiber, three different chopped fibers with a p…
Natural radioactivity is a source of continuous exposure to human beings. It originates from both extraterrestrial sources and radioactive elements in the earth crust. Assessment of radioactive elements in the study area is very important from different point of view especially for human health. The natural radioactiv…
This paper presents a simulation-based study of ultra-precision turning of hard-to-cut stainless steel 316L. In particular, Finite Element modeling was implemented to simulate the chipping process of stainless steel 316L under restricted process parameters. The aim of this investigation was to understand the underlyin…
Friction stir processing (FSP) is a novel processing technique that is gaining wide recognition for manufacturing nano-dispersed surfaces, which are of high specific strength, hardness, and resistance to wear and corrosion. Herein, four-passes FSP were applied on aluminum alloy 7075 (AA7075) O with and without the add…
Forsterite (Mg2SiO4) is well known to be potential biomedical implants due to its good mechanical properties compared to hydroxyapatite (HA). The fracture toughness of forsterite is exceptionally higher compared to hydroxyapatite (HA) and the values are close to a human femur bone. Several studies also suggested that…
The field of nanotechnologies for biological applications has recently experienced a rapid advance in the status of research. In particular, nanostructures have demonstrated their utility as a tool to obtain a direct interaction with cells. Applications of nanoparticles range from magnetic resonance imaging to drug de…
The first natural nuclear reactor of 1.9 billion year ago –OKLO (West Africa), was discovered in 1972. Its fuel was depleted uranium ore of 0.6-0.44% 235U. It was cooled and moderated by natural water.The first man-made reactor of Fermi design coded as CP-1 ,was operated in 2 dec. 1942. It had no cooling system of any…
High energy ball milling (attritor) was performed to synthesize Cu-50wt.% Fe super saturated solid solution at room temperature. The mechanically alloyed samples have been milled for 24 hrs and examined by X-ray diffraction (XRD) to investigate its microstructure. As a result of mechanical deformation a higher defect…
Some of the advantages of using turning instead of grinding for the finish machining of hardened steel surfaces are: high flexibility, the ability to cut complex surfaces with a single machine set up, cost of the process, and the possibility of turning without cutting fluid. On the other hand, turning is not very suit…
Leather quality depends largely on the physical, mechanical and organoleptic characteristics of the finished leather from which the final articles are manufactured. Tearing strength and ball burst tests are especially relevant for leather goods that will be subjected to significant tearing and bursting stresses during…
O desgaste do dente, que se manifesta com uma grande variedade de graus ou niveis, e uma das anomalias dentarias comumente encontradas em diversas populacoes. A modelagem computacional do problema de contato oclusal pode ajudar na compreensao das interacoes entre os dentes, que gera concentracoes de tensoes. A abordag…
Consumption of power is very linked with the material standard of living and growth of population. The probable world reserves of fossil fuel, (coal, oil and natural gas) may be exhausted sometime by the mid of this century. Therefore, developments of alternative sources of power are required. This can be achieved fro…
This special analysis (SA) evaluates whether the Idaho National Laboratory (INL) Idaho Chemical Processing Plant (ICPP) Low-Level waste stream is suitable for disposal by shallow land burial at the Area 5 Radioactive Waste Management Site on the Nevada National Security Site (NNSS). The INL ICPP Low-Level waste stream…
Abstract Shape memory alloys manifest two distinct characteristics, namely shape memory effect and superelastic effect. They are used in a wide variety of engineering, medical and commercial applications. The use of shape memory alloys in a particular application depends on the shape memory characteristics, viz., shap…
Golbolagh Reservoir is located the east of Kurdistan province with 8.1 Million cubic meters' capacity. This study was conducted for one year to investigate the population structure, diversity and seasonal change of phytoplankton of Golbolagh Lake. Some physicochemical parameters of this water body at each sampling sit…
In this work, the synthesize of graft copolymers containing a functional group (carboxylic group) through mutual radiation grafting method for acrylic acid monomer onto high/ low density polyethylene substrate was investigated. The optimum conditions for radiation grafting were studied. In this regard, the effect of s…
Abstract Review: first‐principles simulations of magnetic materials above the magnetic order‐disorder transition temperature with focus on 3D‐transition metals, their alloys and compdounds; 160 refs.
Abstract Li4(NH2)3Cl is prepared by ball milling of a stoichiometric mixture of LiNH2 and LiCl (400 rpm, 5 h) followed by ball milling with LiH to form a composite.
Abstract Review: 44 refs.