Search Options

Sort by:

Sort search results by

Publication Type:

Publication Type filter

Open access:

Publication Date:

Periodicals:

Periodicals filter

Search results

Online since: August 2014
Authors: Xie Bin Zhu, Jing Chen, Zhong Jia Huang
Study on Nanometer ATO Powder Prepared with Citric Acid as Dispersant and its Conductive Properties Xiebin Zhu1, a *,Jing Chen1, b, Zhongjia Huang1, c 1.
Anhui Polytechnic University, School of Mechanical and Automotive Engineering Anhui Polytechnic University, Wuhu City, Auhui province, China.
This because with heat treatment temperature increased, crystal structure tended to be complete and the grain got good development and electron mobility was affected by the crystal diffraction aberration [13].
A study on the influencing factors in the preparation of bismuth-doped Tin Oxide nano-powders by co-precipitation [J].FineChemicals, 2011, 28(9):843-847
Nano structure ATO and composite prepared and its electrochemical properties [D].
Online since: June 2019
Authors: Jia Wang, Cheng Lin Liu
Introduction The traditional inorganic material, graphite, is an ideal electrode material and has been widely used in electrolysis of molten chlorides, due to its characteristics of excellent mechanical property, good electrical conductivity, oxidation resistance, flame resistance, high-temperature resistance, anti-corrosion, and so on [[] Lakin J R.
Therefore, it is significant to investigate and optimize the graphitization process of amorphous materials for improving graphite properties, reducing energy consumption and promoting industrial production, such as magnesium electrolysis.
The factors affecting graphitization process of carbon materials include temperature [[] Weisenberger M, Martin-Gullon J, Vera-Agullo J, et al.
Study on the preparation and properties of graphite anode for magnesium electrolysis.
Besides temperature, another important factor that influents the graphitization of carbon materials is the coexistence.
Online since: October 2022
Authors: Klára Křížová, Mazán Tomáš
In case of comparison with plain concrete and structural properties, it is possible to increase the load carrying capacity of the structure by 14%.
Where specific properties such as good thermal insulation properties or refractoriness are required, the selection of individual raw materials is crucial.
Aluminous cement shows the best high temperature resistance properties.
This characteristic can significantly affect the rheology of fresh concrete and the strength of the concrete.
[11] Hager, I., Behavior of high performance concretes at high temperature – evolution of mechanical properties, PhD thesis (in french), Ecole Nationale des Ponts et Chaussées, november 2004, 182 p.
Online since: August 2013
Authors: Ai Feng Zhang, Xiang Li, Yang Liu
Because of its mechanical characteristics between the continuous girder bridge and cable-stayed bridge, it is also known as "partial cable-stayed bridge".
While modeling, three element types are adopted on the basis of mechanical characteristics of low-pylon cable-stayed bridge and analysis on different element types.
This thesis adopts Changshan Bridge as engineering background, to analyze two geometric nonlinear influence factors including cable sag effect and large deformation effect.
Gravity sag deformation is additional deformation under the sag effect, and the elastic deformation is only related to material properties.
Equivalent modulus of elasticity will be affected by three factors including material deformation, the variations of the structural elongation and sag.
Online since: November 2015
Authors: Eberhard Abele, Christian Bölling, Sebastian Güth
Figure 1: Main uncertainty factors during production process (5Ms) Thereby, the category ‘milieu’ includes the uncertainty from the environment such as temperature gradients in plants, excitations by other machines or air humidity effects.
Finally, the workpiece material properties have to be treated as variables due to material inhomogeneity and strength gradients.
Figure 2: Uncertainty factors during the reaming process The uncertainty within the process chain hole making and hole finishing can be mainly described by three occurring process errors (Fig. 2).
These two uncertainty factors have been considered and investigated in various research projects [1,3,4,5].
All tests are carried out on material GJL-250 which has similar material properties compared to the common valve guide.
Online since: July 2013
Authors: Roberto G. Citarella, G. Cricrì, E. Armentani
(Problem 3) Even if the panel is made of alternate bonded composite and metal layers, only one panel is modelled in the numerical analysis (Fig. 17), with global thickness and mechanical properties calculated with the “rule of mixture”.
Skin and doubler have the material properties of Al 2024 T3 kin and doubler have the material properties of Al 2024 T3ct “IARCAS and Al 2017-NAS 1097.
The assembly component dimensions and rivet mechanical properties are reported in Table 2.
Assembly component dimensions and rivet mechanical properties.
The propagation analysis is based on the NASGRO3 formula (eqn. 12), where the fatigue material properties, are related to the Al 2024 T3 (all the analysed cracks will affect the only skin).
Online since: February 2013
Authors: Ying Zhang, Sheng Fei Zhou, Zu Zheng Lin
Cotton and bast fiber image segmentation based on mathematical morphology Ying Zhang1,a, Shengfei Zhou 2,b, Zuzheng Lin1,c 1 Department of Mechanical Engineering, Lushan College of Guangxi University of Technology, Liuzhou, Guangxi, 545616, China 2 School of Mechanical Engineering, Hubei University of Technology, Wuhan, Hubei, 430068, China aguyi309@163.com, bwwwzhoushengfei@163.com, cfengxiang886@163.com Keywords: Fiber detection; Image segmentation; Mathematical Morphology Abstract: Traditional cotton and bast fiber detection using artificial methods.
Image segmentation algorithm is based on one of the two properties of gray: discontinuity and similarity.
The reconstructed image can remove some small noise while does not affect the object’s whole shape.
Choosing the structure element is the key factor in the morphological operation, the shape and size of structure element will affect the image operate effect.
Online since: May 2005
Authors: A.E. Belyaev, Petr M. Lytvyn, Raisa V. Konakova, Victor V. Milenin, Mykola S. Boltovets, V.N. Ivanov, A.Yu. Avksentyev, A.G. Borisenko, O.A. Fedorovitsh, Ya.Ya. Kudryk, A.V. Sachenko, Yu.N. Sveschnikov
This feature together with good matching of thermo-mechanical parameters of ТiВx and GаN, as well as excellent barrier properties of the borides with respect to the gold, provides considerable enhancement of operating temperature comparing to conventional contact systems based on polycrystalline barrier layers [11].
At the same time conventional contact systems are strongly affected on RTA, which causes degradation of the layer structure and destroys it.
It is seen from Fig.2 (obtained before the Au deposition) that the atom depth profiles were not significantly affected by RTA.
It should be noted that surface in the annealed samples became even more uniform which could be explained by relaxation of mechanical stress in the film after RTA.
RTA did not cause changes in Schottky barrier's parameters: the barrier height (0.8 eV) and ideality factor (1.1) measured before and after RTA were nearly the same.
Online since: February 2022
Authors: Ivetta A. Varyan, Nataliya Kolesnikova, Yulia Tertyshnaya, Maria Podzorova
Materials based on biodegradable polymers are exposed to external factors such as temperature, humidity, UV radiation, as well as microorganisms [4, 5].
It was found that the rate of decrease in the mass of the material depends on various biological, chemical and mechanical environmental factors.
At the same time, the availability of rubber is low for microorganisms and other environmental factors.
Popov, Effect of natural rubber in polyethylene composites on morphology, mechanical properties and biodegradability, Polymers. 12 (2) (2020) 437
Popov, Impact of UV treatment on polylactide-polyethylene film properties, IOP Conf.
Online since: February 2019
Authors: Mauro Cesar Terence, M.F.S. Gonçalves, N.C. Pereira
The Waste Polymer and Oyster Shell All plastics can be recycled, however the extent to which they are recycled depends upon both economic and logistic factors.
Various physical, mechanical and chemical properties of shells, such as cockle or blood clam, oyster, periwinkle shells, mussels, scallops, crepidula shells, and conk shells as a sand replacement, a partial and total course aggregate replacement, filler, and cement replacement, in form of complete, crushed, ground or powder had been studied [14].
Besides that, these residues have properties that allow their reuse.
However, the companies can also benefit indirectly by being involved in reverse logistics even there is no clear or immediate expected profit because of marketing, competition and strategic factors [23].
The calcium carbonate as OSW padding can reduce the cost of raw material, reduce production energy consumption, and improve preparation and mechanical properties effectively [27].
Showing 19361 to 19370 of 25965 items