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Online since: June 2013
Authors: Dong Ryun Shin, Seok Ho Rhi, Kyung Il Cha
Lee, Heat Transfer Characteristics on Toroidal Convection Loop with Nanofluids, KSME Journal B, Vol. 33 (2009), pp. 235-241 [8] C.Y.
Chen, Effect of structural character of gold nanoparticles in nanofluid on heat pipe thermal performance, Material Letters, Vol. 58 (2004), pp. 1461–1465 [9] H.B.
Luh, Effect of structural character of gold nano-particles in nanofluid on heat pipe thermal performance, Materials Letters, Vol. 58 (2004), pp. 1461–1465 [11] S.W.
Tirumala, An experimental investigation of heat transport capability in a nanofluid oscillating heat pipe, Journal of Heat Transfer, Vol. 128 (2006), pp. 1213–1216 [14] S.U.S.
Jang, Comparative study on heat transfer characteristics of nanofluidic thermosyphon and grooved heat pipe, Journal of Mechanical Science and Technology, Vol. 25 (6) (2011), pp. 1391–1398
Online since: May 2011
Authors: Ming Cong, Dong Liu, Qiang Zhao, Tao Han
Next, the material interpolation model should be chosen [6].
International Journal of Numerical Methods in Engineering Vol.15 (1980), p.1517-1539
Journal of Mechanisms, Transmissions, and Automation in design Vol. 106(1984), p.199-202
[6] Bendsoe MP and Sigmund O: Material interpolation schemes in topology optimization.
Information Technology Journal Vol. 8(2009), p.708-716.
Online since: November 2013
Authors: Bruno Buchmayr, Thomas Hatzenbichler, Isaac Flitta
Results are presented for velocity distribution and temperature evolution in both materials and tools.
Moreover, the accuracy of the results does not only depended on the geometric definition of the tooling and material data but also the governing boundary conditions between the material and tooling.
In order to enable full advantage to be taken of the use of fe programs available to simulate manufacturing processes, not only are detailed mechanical and microstructure constitutive descriptions of materials required but thermal properties of workpiece/tool interfaces and the tools must be available and assigned properly into the these fem codes.
Flitta, Sheppard T and Peng Z, FEM analysis to predict development of structure during extrusion and subsequent solution soak cycle, Journal Materials Science and Technology, 23(5), May 2007 , pp. 582- 592(11) 2007 [2] Scientific Forming Technologies Corp.
Materials Science and Technology.
Online since: April 2012
Authors: Poh Sum Wong, Tien Yew Eeu, Rosli Hussin, Wan Ming Hua, Zuhairi Ibrahim
Besides being of interest from the point of view of fundamental science, borophosphates have also attracted attention for a variety of technological applications in catalysis and ceramic engineering [4, 5], as well as for fast ion-conducting materials [6-8].
Furthermore, alkaline-earth borophosphates are interesting solid-state materials which have an isoelectronic relationship with silicates.
These materials are biocompatible with the living body, so they are called bioceramics.
The infrared studies of these materials have not been reported before.
Besides that, it also provides good information at exploring new functional materials, especially for the nonlinear optical materials.
Online since: March 2011
Authors: Kwiryn Wojsyk, Piotr Lacki, Konrad Adamus, Marcin Zawadzki
Electrons have the capability of penetrating through external material layers at depth of about 10-2 mm.
Under high pressure the bubble of metal vapor bursts and external material layer is destroyed.
There are following advantages of using EBW technology [7]: · no pre-heating is required for materials that have high melting point, · capability of welding materials that have high thermal conductivity, · since welding is performed in vacuum it is possible to weld materials that react with atmospheric gases, for instance titanium, · capability of welding materials that tend to reflect laser beam, · ease of controlling welding parameters that allows for welding of small and large objects.
Thermal elasto-plastic material model was assumed in the numerical model.
[2] Huang C.A., Wang T.H, Lee C.H., Han W.C., A study of heat-affected zone (HAZ) of an Inconel 718 sheet welded with electron-beam welding (EBW), Materials Science and Engineering A, 398 (2005) 275-281 [3] Egbewande A.T., Buckson R.A., Ojo O.A., Analysis of laser beam weldability of Inconel 738 superalloy, Materials characterization, 61 (2010) 569-574 [4] Ferro P., Zambon A., Bonollo F., Investigation of electron beam welding in wrought Inconel 706 - experimental and numerical analysis, Materials Science and Engineering A, 392 (2005) 94-105 [5] Nikolaev G., Olshansky N., Advanced welding processes, Mir, Moscow, 1977 [6] Schultz H., Electron beam welding, Woodhead Publishing, Abington, 1994
Online since: August 2014
Authors: Alexander Wanner, Jens Gibmeier, Johannes Kümmel, Volker Schulze
Effect of built-up edge formation on residual stresses induced by dry cutting of normalized steel Johannes Kümmel1,a *, Jens Gibmeier1,b, Volker Schulze1,2,c, Alexander Wanner1,d 1Karlsruhe Institute of Technology (KIT), Institute for Applied Materials (IAM), Kaiserstraße 12, D-76131 Karlsruhe, Germany 2Karlsruhe Institute of Technology (KIT), Institute for Production Science (wbk), Kaiserstraße 12, D-76131 Karlsruhe, Germany ajohannes.kuemmel@kit.edu, bjens.gibmeier@kit.edu, cvolker.schulze@kit.edu, dalexander.wanner@kit.edu Keywords: machining, dry cutting, built-up edge, surface layer, cutting tool wear Abstract.
This choice of cutting tool material promotes built-up edge formation due to adhesion tendency to the chosen workpiece material.
Surface integrity in material removal processes: Recent advances.
Journal of Engineering for Industry, 104:257-264, 1982
Journal of Materials Shaping Technology, 8:255-265, 1990
Online since: January 2016
Authors: Martin Krejsa, Petr Janas, Vlastimil Krejsa
In probabilistic tasks are input random variables often statistically dependent - for example crosssection properties, strength and stiffness characteristics of the materials.
Krejsa, Measured data processing in civil structure using the DOProC method, Advanced Materials Research. 859, Trans Tech Publications, Switzerland (2014) 114-121, DOI: 10.4028/www.scientific.net/AMR.859.114
Cajka, Using DOProC Method in Structural Reliability Assessment, Applied Mechanics and Materials. 300-301, Trans Tech Publications, Switzerland (2013) 860- 869, DOI: 10.4028/www.scientific.net/AMM.300-301.860
Krejsa, Probabilistic failure analysis of steel structures exposed to fatigue, Key Engineering Materials. 577-578, Trans Tech Publications, Switzerland (2013) 101-104, DOI: 10.4028/www.scientific.net/KEM.577-578.101
Krejsa, ProbCalc - An efficient tool for probabilistic calculations, Advanced Materials Research. 969, Trans Tech Publications, Switzerland (2014) 302-307, DOI: 10.4028/www.scientific.net/AMR.969.302
Online since: February 2018
Authors: Feng Jiang, Xin Cheng, Qing Feng Liu, Ning Chang Wang
Introduction With the development of modern industry, more and more engineering materials with high wear resistance, heat resistance and hardness are developed.
From high-speed steel, cemented carbide, carbide cutting tools with coating to multivariate composite coating cutting tool, the development of cutting tool materials technology is very rapid.
The material of the indenter is diamond.
Fig. 1 The experimental setup and the instrument arrangement The Materials of Cutting Tool Substrate and Coating.
The material of substrate is YG-10 (K).
Online since: September 2013
Authors: Ye Zhang, Ji Xiu Zhang, Peng Xuan Duan
Study on Preparation of high strength gypsum by Flue Gas Desulfurization Gypsum Ji Xiu Zhang, Pengxuan Duan, Ye Zhang National Key Laboratory of Solid Waste Resource Utilization and Energy-saving Building Materials Beijing Building Materials Academy of Sciences Research, Beijing, 100041, China Zhang_jixiu@163.com Key words: comparative study; super high strength gypsum; flue gas desulfurization gypsum; natural gypsum Abstract: In this paper, the flue gas desulfurization gypsum (FGD) generated from thermal power plant is used to produce high strength gypsum.
Gypsum building material [M].Beijing: China Architecture & Building Press.2003. ].
In recent years, in order to alleviate pressure on gypsum resources, industrial by-product gypsums instead of natural gypsum are used in building materials industry.
Materials and Methods Experimental materials In this study, α high-strength gypsum powder is the product of the Beijing Building Materials.
Journal of the Chinese Ceramic Society,2002,30(4):532-536. ].In addition, most of the particles appear short columnar and small aspect ratio.
Online since: July 2017
Authors: Dmitry V. Lychagin, Vladimir V. Skripnyak, Evgeny N. Moskvichev, Vladimir A. Krasnoveikin
Introduction One of the most essential and promising branches in the materials science is the creation and development of the methods of metal processing technologies.
These materials are of a great interest due to their improved mechanical properties.
This method of improving flat rolling stock strength properties has already proven its efficiency for different materials, such as commercially pure aluminum, copper, low-carbon steel, and nickel.
Materials and experimental procedure The 1560 aluminum alloy in as-received condition, widely used in aerospace industry, is selected as an object of analysis.
Markushev, High strain rate superplasticity of a 1570C aluminum alloy with bimodal structure obtained by equal-channel angular pressing and rolling, Letters on materials. 5(2) (2015) 129-132.