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Online since: October 2012
Authors: Qiao Lan Jin, Ping Li, Hui Liu
Materials The materials used in this investigation were Portland cement, slag, fine aggregate, coarse aggregate and superlasticizer.
The constituent materials used in the program were tested to comply with the relevant Chinese Standards.
Materials and Structures, 2008, (41) : 479-493
ACI Mater Journals 1990;87(3):210–20
J Materials Science, 2004, 39:2191–2193
Online since: April 2013
Authors: Olivier Dalverny, Joel Alexis, Thibaut Fourcade, Adrien Broue, Jeremie Dhenni, Jean Michel Desmarres, Cedric Seguineau, Talal Masri
Previous studies have been carried out on bulk and composite materials [3, 4].
Two load cells are available (1.5 N and 20 N) to test different kinds of materials.
The explanation of such results lays in the phenomena that lead the damage of the specimen materials.
An, Metallurgical and Materials Transactions A, 13A (1982), pp. 457-472 [4] A.
Sharpe, "Material Characterization of Mechanical Properties", Annual Review of Materials Science", 37, 2007, pp; 93-126
Online since: August 2012
Authors: Tomasz Giesko
Introduction Fatigue processes taking place in materials and structural elements are one of the most important issues in the area of knowledge on the maintenance of technical objects.
The monitoring of fatigue is facilitated by the application of experimental methods with the use of optoelectronic technologies that are applied both in fatigue diagnostics of materials and structures as well as local deformation analyses.
The optomechatronic systems for the monitoring of fatigue fracture in materials and structural elements developed jointly by the Institute for Sustainable Technologies – National Research Institute (ITeE-PIB) in Radom and the University of Technology and Life Sciences in Bydgoszcz [2,8] constitute good examples of such solutions.
The article presents a dual-camera vision system for the monitoring of fatigue wear in materials and structural elements developed at the Institute for Sustainable Technologies – National Research Institute in Radom.
[7] Yan J.H., Sutton M.A., Deng X., Wei Z., Mixed-mode crack growth in ductile thin-sheet materials under combined in-plane and out-of-plane loading, International Journal of Fracture, vol. 14 no 4 (2009) 297-321
Online since: April 2004
Authors: Laimutis Telksnys
Designer define initial conditions for generating of artificial planar systems: � planar systems geometry; � number of planar systems elements; � materials, substances used to make systems.
Example of colour codes for all these materials is presented in Fig. 2.
For example, in situation when we have planar systems with n elements and use m materials N = m n patterns is available.
Colour codes for m = 4 materials.
[6] Stephen Wolfram: A New Kind of Science (Wolfram Media, Inc., 2002), p. 1197
Online since: May 2009
Authors: Ju Long Yuan, Ping Zhao, Zhi Wei Wang, X.H. He, K.F. Tang, Jia Jie Chen
Especially, with the rapid development of the semiconductor industry, there's an urgent demand of the abrasive tools that the semiconductor materials could be lapped more high-efficient and high-precision.
The SAP is formed through drying abrasive materials which are bonded with the organic polymer materials.
Yuan, D.Q Yu: Advanced Materials Research,Vol.53(2008), pp. 161-166
Wang: Chinese Journal of mechanical engineering, Vol.43(2007), pp.35-48
Yang: Advanced Materials Research,Vol.53(2008), pp.173-178
Online since: July 2017
Authors: Mario Ueda, Bruno Bacci Fernandes, Alfeu Saraiva Ramos, Luiz Otávio Vicentin Maruya
Materials and methods High-purity raw materials were used to prepare the Ti-2Mg-22Si-11B and Ti-7Mg-22Si-11B (at.-%) powder mixtures weighing close to 23g, which were handled under Ar atmosphere into the glove box.
Rodrigues: Materials Research Vol. 17 (2013), p. 1
Ramos: Materials Science Forum.Vol. 727 (2012), p. 216
Ramos: Materials Science Forum Vol. 802 (2014), p. 9
Kraus, G.Nolze: Journal of Applied Crystallography Vol. 29 (1996), p. 301.
Online since: February 2012
Authors: Lian Tie Wang, Qing Shan Meng, Da Wei Xia, Xin Ming Wang
Introduction The more progress of the society and the development of science and technology, the more widely of electricity used, and then also produced many unsafe factors.
Causes the current increases rapidly in a short time with much heat and soaring temperature, when the temperature higher than the insulation materials fire point, it can burn in case of oxygen.
Material Evidence Extraction Extract Method.
Journal of Chinese People's Armed Police Force Academy,2009(6): 64-66.
[6] Quankun Liu:Material Molding Basic Principle(Mechanical Industry Press,Beijing 2005).
Online since: September 2011
Authors: Xia Zhao, Hui Hui Tan, He Zhang, Zhu Xing Tang
Preparation and Microstructure of Pressureless Sintered Si2ON2-SiC Ceramic Huihui Tan 1, a, Zhuxing Tang 1, b*, Xia Zhao 1, c, and He Zhang 1, d 1school of Material Science & Engineering, Shandong University of Technology, Zibo, Shandong, 255049, China atan497976788@163.com, btangzx@sdut.edu.cn, cxzhao126@126.com, dzhanghe1215@163.com * corresponding author: Zhuxing Tang, School of Material Science & Engineering, Shan Dong University of Technology, Zibo, Shandong, 255049, China, tangzx@sdut.edu.cn Keywords: Pressureless Sintering, Si2N2O-SiC Ceramic, Preparation, Microstructure Abstract: This paper introduces Si2ON2-SiC ceramic fabricated by pressureless sintering method and studies the effect of additives, nitriding temperatures on bulk density, porosity, phase composition and microstructure.
Fig. 3A is the profile of raw material after milling for 40 h.
Because amorphous SiO2 is used as raw material, no SiO2 peak can be seen in the figure.
A small amount of Si3N4 peak is appeared due to the nitrided Si in the raw material.
Ge: Journal of Inorganic Materials.
Online since: August 2017
Authors: Mihaela Lucia Ion, Rodica Mariana Ion, Raluca Maria Ştirbescu, Ioan Alin Bucurică, Ioana Daniela Dulamă, Sofia Teodorescu
Materials and Characterization Techniques The chalk samples have been taken from a limestone monument, as detachable samples without the architectural value, Figure 1.
Results and Discussion Degradation by crystallization of salts ("salt decay") occurs in porous materials, like natural stone, bricks and mortar.
Sulphates of Na, K, Mg and Ca are the most aggresive because it causes a pronounced weakening of the cohesion of materials.
Rajendran, Growth Characterization Of Calcium Oxalate Monohydrate Crystals Influenced By Costus Igneus Aqueous Stem Extract, International Journal of Pharmacy and Pharmaceutical Sciences. 4 (1) (2012), 261-270
Chinese Science Bulletin, 48(17) (2003), 1844-1852
Online since: June 2023
Authors: Tobias Erlbacher, Eric Guiot, Tom Becker, Jürgen Leib, Carsten Hellinger, Frédéric Allibert, Walter Schwarzenbach, Séverin Rouchier
Despite continuous improvement in 4H-SiC material quality and supply, the availability of high quality wafers, enabling very high yields, is still inadequate.
By limiting the ton (on-time of the load current) to a value of ton < 5s, the test exerts targeted stress on the chip – near interconnections (die-attach and top side) and any other structure within the chip itself – thus studying the potential impact of SmartSiC™ materials properties in a conventional module setup (see Fig. 3).
Rouchier et al., in Materials Science Forum 1662-9752, Vol. 1062, pp 131-135 [2] U.
Hellinger et al., Materials Science Forum, Vol. 1004, pp 718-724 [5] E.
Roccaforte et al., Chapter in International Journal of High Speed Electronics and Systems · June 2006.