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Online since: July 2011
Authors: Qing Yang, Wen Han Liu, Xin Ning
A good construction site layout can reduce the frequent transportation of material and equipment in construction site and personnel flows between facilities, thus to decrease the likelihood of accident happened and improve the safety level of construction management.
Table 1 Assumed facilities considered in the case study Facility Index Site Facilities 1 Site office 2 Debris storage area 3 Reinforcement bending/storage yard 4 Carpentry workshop and store 5 Labor hut 6 Materials storage area 7 Main gate (fixed) 8 Materials hoist (fixed) 9 Refuse chute (fixed) Table 2 The closeness relationship values for SE Facility No.
Moreover, the frequent material transportation between material storage area and material hoist would not influence the personnel in the site office.
The material hoist was put aside in the school building, the high falling dangerous will be reduced.
Eldosouky, Dynamic layout of construction temporary facilities considering safety, Journal of Construction Engineering and Management. 130 (2004) 534-541
Online since: September 2011
Authors: Gang Yi Cai, Hai Hong Wu, Shi Xing Zhang
Introduction 6061 aluminum alloy belongs to deformation aluminum alloy and becomes one of the most developing potentially material due to their low density, moderate strength, good hot-workability and good corrossion resiatance, which is widely applied in aeronautic, automobile, electronics and communications industries as one of structural materials [1,2].
While subsequent thermal treatment can furtherly enhance mechanical properties to satisfy the needs of structural materials. 6061 alloys is one of deformation aluminum alloys, which contains magnesium and silicon as major addition elements and can be strengthened through heat treatment [3-5].
Material and experimental The experimental samples were taken from extruded 6061 aluminum alloy bar.
Acknowledgements This work was supported by Natural Science Foundation of China under Grant No. 51075120 and Henan University of Technology of China under Grant No. 2009XGG006.
References [1] Grażyna Mròwka-Nowotnik, Jan Sieniawski: Journal of Materials Processing Technology Vol.162-163(2005), p. 367-372 [2] Ding Huilin, Xin Zhihua: Malfunction Aanlysis of Aluminum, copper and its alloy after heat treatment, Machinery Industry Publishing China (2007) in Chinese [3] Wang Jianhua, Yi Danqing, Cheng Kanghua: Hot Working Technology,2001, 16: 13-14 [4] Wang Kuangfei, Bai Yuqin: Mechanical Engineering Materials,1999, 2: 23-27 [5] J.K.Kim,H.G.Jeong,S.I.Hong,Y.S.Kim,and W.J.Kim:Scripta Materialia 45(2001)901-907
Online since: November 2012
Authors: Hai Yan Zang, Guang Di Wang
Expanding Sidoroff damage model to 3D stress state, it was supposed that the damage of rock materials is a function of equivalent strain.[5-6]
Hence,the mechanical parameters of rock materials can be deteriorated by damage function related with equivalent strain[7,8].
Rock materials According to damage deterioration model of rigid rock mass and mechanical test results of rock materials, the parameters of rock materials in computation region were determined.
Advance in earth sciences(2004). ( In Chinese) [9] Ping Xu, Feng Zhang,Shuda Zhou.
Chinese journal of rock mechanics and engineering(2000). ( In Chinese)
Online since: August 2016
Authors: Bernd-Arno Behrens, Christian Bonk, Anas Bouguecha, Milan Vucetic
In the future, the strain rate sensitivity of the inelastic heat fraction for both materials should be probed, therefore high speed tensile tests or Hopkinson bar tests could be used.
The Stored Energy of Cold Work, Progress in Materials Science, Vol. 17, p.5-177, 1973 [5] Macdougall, D., Determination of the Plastic Work Converted to Heat Using Radiometry.
On the strain and strain rate dependence of the fraction of plastic work converted to heat: an experimental study using high speed infrared detectors and the Kolsky bar, Mechanics of Materials, Vol. 17, p. 135-145, 1994 [7] Zehnder, A.
European Journal of Mechanics A/Solids 38, p.1-11, 2013 [9] Rosakis, P., Rosakis, A.
Journal of the Mechanics and Ohysics of Solids. 48, p.581-607, 2000 [10]Gesellschaft, VDI: VDI-Wärmeatlas. 10.
Online since: September 2013
Authors: Ai Min Tang, Shan Zhao, Chao Feng Jia
Materials and Methods Materials The PPTA hot-pressing paper was prepared with PPTA short-cut fibers and PPTA-pulp, hot pressed in laboratory.
Properties of new printed circuit board base materials [J].
Nordic Pulp and Paper Research Journal, 2010,25(4): 551-557
Insulating Materials, 2006, 39 (03): 18-22
Journal of Applied Polymer Science, 2004, 91(1): 417-424.
Online since: April 2011
Authors: Teobaldo Mariño Otero, Yodalgis Mosqueda Laffita, Carlos Ricardo Milian Pila, Eduardo Pérez Cappe
In this area is relevant the synthesis of new and better materials with appropriate performance as cathodes, anodes and electrolytes.
In literature the synthesis of these materials is reported by different routs as the ceramic [12,13], the sol-gel [14,15] and Pechini [16].
Kumarl, Materials for next-generation lithium batteries, Current Science. 94 (2008) 314-334
The Journal of Physical Chemistry. 109, (2005) 4135-4143
Tirado, Lithium-Cobalt Citrate Precursors in the Preparation of Intercalation Electrode Materials, J.
Online since: September 2018
Authors: Andrei Mikhailovich Maslov, Nikolay I. Plusnin
Annual Review of Materials Science, 14 (1984) 67-93
Modern Electronic Materials, 3 (2017) 131-141
Reviews on Advanced Materials Science (Russia), 3 (2002) 1-36
Solar Energy Materials and Solar Cells, 92 (2008) 1305-1310
Modern Electronic Materials, 3 (2017) 57-65
Online since: June 2015
Authors: R. Szatanik, Halyna Klym, O. Shpotyuk, A. Ingram, E. Petracovschi, L. Calvez, C. Lin
., 45370, Opole, Poland 3Institute of Materials of SRC “Carat”, 202 Stryjska str., 79031, Lviv, Ukraine 4Jan Dlugosz University, 13/15 Al.
Gong, Thermal and optical properties of GeS2-based chalcogenide glasses, Materials Science and Engineering B, 110 (2004) 38–41
International Conference on Oxide Materials for Electronic Engineering – fabrication, properties and applications (OMEE-2014), Lviv, Ukraine, May 26-30 (2014) 176-177
Shpotyuk, Multilayer thick-film structures based on spinel ceramics, Canadian Journal of Physics, 92 (2014) 822–826
Klym, Studies of CdI2–Bi3 microstructures with optical methods, atomic force microscopy and positron annihilation spectroscopy, Materials Science-Poland, 32 (3) (2014) 391-395
Online since: May 2014
Authors: Zoltán Gácsi, Adam Radanyi, Anna Sycheva
Studying Pressure Induced Whiskers Formation from Sn-rich Surfaces Anna SYCHEVA1, a, Adam RADANYI2,b and Zoltan GACSI2,c 1 MTA-ME Materials Science Research Group, Hungarian Academy of Sciences, Miskolc, Hungary 2Institute of Physical Metallurgy, Metal Forming and Nanotechnology, University of Miskolc, Miskolc, Hungary aa.sycheva@uni-miskolc.hu, bdzsorden@gmail.com, cfemtangz@uni-miskolc.hu Keywords: Lead free, tin plating, tin whisker, mechanical stress, SEM, oxidation.
Selvaduray, Lead-free Solders in Microelectronics, Materials Science and Engineering 27 (2000) 95-141
Surface Science 88 (2013) 103-131
Yanada, Microstructure Development of Mechanical-Deformation-Induced Sn Whiskers, Journal of Electronic Materials 36 (2007) 1732-1734
Chuang, Temperature Effects on the Whiskers in Rare-Earth Doped Sn-3Ag-0.5Cu-0.5Ce Solder Joints, Metallurgical and Materials Transactions A, 38A (2007) 1048-1055.
Online since: May 2012
Authors: Hong Shui Tian, Bang Hua Zhang
At present, submarine seismic records are discovered in the Shiwangzhuang Formation of the Sinian, in the Liguan Fm of the Lower Cambrian and in the Majiagou Fm of the Middle Ordovician [5-8].According to the seismic investigation materials of the west in Shandong Province, the authors studied the categories of the ancient submarine seismic records in the middle part of the Tancheng-Lujiang seismic fault zone and it’s vicinity of the Sinian, the Cambrian and Ordovician.
To make the past serve the present, this provides intuitive detailed materials for understanding the earthquakes’ destructive effect to the submarine rock and soil layers.
References [1] Xiufu QIAO, Andi ZHANG: Geology in China Vol. 29(2002), p.337-345(in Chinese) [2] Zhili LUO, Jingming LI, Xiaojun LI, et al.: Journal o f Jilin University (Earth Science Edition) Vol. 35(2005), p. 699-706(in Chinese) [3] Hongtai HUANG, Jialing LI, Zhaowen CUI, et al.: Marine Geology & Quaternary Geology Vol. 15(1995), p. 69-80(in Chinese) [4] Mingchun SONG, Peicheng WANG: Regional Geology of Shandong Province.
[5] Hongshui TIAN, Zhongjie WAN, Hualin WANG: Geological Review Vol. 49(2003), p. 123-131(in Chinese) [6] Hongshui TIAN, Zengqi ZHANG, Banghua ZHANG, et al.: Geology in China Vol. 33(2006), p. 1137-1143(in Chinese) [7] Hongshui TIAN, Hongkui LI, Zengqi ZHANG, et al.: Acta Geoscientica Sinica Vol. 28(2007), p. 496-506(in Chinese) [8] Hongshui TIAN, Banghua ZHANG, Jiewang ZHU, et al.: Journal of Palaeogeography Vol. 13(2011), p. 645-656(in Chinese) [9] Hongshui TIAN, Jing YUAN, Shenhe ZHANG, et al.: Acta Sedimentologica Sinica Vol. 24(2006), p. 496-501(in Chinese) [10] Hongshui TIAN, Zengqi ZHANG: Chinese Journal of Geotechnical Engineering Vol. 27(2005), p. 1453-1457(in Chinese) [11]Pratt B R: Sedimentary Geology Vol. 117(1998), p.1-10 [12] Xiufu QIAO, Haibing LI: Journal of Palaeogeography Vol. 11(2009), p. 593-610 (in Chinese) [13] Xiaonan GONG: Advanced Soil Mechanics.
(in Chinese ) [14] Minghua Zhao, Xiao Yu: Soil Mechanics and Foundation Engineering. ( Wuhan University of Science and Technology Press, China 2009).