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Online since: May 2011
Authors: Feng Yi Tan, Rong Hua Zou, Han Bing Hu, Zu Kai Lin
The extra compaction region, out of the outer border of compaction layer, was cut by excavator, in which the planeness was within -5.0cm, and the cut part was as the backfilling materials, showed in fig.2.
Property of excavated swelling rock as backfilling material The property of excavated swelling rock, such as water content, free expansion ratio, should be tested before it was used as the backfilling materials, which was satisfied with the requirements of backfilling materials, particularly its water content, if it was lower the requirement, it was sprayed and agitated until it was satisfied with requirement and it was covered by the shower proofing.
Journal of Lanzhou Railway University (Natural Science), 2003, 22(4): 88-90
South-to North Water Transfer and Water Science & Technology,2009,7(6):178-181
Online since: September 2014
Authors: Ying Sen Li
Research of the Simulation Experiment Platform for Grinding Process Control Yingsenli School of Electronic and Information Engineering, University of Science and Technology Liaoning, Anshan 114051, China wert234wert234@163.com Keywords: Grinding process; Simulation system; Process control Abstract.
In the mill in pulp balance equation for the variation of the solid material
(8) As a result of the mill in the case of grade I rate for the graded material (including sand return back part) and the difference between the rows of ore, added into other graded broken to the ith graded materials and the grade I reduce material by crushing, grinding can be obtained for dynamics equation
[5] JinliangDing: Chinese Journal of Scientific Instrument.
[6] Rajamani K, Herbst J: Chemical Engineering Science.Vol. 46(1991): p. 870
Online since: September 2016
Authors: Valeriy Morozov, Tatiana Evdokimova, Eres Opbul, Aleksey Khegai
Introduction Construction of unique high-rise buildings, in design of which a wide variety of effective materials and design solutions is accepted, is of great importance in building industry at the present time.
Specifications of materials obtained during the tensile-and-compression test of concrete and fiber concrete prisms and re-bars: - Rbn = 37.5 MPa; Rb = 28.8 MPa; Rfbn = 39.2 MPa; Rfb = 30.2 MPa; Rfbtn = 2.75 MPa; Rfbt = 1.83 MPa; εfbt1 = 80´10-5; Rsn = 505 MPa; Rs = 440 MPa.
Abstract of a PhD thesis in Technical Sciences, Saint Petersburg, 2006
Mikheev, Issledovanie vlijanija svojstv stal'nyh fibr na jekspluatacionnye harakteristiki stalefibrobetonnyh konstrukcij, “Polzunovsky Vestnik” Journal. 1 (2011) 196–199
Evdokimova, Eksperimental'nye issledovanija osobennostej povedenija fibrobetona pri rastjazhenii, Book of reports of the IC Academic Readings of the Russian Academy of Architecture and Construction Sciences — International Conference “Durability, strength and fracture mechanics of concrete, reinforced concrete and other building materials”, Saint Petersburg, SPbSUACE, 2016, pp. 100–103
Online since: February 2011
Authors: Qi Quan Lin, Hui Xiao, Zhi Gang Wang, Wen Zheng Dong
The workpiece material was set as a rigid-plastic type with aluminum A1050 (JIS).
Obviously, an inverted cone-shape dimple can be observed from the macro-scale map, and the material around the bulging shows intense plastic flow referring to the micro-scale map below.
Acknowledgements The authors would like to express their gratitude to the financial support provided by the international cooperation project of the Ministry of Science and Technology, China (No:2010DFA52130).
[4] Masato OKADA and Takayuki MUTRANKA: Research reports of Fukui National College of Technology, Natural science and engineering Vol. 38 (2004).
Gorji: Journal of Materials Processing Technology.
Online since: March 2015
Authors: Fan Wu, Yang Song
AE is a naturally occurring phenomenon within materials and is the resulting transient elastic wave generated when strain energy is released suddenly [5].
Piezoelectric material is often used in AE sensors.
NSFC-61227071, and from Shenzhen Science and Technology Dept. under grant No.
Mo: Concrete structural health monitoring using embedded piezoceramic transducers, Smart Materials and Structures,Vol.16(2007), p. 959 [7] K.
Anastasopoulos: Acoustic emission monitoring of wheel sets on moving trains, Construction and Building Materials, Vol.48(2013), p.1266-1272
Online since: October 2014
Authors: Iulian Cucos, Corneliu Munteanu, Petru Avram
Material characteristics, mechanical and technological characteristics determined by program to predict the structure and mechanical properties are shown in the Table 1.
Material characteristics, mechanical and technological characteristics Characteristics of material (at t = 20 0C) density r0=7753,6 [Kg/m3] Mechanical characteristics hardness = 22 [HRC] specific heat C0=475,42[ Wh/Kg 0C] internal stress = 920 [Mpa] thermal conductivity l0=44,51 [W/m 0C] elongation = 14 [%] reduction of section = 60 [%] charpy value = 60 [J] Technological characteristics critical temperatures the formula ASM [4] the formula Monge [4] formulas from the program Ac1 [0 C] 710,20 725,90 713,20 Ac3 [0 C] 787,26 775,72 787,24 Ms [0 C] - - 331,72 Normalizing heat treatment heating temperature [0 C] 861 heating time [second] 3660 maintaining the temperature during the normalizing [second] 1380 cooling conditions of the piece cooling on air The tuning PID algorithm together with the supervision system was implemented on a PC with system of acquisition of data from conducted system.
Tauqir, Understanding the phenomena of intelligent heat-treatment Quarterly Science Vision 8:1 (2002) 87-93
Jagiello, Computer programme for prediction steel parameters after heat treatment, Journal of Achievements in Materials and Manufacturing Engineering JAMME 24:2 (2007) 171-173
Trzaska, Calculation of the steel hardness after continuous cooling, Archives of Materials Science and Engineering 61:2, (2013) 87-92
Online since: March 2015
Authors: Song Tao Hu, Khan Qasim, Ba Long, Xiao Xiang Zhang
The TPUs have intrinsic advantages over PDMS as the matrix material of elastomer stress/strain sensor on several issues[5].
Our tests demonstrated that the high sensitivity of the resistance change under compressive deformation relies on the perfectness of conducting layer during deformation and the high repeatable resistance change versus load promise application possibilities based on this less complicate and low cost design, which enables precise stress-strain measurement of soft materials and load distribution mapping with size of sensing elements less than hundreds micrometers for wide range applications from engineering sensors of soft materials to consumer electronics of tactile sensor arrays.
First, the CVD graphene on copper foil (obtained from Xiamen G-CVD Material Technology Co.
Wang, Thin Flexible Pressure Sensor Array Based on Carbon Black/Silicone Rubber Nanocomposite, Ieee Sensors Journal, 9 (2009) 1130-1135
Meyer, Load and health monitoring in glass fibre reinforced composites with an electrically conductive nanocomposite epoxy matrix, Composites Science and Technology, 68 (2008) 1886-1894
Online since: June 2012
Authors: Zhan Li Wang, Yang Jiao, Jing Li, Ze Bin Zheng, Chun Ping Shao
Test bench for automobile clutch cover Assembly pusher are made of 45 steel, material properties is shown in table 1.
Table 1 Main performance parameters of 45 steel materials material name # 45 density(kg/m³) 7.85g/cm3 Young's modulus(GPa) 206GPa Poisson ratioγ 0.3 yield strengthσ(MPa) 355MPa Grid Partitioning.
Acknowledgements The financial support of the Jilin Provincial Science &Technology Department projects (20090344).
Science Technology and Engineering. 2011,9(11)2078- 2081.
[3] Chen Ming, Zhou Sizhu, Gao Yunquan, Qi Xuan, Zhang Junhuan..The Journal of Hubei University of Technology 2009,02(24),71-73.
Online since: August 2012
Authors: Gang Li, Zhao Yin Jiang, Chun Ling Xin, Ya Dong He
In this study, the mean residence time of all five screw assemblies is calculated by T=m/Q, where T is the mean residence time; m is the mass of the material gathered after stop feeding materials on steady state; Q is the output in one minute on the steady state.
NO.5# screw owns the longest residual fiber length, but the mixed-ability is too weak to mix the materials and disperse fibers uniformly.
If the shear is excessive strong, the fibers will be cut short easily, so that the composite will not reach the strength enhancing requirement; if the shear is excessive weak, the screw’s mixing ability will be too weak to mix the materials uniformly; also it militates against the fiber dispersion.
References [1] Geng Xiaozheng: Twin screw extruders & its application, edited by China Light Industry Press (2003) [2] Duan Zhaohua, Zhou Le, Chen Xian and He Bobing: Study on the mechanical properties of the long glass fiber reinforced PA66, edited by China Plastics Industry, Vol. 37(4), (2009), p.32-34 [3] Tao Wei, Du Fazhao, Li Haixia, Huang Yi, Wang Kefeng, Wang Chengwang, Yi Junxia and Li Ruihai: Effect of co-rotation twin-screw extruder screw assembly on mechanical performance of glass fiber-reinforced AS, edited by China Plastics Industry, Vol. 37(4), (2009), p.49-52 [4] Keungjin Shon and James L.White: A comparative study of fiber breakage in compounding glass fiber-reinforced thermoplastics in a buss kneader, Modular co-rotating and counter-rotating twin screw extruders, edited by Polymer Engineering and Science, Vol. 39(9), (1999), p.1757-1768 [5] Andrea Terenzi, Jose´ M.
Analysis of Fiber Damage during Processing, edited by Journal of Applied Polymer Science, Vol. 103, (2007), p.2501-2506
Online since: October 2011
Authors: Marcelo Henrique Prado da Silva, Euler A. dos Santos, Andrea Machado Costa, Elena Mavropoulos, Alexandre Mello, Renata R. de Oliveira, Alexandre Rossi
Rossi1 1Brazilian Center for Physics Research, CBPF, RJ, Brazil 2Military Institute of Engineering, IME, RJ, Brazil 3Center for Science and Engineering of Materials, UFS, Aracaju, SE, Brazil 4Centre for Structural Molecular Biology, LNLS, SP, Brazil andrea_machadocosta@yahoo.com.br, elena@cbpf.br, mello@cbpf.br, araujo.euler@gmail.com, renata.oliveira@lnbio.org.br, marceloprado@ime.eb.br, rossi@cbpf.br Keywords: myoglobin, hydroxyapatite, spectroscopy Abstract.
Introduction The protein adsorption is a process that occurred through many events, such as conformational changes of protein molecules and co-adsorption of ions on the material surface.
They suggest this technique to identify the protein denaturation after an adsorption process on a material surface.
Materials and Methods Hydroxyapatite Preparation and Characterization.
Carpenter, Infrared Spectroscopic Studies of Lyophilization- and Temperature-Induced Protein Aggregation, Journal of Pharmaceutical Sciences, 84: 4 (1995) 415- 424