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 2019
Authors: Vinay Kumar Soni, Shubhashis Sanyal, Sudip Kumar Sinha
Sinha2,c 1Department of Mechanical Engineering, National Institute of Technology, Raipur 492010, India 2Department of Metallurgical Engineering, National Institute of Technology, Raipur492010, India avnysny@gmail.com, b ssanyal.mech@nitrr.ac.in, csksinha.met@nitrr.ac.in Keywords: HEA, Solid solution, atomic size difference, electronegativity difference, TOPSIS.
Materials and Methods Most Suitable and readily available 13 elements like Al,Co,Cr,Cu,Fe,Ni,Mn,Mo,Si,V,Ti,Zn have been used in the present study.
Decision matrix for candidate materials and physiochemical and thermodynamic parameters of different equiatomic and non equiatomic HEA’s Objectives of design parameters - - - Max Min Min - - - Weight - - - 1 1 1 - - - Alloy system Tm (K) ∆Smix (J/K) ∆Hmix (kJ/mol) Ω δ% ∆X VEC Phase Reference Al Co0.5 Cr Fe Mo0.5 1814 12.96 -9.68 2.42 6.20 0.175 6.1 BCC+ σ [14] Al Co Cr Fe Mo0.5 1808 13.14 -10.27 2.31 6.03 0.168 6.4 BCC+ σ [14] Al Co1.5 Cr Fe Mo0.5 1804 12.94 -10.44 2.23 5.86 0.161 6.7 BCC+ σ [14] Al Co2 Cr Fe Mo0.5 1801 12.60 -10.38 2.18 5.69 0.156 6.9 FCC+ BCC+ σ [14] Al Co Fe Ni Mo0.5 1708 13.14 -12.74 1.76 6.07 0.156 7.3 BCC+ σ [15] Co Cr Fe Ni Mo0.3 1943 12.82 -4.15 6.00 2.36 0.127 8.0 FCC [16] Co Cr Fe Ni Mo0.5 1985 13.14 -4.34 6.00 2.90 0.140 8.0 FCC+ σ [16] Co Cr Fe Ni Mo0.85 2051 13.36 -4.57 5.99 3.48 0.156 7.8 FCC+ σ+µ [16] Co Cr Fe Ni Ti0.3 1876 12.82 -8.89 2.70 4.34 0.117 7.9 FCC [17] Co Cr Fe Ni Ti0.5 1879 13.14 -11.55 2.13 5.31 0.126 7.7 FCC+ σ + µ+R [17] Co Cr Cu Fe
BCC+FCC Co Cr Fe Ni Al0.875 0.978 0.163 0.143 22 BCC+FCC Co Cr Fe Ni Al1.25 0.983 0.149 0.131 26 BCC Co Cr Fe Ni Al1.5 0.985 0.142 0.126 28 BCC Co Cr Fe Ni Al2 0.988 0.135 0.120 29 BCC Co Cr Fe Ni Al2.5 0.989 0.132 0.118 30 BCC Co Cr Fe Ni Al3 0.990 0.131 0.117 31 BCC Mo Cr Fe Ni Cu 0.929 0.191 0.171 16 FCC Mn Cr Fe Ni Cu 0.944 0.208 0.181 11 BCC+FCC Mn2 Cr2 Fe2 Ni2 Cu 0.096 0.992 0.911 1 FCC Mn2 Cr Fe Ni2 Cu 0.797 0.262 0.247 2 FCC Mn Cr2 Fe2 Ni2 Cu2 0.950 0.232 0.196 6 BCC+FCC Mn Cr2 Fe2 Ni Cu 0.954 0.229 0.193 7 FCC Mn2 Cr2 Fe Ni2 Cu 0.941 0.225 0.193 8 BCC+FCC Mn2 Cr Fe2 Ni Cu 0.940 0.204 0.178 12 BCC+FCC Mn2 Cr2 Fe2 Ni Cu 0.961 0.199 0.172 15 BCC+FCC Fe Co Cr Ni Ti0.3 0.970 0.192 0.165 19 FCC+HCP Co Cr Fe Ni Mo0.3 0.952 0.239 0.201 5 FCC Al Cr Mo Si Ti 1.0165 0 0 38 Ordered BCC+ Mo5Si3 Conclusion The present study paves a path for researchers working in the field of high entropy alloy to tailor desired mechanical properties and structure as the formation of solid solution plays key
Online since: October 2006
Authors: Joachim Grillenberger, Bengt Gunnar Svensson, Andrej Yu. Kuznetsov, Martin S. Janson, Anders Hallén, Margareta K. Linnarsson, C. Jagadish, Giovanni Alfieri, J. Wong-Leung, H. K.-Nielsen, Edouard V. Monakhov, Ulrike Grossner
Grillenberger 4,l 1 University of Oslo, Physics Department and Centre for Materials Science & Nanotechnology, P.O.
Box 1048, Blindern, N-0316 Oslo, Norway 2 Royal Institute of Technology, Microelectronics and Information Technology, Electrum 229, SE-164 40 Kista-Stockholm, Sweden 3 Australian National University, Department of Electronic Materials Engineering, Canberra ACT 0200, Australia 4 Paul Scherrer Institute, 5232 Villingen PSI, Schwitzerland a b.g.svensson@fys.uio.no, bahallen@imit.kth.se, cjwl109@rsphy1.anu.edu.au, dmjanson@uci.edu, e marga@imit.kth.se, fandrej.kuznetsov@fys.uio.no, ggiovanni.alfieri@fys.uio.no, h ulrike.grossner@fys.uio.no, ie.v.monakhov@fys.uio.no, jhkn@phys.au.dk, kcxj109@rsphy1.anu.edu.au, ljoachim.grillenberger@psi.ch Keywords: implantation, profile simulation, doping, ion flux, dynamic annealing Abstract.
In this context some key areas have been identified, such as (i) gate dielectrics for field-effect devices with low leakage current, low density of interface states and high long-term reliability, (ii) low resistance Ohmic contacts stable at elevated temperatures, and (iii) selective area doping.
In general, it may be concluded that this empirical approach provides a fast (almost instantaneous execution), reliable, user-friendly and compact simulator, suitable for demanding dopant profile engineering in various types of SiC-devices.
Online since: November 2012
Authors: Xia Wang, Ying Li, Xiao Yan Li, Yao Zu Liao, Wei Qian, Deng Guang Yu
Performance Enhancements of Polysulfone Ultrafiltration Membranes through Blending with Functionalized Carbon Nanotubes and Polyaniline Nanofibers Yaozu Liao,1,a Xia Wang,1,b Ying Li,1,c Wei Qian,1,d Xiaoyan Li1,e and Deng-Guang Yu1,f 1School of Materials Science and Engineering, University of Shanghai for Science and Technology, 516 Jun-Gong Road, Shanghai 200093, China ayzliao@usst.edu.cn, bwangxia@usst.edu.cn, cliying@usst.edu.cn, dweiqian@usst.edu.cn, elixiaoyan@usst.edu.cn and fydg017@usst.edu.cn Keywords: Carbon nanotubes, polyaniline nanofibers, polysulfone, ultrafiltration membranes, composites.
Introduction Ultrafiltration (UF) membranes are of great interest in many engineering separations since they show unique capability, easy to scale-up possibility, low energy consumption and recoverability [1].
Experimental Materials.
Acknowledgements This work was financially supported by the Starting Fund from the University of Shanghai for Science and Technology (10-00-310-001) and the Key Project of Science and Technology of the Shanghai Commission (No. 10JC1411700).
Online since: December 2010
Authors: Xue Yi Fu, Zhen Yu Huang, Xian Chuan Chen
Wind-Induced Vibrating Comfort Analysis of Long Span Sightseeing Bridge of Shenzhen Wan Sports Center Xueyi Fu1,2,3,a , Zhenyu Huang1,b, and Xianchuan Chen3,c 1Department of Urban and Civil Engineering, Harbin Institute of Technology Shenzhen Graduate School, Shenzhen (518055),China 2China Construction Design International, Shenzhen (518048), China 3Department of Civil Engineering, Shenzhen University, Shenzhen (518060), China afu_xue_yi@yahoo.com.cn, btianhuan668@sina.com, ccxcszu@163.com Keywords: Long Span Structure; Wind Tunnel Test; Wind-Induced Vibration Comfort; Wind-Induced Time History Analysis Abstract.
Consider that structure comfort analysis focus on the stage of linear-elastic and the key procedures are as follows: (a) Elastic model was applied, which only consider linear-elastic materials and a small deformation.
Hence, classical elastic models were used for the linear material effects of both steel and concrete structures.
Journal of Shenzhen Construction Engineering.
Online since: October 2013
Authors: Yan Ran Chen, Li Chao Niu
This paper is based on the macroeconomic considerations of the present status of disaster prevention sign system for library public buildings, analyze the relevance of disasters and the disaster prevention signs, make an intensive study of the key problem on the design of disaster prevention signs cognitive system for library public buildings from zoning, level settings and systemic design.
Because the personnel gather fewer than the level-I, the quantity of signs can be reduced; however, the material and the sign type should be the same as the level I.
The disaster prevention signs with night vision function or adapting to the complex environment, which can be produced with fluorescent materials or set up with an internal separate power supply, can increase the probability to be found.
Saeki, Study on residents’ recognition of a flood hazard map and promotion measures of its recognition, Annual Journal of Hydraulic Engineering, Japan Society of Civil Engineers, 48 (2004) 433-438
Katada, The Characteristics of Inhabitants’ Cognition Involving Heavy-Rainfall Hazard in Small Mountainous River Basins, Annual Journal of Hydraulic Engineering, Japan Society of Civil Engineers, 45 (2001) 43-48.
Online since: August 2014
Authors: Guang Zhou Chen, Wen Jiang Huang, Xiao Dong Yang, Mu Yi Huang
Monitor Disease Incidence of Winter Wheat Stripe Rust Using Hyperspectral Data: Analysis of Characteristic Spectrum and Establishing of Inversion Models Muyi HUANG1,a, Wenjiang HUANG2, b, Xiaodong YANG2, c, Guangzhou CHEN1,d 1Department of Environmental Engineering, Anhui Jianzhu University, Hefei, 230601, China 2National Engineering Research Center for Information Technology in Agriculture, Beijing, 100089, China aemail: huangyang78@163.com, bemail:yellowstar0618@163.com cemail:yangxd7@163.com, demail:chgzh5@163.com Keywords: Disease Incidence; Winter Wheat Stripe rust; Hyperspectral; Characteristic Spectrum; Inversion Model Abstract.
Material and Methods Experimental conditions The experiment was conducted at the Research and Demonstration Basement of National Precision Agriculture, which located in Xiaotangshan town.
It was reported that the wavelength region 900~1300nm includes some water absorption bands and the overtone absorption bands of C-H, N-H, and O-H groups that compose organic materials.
Following variable (y) Independent variable (x) Regression equation Square multiple Correlation coefficient Disease incidence NDVI y=-143.11x+165.41 R2=0.759 Disease incidence RVI y=-7.288x+111.74 R2=0.811 Disease incidence TVI y=-304.16x+398.17 R2=0.751 Disease incidence DVI y=-1.740x+104.89 R2=0.552 Disease incidence ρλ680nm y=25.118x0.6832 R2=0.324 Disease incidence ρλ976nm y=-39.436Ln(x)+194.31 R2=0.496 Disease incidence Δρλ1536 y=135.43e-15.115x R2=0.777 Disease incidence ρλ680nm; ρλ976nm; ρλ1010nm y=6.01x1-51.75x2+47.60x3+92.99 x1=ρλ680nm; x2=ρλ976nm; x3=ρλ1010nm Chart 1 Inversion models for monitoring DI of winter wheat stripe rust Acknowledgement In this paper, the research was sponsored by the National Nature Science Foundation of China (Project No. 41101395) and the Key Project of Excellent Researcher Award Program from Anhui Institute of Education (Project No. 2013SQRL047ZD).
[5] Zhang Jingcheng, Yuan Lin, Wang Jihua, Luo Juhua, Du Shizhou, Huang Wenjiang.Research progress of crop diseases and pests monitoring based on remote sensing [J].Transactions of the Chinese Society of Agricultural Engineering. 2012.20:45-53
Online since: October 2010
Authors: Gang Liu, Gui Cheng Wang, Shu Lin Wang, Chun Gen Shen
Determining Structural Modes of HSK Tool System Based on FEM and EMA Chungen SHEN 1,a, Guicheng WANG1,b , Shulin WANG 1, Gang LIU 2 1 School of Mechanical Engineering, Jiangsu University, Zhenjiang, Jiangsu, 212013, China 2 Shanghai Tool Works Co.
Table 1 Material properties of HSK63E standard shaft Material Density [Kg/mm3] Young's modulus [GPa] Poisson ratio Yield strength [MPa] Tensile strength limit [MPa] AISI_Steel_4340 7.85e-006 193 0.284 1178 1240 Table2 The free modal parameters of HSK63E standard shaft Modal No. 1 2 3 4 frequency [Hz] 3021 5572 7047 10220 Description of modal shape Tool holder and cutter bar bended towards same directional of Tool holder and cutter bar twisted towards the reverse direction Tool holder and cutter bar second-bended towards the reverse direction Tool holder cone twisted Position of Max deformation Bottom of the cutter bar Bottom of the cutter bar Joint of tool holder and cutter bar Tool holder cone Fig.2 The first four mode shape of HSK63E standard shaft's free modal According to the HSK tool holder working principle and double-contact positioning demands, with cylindrical coordinate system,
At present, EMA has become the most important method of vibration analysis in the mechanical engineering.
The key step of EMA is to get the eigenvector, the specific approach is as follow: The structural components to be tested should be manual incentive under the static state, and get frequency response function between the incentive points and the measurement points by measuring the exciting force and response signal, the frequency response function matrix was established and the structural modal parameters was gained by fitting the mobility function curve with modal analysis theory, so the modal model of the structure was established [7].
(Faculty of Engineering, Katholieke Universitiet Leven, Belgium 1997).
Online since: July 2011
Authors: Yu Chao Tang, Xian Huai Huang, Chang Nian Wu, Li Hua Tang, Li Ping Xue, Fa Kang Pan
Characterization and Photocatalytic Activity of N/TiO2 Prepared by a Mechanochemica1 Method Using Various Nitrogenous Compounds Yuchao Tang1,2a*, Xianhuai Huang1b, Changnian Wu1,2c*,Lihua Tang1,2, Liping Xue1, Fakang Pan1 1 Laboratory of Water Pollution Control and Wastewater Reuse, Department of Environmental Engineering, Anhui University of Architecture, Hefei, 230022, P R China 2 School of Chemistry and Materials Science, University of Science and Technology of China, Hefei, 230026, P R China *Corresponding author. a tangyc@aiai.edu.cn, bxhhuang2@gmail.com, ccnwu@aiai.edu.cn Keywords: TiO2, Mechanochemica1; Nitrogen-doped; Photocatalyst; Nitrogenous compound Abstract.
Experimental 2.1 Materials and methods TiO2 (CP) was purchased from Shanghai Qianjin Chemical Reagent Company, China.
The titanium dioxide was used as a raw material.
Solar Energy Materials & Solar Cells , 2005, 88: 269-280 [5].
Materials, 2005, 6: 143-148 [8].
Online since: February 2018
Authors: Yan Dong Wang, Ryota Arakida, Yuji Koetaka, Tatsuya Nakano, Iathong Chan
Cyclic Behavior of Panel Zone in Steel Moment Frame under Bidirectional Loading Yandong Wang1,a, Ryota Arakida2,b, Iathong Chan3,c, Yuji Koetaka4,d* and Tatsuya Nakano5,e 1,2,3,4Department of Architecture and Architectural Engineering, Kyoto University, Kyoto, Japan 5Department of Architecture and Urban Design, Utsunomiya University, Utsunomiya, Japan awangyd19910112@gmail.com, bxjgsr017@ybb.ne.jp, cchan.hong.45r@st.kyoto-u.ac.jp, dkoetaka@archi.kyoto-u.ac.jp, enakanot@cc.utsunomiya-u.ac.jp Keywords: Panel zone, bidirectional loading, unidirectional loading, plastic strength, FE analysis Abstract.
Table 2 shows the measured material properties of steel by tensile coupon tests.
The materials of wire elements were assigned as elastic.
The materials of solid elements were accounted for material nonlinearities using plasticity theory based on Von Mises yield criterion, and the stress-strain properties were referred to the coupon test.
Combined isotropic and kinematic hardening was considered for the solid-element material during cyclic analyses.
Online since: March 2008
Authors: Werner Riehemann, Agnieszka Mielczarek, Marcin Marczyk
Influence of thermal cycling and equivalent heat treatment on amplitude dependence of internal friction in Cu - Al - Mn shape memory alloys Agnieszka Mielczareka, Marcin Marczyk, and Werner Riehemannb Institute of Materials Science and Technology, Clausthal University of Technology, Agricolastr. 6, D-38678 Clausthal-Zellerfeld, Germany a agnieszka.mielczarek@tu-clausthal.de, bwerner.riehemann@tu-clausthal.de Dedicated to Prof.
These transformations involve a change in the packing density and cause microstructural changes in the material.
Similar effects were found for other bulk and foam materials, for example in [14].
This interpretation could be supported by the fact, that cracks were found in the thermally cycled material (Fig. 3b).
Tonn: Key Engineering Materials.
Showing 69481 to 69490 of 74333 items