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Online since: February 2014
Authors: Chuan Gui Yang, Zhao Jun Yang, Fei Chen, Song Wang, Guang Zhu, Zhuang Tan
For analyzing its reliability, The Jilin University Key Laboratory of CNC Equipment Reliability Technique of Machinery industry has built a reliability test bench according to actual working conditions of the motorized spindle.
Journal of Mechanical Engineering, Vol. 6 (2013), p.89-98
Control Engineering Fundamentals.
Harbin: Harbin Engineering University Press (1992), p.128-192
Applied Mechanics and Materials, Vol. 397-400 (2013), p.1296-1303
Journal of Mechanical Engineering, Vol. 6 (2013), p.89-98
Control Engineering Fundamentals.
Harbin: Harbin Engineering University Press (1992), p.128-192
Applied Mechanics and Materials, Vol. 397-400 (2013), p.1296-1303
Online since: January 2014
Authors: Xiao Song Zhang, Long Yun, Xiang Lei Kong, Xin Li Zi
An Experimental Research on Wall Radiant Cooling and Wall-attached-jet Air-conditioning System
Xianglei Kong1,2, a, Xinli Zi2,b, Long Yun2,c and Xiaosong Zhang 1,d
1School of Energy and Environment, Southeast University, Nanjing,210000,China
2School of Energy and Power Engineering, Jiangsu University of Science and Technology, Zhenjiang, China
asallykxl@163.com, bzixinli.1988@163.com, cyunlong1991@126.com, drachpe@163.com
Keywords: Radiant Cooling，Wall-attached-jet，Experiment Research，Condensation Prevention Thermal Comfort.
The existing theories and engineering practices have proven that radiant cooling has outstanding advantages including high comfort performance, excellent energy-saving effect, transferring peak energy consumption, improving network efficiency, providing conditions for renewable resources of natural cooing quiet operation, saving building space, etc.
Due to the short tube length from the chiller to the radiant terminal and the effective insulation, it can be considered that the temperatures of supply and return water at the radiant terminal inlet and outlet are the same. 3.3.2 Anti-condensation Analysis Anti-condensation is the key of the operation of the radiant cooling system operation and the primary task of the system.
[3] Ma Yu-qi，Liu Xue-lai，Li Yong-an,et al.Thermal parameters analysis Of ceiling radiant panel air condiTioning system[J].Journal Of Shan Dong University,2007,22(5),PP.425-429 [4] Wang Zi-jie，Li Xian-zhong.Recent development and problems in the floor radiant cooling[J].Building Decoration Materials World.2008,(6),PP.32-34
Applied Thermal Engineering, 2008（11/12）.
The existing theories and engineering practices have proven that radiant cooling has outstanding advantages including high comfort performance, excellent energy-saving effect, transferring peak energy consumption, improving network efficiency, providing conditions for renewable resources of natural cooing quiet operation, saving building space, etc.
Due to the short tube length from the chiller to the radiant terminal and the effective insulation, it can be considered that the temperatures of supply and return water at the radiant terminal inlet and outlet are the same. 3.3.2 Anti-condensation Analysis Anti-condensation is the key of the operation of the radiant cooling system operation and the primary task of the system.
[3] Ma Yu-qi，Liu Xue-lai，Li Yong-an,et al.Thermal parameters analysis Of ceiling radiant panel air condiTioning system[J].Journal Of Shan Dong University,2007,22(5),PP.425-429 [4] Wang Zi-jie，Li Xian-zhong.Recent development and problems in the floor radiant cooling[J].Building Decoration Materials World.2008,(6),PP.32-34
Applied Thermal Engineering, 2008（11/12）.
Online since: June 2014
Authors: Hector Torres, Dieter Horwatitsch, Markus Varga, Karl Adam, Manel Rodríguez Ripoll
-C.; Jain, A.; Altan, T.: A finite element analysis of orthogonal machining using different tool edge geometries, Journal of Materials Processing Technology, 2004, 146, pp. 72-81
[ 9 ] Dogra, M.; Sharma, V.S.; Dureja, J.: Effect of tool geometry variation on finish turning – A Review, Journal of Engineering Science and Technology Review, 2011, 4, pp. 1-13
[ 10 ] Wang, X.Z.; Masood, S.H.: Investigation of die radius arc profile on wear behaviour in sheet metal processing of advanced high strength steels, Materials & Design, 2011, 32, pp. 1118-1128
[ 15 ] Varga, M.; Winkelmann, H.; Badisch, E.: Impact of microstructure on high temperature wear resistance, Procedia Engineering, 2011, 10, pp. 1291-1296
[ 20 ] Bäker, M.: Finite element simulation of high-speed cutting forces, Journal of Materials Processing Technology, 2006, 176, pp. 117-126
[ 9 ] Dogra, M.; Sharma, V.S.; Dureja, J.: Effect of tool geometry variation on finish turning – A Review, Journal of Engineering Science and Technology Review, 2011, 4, pp. 1-13
[ 10 ] Wang, X.Z.; Masood, S.H.: Investigation of die radius arc profile on wear behaviour in sheet metal processing of advanced high strength steels, Materials & Design, 2011, 32, pp. 1118-1128
[ 15 ] Varga, M.; Winkelmann, H.; Badisch, E.: Impact of microstructure on high temperature wear resistance, Procedia Engineering, 2011, 10, pp. 1291-1296
[ 20 ] Bäker, M.: Finite element simulation of high-speed cutting forces, Journal of Materials Processing Technology, 2006, 176, pp. 117-126
Online since: March 2021
Authors: Juliane Fichtner, Tobias Ulrich, Ines Dani, Philipp Dobeleit, Tobias Stoll, Mary Esther Ascheri
Introduction
In the last years, a significant increase in applications of additive manufacturing technologies for the production of direct metal parts can be observed, especially in the medical and aerospace industry but also in the field of engineering.
First approaches address multi-material printing by using insulating and conductive materials [1] as well as the integration of smart elements during the printing process [2].
A wide range of materials, including dielectric materials, can be processed.
Materials and Methods The silver paste was 1901-S acquired from Ferro Corporation.
In: IOP Conference Series: Materials Science and Engineering 480 (2019), S. 12016 [3] GGP Metalpowder AG.
First approaches address multi-material printing by using insulating and conductive materials [1] as well as the integration of smart elements during the printing process [2].
A wide range of materials, including dielectric materials, can be processed.
Materials and Methods The silver paste was 1901-S acquired from Ferro Corporation.
In: IOP Conference Series: Materials Science and Engineering 480 (2019), S. 12016 [3] GGP Metalpowder AG.
Online since: April 2012
Authors: Guo Zhen Wang, Fu Zhen Xuan, Chang Jun Liu, Hai Tao Wang, Shan Tung Tu
(a), and the materials composed of the DMWJ are shown in Fig.1 (b).
Also, it can be found that the tensile properties of these materials are sensitive to the temperature more or less.
Moreover, it is found that the UE drastically changes in the interface zones between the materials.
Some simplified engineering integrity assessment methods and LBB analysis have been developed for treating the problem of weld joints, and the concept of equivalent material properties is utilized so that the integrity assessment method and LBB analysis for single material can be used for the joints [11, 4].
The engineering treatment model.
Also, it can be found that the tensile properties of these materials are sensitive to the temperature more or less.
Moreover, it is found that the UE drastically changes in the interface zones between the materials.
Some simplified engineering integrity assessment methods and LBB analysis have been developed for treating the problem of weld joints, and the concept of equivalent material properties is utilized so that the integrity assessment method and LBB analysis for single material can be used for the joints [11, 4].
The engineering treatment model.
Online since: October 2006
Authors: Jeong Woo Han, Seung Ho Han
Fatigue Crack Propagation Life of Welded Joints Related to the
Statistical Characteristics of Multiple Surface Cracks
Jeong-woo Han1,a and Seung-ho Han1,b
1
Mechanical Systems Reliability Research Center, Korea Institute of Machinery and Materials,
Jang-dong 171, Yuseong-gu, Daejeon, Korea
a
jwhan@kimm.re.kr, bseungho@kimm.re.kr
Keywords: Multiple surface cracks, Crack propagation life, Mk-factor, Probability of failure
occurrence, Monte-Carlo simulation.
The material used in the welded joints is SM490B(σy=352 MPa).
Kim : Key Engineering Materials, Vol. 297(2005), pp.781-787 [6] K.
The material used in the welded joints is SM490B(σy=352 MPa).
Kim : Key Engineering Materials, Vol. 297(2005), pp.781-787 [6] K.
Online since: March 2008
Authors: Tie Jun Wang, Gang Feng Wang, Zhi Ying Ou
Wang a
MOE Key Laboratory for Strength and Vibration, Department of Engineering Mechanics,
Xi'an Jiaotong University, Xi'an 710049, China
a
Email: wangtj@xjtu.edu.cn
Keywords: surface elasticity, spheroidal cavity, potential function, deformation.
Introduction Investigation of the stresses in solid with cavities is of great interest to material science, solid state physics, etc.
Zhang and Wang [11] investigated the effect of surface energy on the yield strength of nanoporous materials.
For nanosized devices and materials, the effect of surface energy becomes prominent and should be taken into account in analysis [8, 9, 11-14].
Introduction Investigation of the stresses in solid with cavities is of great interest to material science, solid state physics, etc.
Zhang and Wang [11] investigated the effect of surface energy on the yield strength of nanoporous materials.
For nanosized devices and materials, the effect of surface energy becomes prominent and should be taken into account in analysis [8, 9, 11-14].
Online since: January 2012
Authors: Xin Xing, Hai Feng Cheng, Yong Jiang Zhou, Dong Qing Liu, Dan Ni Qu
Effect Of Templates On The Electrochromic Properties Of
Tungsten Oxide Thin Films
Danni Qua, Haifeng Chengb, Yongjiang Zhouc, Xin Xingd and Dongqing Liue
Key Laboratory of Advanced Ceramic Fiber and Composites, College of Aerospace and Materials Engineering, National University of Defense Technology, Hunan Changsha, 410073, PR China
aqudanni880502@gmail.com, bhaifengcheng@163.com, czhouyj@nudt.edu.cn, dxingxin@nudt.edu.cn, eliudongqing@163.com
Keywords: tungsten oxide, thin film, sol-gel, template, electrochromic
Abstract.
Tungsten oxide (WO3) is the most widely studied electrochormic material, due to its high potential of electrochromic device (ECD) [2].
Lampert, Electrochromic materials and devices for energy efficient windows, Sol.
Tungsten oxide (WO3) is the most widely studied electrochormic material, due to its high potential of electrochromic device (ECD) [2].
Lampert, Electrochromic materials and devices for energy efficient windows, Sol.
Online since: June 2019
Authors: Ana Gavriluță
Lean Manufacturing represents the key element of development, a practical use of knowledge seems to represent a necessity of the present industrial environment.
Value Stream Mapping (VSM) in an advanced operational management tool, which makes the link between the flow of information and the flow of material, having as aim to highlight the existing wastes in a business system based on a Lean thinking.
The VSM is a diagram that includes in detail all the sequenced activities of information and material flow (Table 1).
The main categories of symbols are: - Symbols used to represent materials; - Symbols used for information flow representation; - General symbols.
Melton, The Benefits Of Lean Manufacturing What Lean Thinking has to Offer the Process Industries, Trans IChemE, Part A, Chemical Engineering Research and Design, 83(A6), (2005), p. 662–673A [4] https://www.biggerplate.com/mindmaps/QeAVL432/lean-seven-types-of-waste [5] H.
Value Stream Mapping (VSM) in an advanced operational management tool, which makes the link between the flow of information and the flow of material, having as aim to highlight the existing wastes in a business system based on a Lean thinking.
The VSM is a diagram that includes in detail all the sequenced activities of information and material flow (Table 1).
The main categories of symbols are: - Symbols used to represent materials; - Symbols used for information flow representation; - General symbols.
Melton, The Benefits Of Lean Manufacturing What Lean Thinking has to Offer the Process Industries, Trans IChemE, Part A, Chemical Engineering Research and Design, 83(A6), (2005), p. 662–673A [4] https://www.biggerplate.com/mindmaps/QeAVL432/lean-seven-types-of-waste [5] H.
Online since: July 2014
Authors: Jing Wu, Fei Ming Shen, Ping Jiang
Mechanism analysis and prevention method for tunnel fire
Jing Wu1,a,Feimin Shen1,b, Ping Jiang1,c
1College of Civil Engineering, Fuzhou University, Fuzhou, Fujian 350108, China
awujingcqu@163.com, b1003474815@qq.com, c13696867456@163.com
Keywords:Tunnel fire; Spontaneous combustion; Ambient temperature; Ventilation; Combustibles
Abstract:By analyzing the typical fire casesand tunnel fire statistics during 2008 to 2013 in Fujianprovince of China, results shows that the main causesfor the fire were vehicle accidents and spontaneous combustion.
Introduction In recent years, with the rapid development of the transport industry, tunnels are emerging and the trafficsare increasing.The number and the frequency of vehicles which carrying all kinds of combustible material through tunnel is growing, and also the frequency of tunnel fire is increasing year by year.
Combined with the types of flammable materials and combustion state, the tunnel fires classificationsare shown in Table 4.
In short, the maximum temperature and the product concentration in the reaction zone are the key parameters when solid combustible turn into the fire.
Most of the fires are simultaneously burning several combustible materials.
Introduction In recent years, with the rapid development of the transport industry, tunnels are emerging and the trafficsare increasing.The number and the frequency of vehicles which carrying all kinds of combustible material through tunnel is growing, and also the frequency of tunnel fire is increasing year by year.
Combined with the types of flammable materials and combustion state, the tunnel fires classificationsare shown in Table 4.
In short, the maximum temperature and the product concentration in the reaction zone are the key parameters when solid combustible turn into the fire.
Most of the fires are simultaneously burning several combustible materials.