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Online since: October 2007
Authors: José Manuel Torralba, M.L. Delgado, Elisa Maria Ruiz-Navas
Characteristics of the raw materials.
The requirement of lighter materials with high specific strength and stiffness has led to the development of a wide range of MMCs as an alternative to the conventional engineering alloys and the research on the ceramic reinforced MMCs has increased significantly.
It can be seen how elevated TiCN quantities avoid Cu diffusion, which would affect to materials densification.
As solution, liquid phases are employed to aid in materials consolidation
Sandström, Key Eng.
The requirement of lighter materials with high specific strength and stiffness has led to the development of a wide range of MMCs as an alternative to the conventional engineering alloys and the research on the ceramic reinforced MMCs has increased significantly.
It can be seen how elevated TiCN quantities avoid Cu diffusion, which would affect to materials densification.
As solution, liquid phases are employed to aid in materials consolidation
Sandström, Key Eng.
Online since: June 2016
Authors: Buta Singh Sidhu, Sukhpal Singh Chatha, Hazoor S. Sidhu
Failure of heat exchanger tubes in coal-fired boilers has become a key material issue in the design and operation of thermal power plants and is recognized as being one of the main causes of downtime in these installations [6-8].
Therefore, the development of wear and high-temperature oxidation protection systems for industrial boilers is a very important topic from both engineering and economic perspective [6].
This technique provides higher kinetic energy of the particulates and lower melting coating materials that enable particle-flattening in the plastic state [14].
Materials The substrate material selected for the study was T91boiler tube steel.
Bennet, The Interaction of Surface Engineering and High Temperature Corrosion Protection, Mater.
Therefore, the development of wear and high-temperature oxidation protection systems for industrial boilers is a very important topic from both engineering and economic perspective [6].
This technique provides higher kinetic energy of the particulates and lower melting coating materials that enable particle-flattening in the plastic state [14].
Materials The substrate material selected for the study was T91boiler tube steel.
Bennet, The Interaction of Surface Engineering and High Temperature Corrosion Protection, Mater.
Online since: July 2015
Authors: Chung Yi Huang, Jiing Yih Lai, Yu Kai Chiu, Chia Hsiang Hsu, Yao Chen Tsai, Ming Hsuan Wang
On the Development of Virtual Inner Loops for Feature Recognition
Ming-Hsuan Wang1*, Jiing-Yih Lai1, Yu-Kai Chiu1
Chia-Hsiang Hsu2, Yao-Chen Tsai2, and Chung-Yi Huang2
1Department of Mechanical Engineering, National Central University, Jhongli, Taiwan
2CoreTech System (Moldex3D) Co., Ltd., Hsinchu, Taiwan
* a7512cs@hotmail.com
Keywords: Virtual inner loop, Feature recognition, Hole recognition, Rib recognition
Abstract
Typical feature recognition algorithms in industrial applications are primarily used for solving cases where a feature locates on a single face only.
The loop data identified within a face or across multiple faces is the key point in the proposed algorithm for the recognition of different kinds of features.
Fan, Automatic small depression feature recognition from solid B-rep models for meshing, 2011 International Conference on Electrical and Control Engineering, ICECE 2011 - Proceedings, (2011) 4386-4389
Kim, Recognition of pass features for automatic parting surface generation in injection moulds, Proceedings of the Institution of Mechanical Engineers, Part B: Journal of Engineering Manufacture, 216 (2002) 783-796
Huang, On the Development of Holes Recognition Algorithm for CAE Applications, 2014 International Conference on Machining, Materials and Mechanical Technologies, (2014) to appear.
The loop data identified within a face or across multiple faces is the key point in the proposed algorithm for the recognition of different kinds of features.
Fan, Automatic small depression feature recognition from solid B-rep models for meshing, 2011 International Conference on Electrical and Control Engineering, ICECE 2011 - Proceedings, (2011) 4386-4389
Kim, Recognition of pass features for automatic parting surface generation in injection moulds, Proceedings of the Institution of Mechanical Engineers, Part B: Journal of Engineering Manufacture, 216 (2002) 783-796
Huang, On the Development of Holes Recognition Algorithm for CAE Applications, 2014 International Conference on Machining, Materials and Mechanical Technologies, (2014) to appear.
Online since: June 2013
Authors: D.J. Wolthuizen, R. Akkerman, R.H.W. Ten Thije
Akkerman1,2, c
1Faculty of Engineering Technology, Chair of Production Technology, University of Twente, Drienerlolaan 5, P.O.
Intra-Ply Shear Locking Intra-ply shear locking is the inability of standard finite elements to represent accurately the in-plane shear deformation in fiber reinforced composite materials.
Akkerman, “Forming of thermoplastic composites,” in Key Engineering Materials, 2012, vol. 504–506, pp. 237–242
Pipes, “Pathologies associated with the numerical analysis of hyper-anisotropic materials,” International Journal for Numerical Methods in Engineering, vol. 36, no. 20, pp. 3487–3508, 1993
Akkerman, “Solutions to intra-ply shear locking in finite element analyses of fibre reinforced materials,” Composites Part A: Applied Science and Manufacturing, vol. 39, no. 7, pp. 1167–1176, Jul. 2008
Intra-Ply Shear Locking Intra-ply shear locking is the inability of standard finite elements to represent accurately the in-plane shear deformation in fiber reinforced composite materials.
Akkerman, “Forming of thermoplastic composites,” in Key Engineering Materials, 2012, vol. 504–506, pp. 237–242
Pipes, “Pathologies associated with the numerical analysis of hyper-anisotropic materials,” International Journal for Numerical Methods in Engineering, vol. 36, no. 20, pp. 3487–3508, 1993
Akkerman, “Solutions to intra-ply shear locking in finite element analyses of fibre reinforced materials,” Composites Part A: Applied Science and Manufacturing, vol. 39, no. 7, pp. 1167–1176, Jul. 2008
Online since: June 2019
Authors: Adrian Lucian Ghionea, Constantin Gheorghe Opran, Gabriel Ionuţ Ghionea
Researches on the Design and Operation of a Magnetic Drive Micropump for the Mixing of Compatible Fluids
GHIONEA Gabriel Ionuţ1,a*,
GHIONEA Adrian Lucian2,b and OPRAN Constantin Gheorghe1,c
1University Politehnica of Bucharest, Faculty of Engineering and Management of Technological Systems, Department of Manufacturing Engineering, Spl.
Independenţei nr. 313, district 6, Bucharest, Romania 2University Politehnica of Bucharest, Faculty of Engineering and Management of Technological Systems, Department of Machine and Production Systems, Spl.
Mixing of fluids occurs frequently in process engineering.
To achieve sustainability in manufacturing the gear pumps, the design team should follow some key objectives, like: material saving, waste reduction, minimizing energy consumption, maintaining economic efficiency, etc.
Another direction of study may also be an analysis of the choice and confirmation of the component’s materials proposed in the paper [3].
Independenţei nr. 313, district 6, Bucharest, Romania 2University Politehnica of Bucharest, Faculty of Engineering and Management of Technological Systems, Department of Machine and Production Systems, Spl.
Mixing of fluids occurs frequently in process engineering.
To achieve sustainability in manufacturing the gear pumps, the design team should follow some key objectives, like: material saving, waste reduction, minimizing energy consumption, maintaining economic efficiency, etc.
Another direction of study may also be an analysis of the choice and confirmation of the component’s materials proposed in the paper [3].
Dependency Graph Based on User Taxonomy and Related Parameters for more Efficient Collaborative Work
Online since: August 2017
Authors: Franca Alexandra Rupprecht, Achim Ebert, François M. Torner, Jörg Seewig
Mainly performed disciplines in many industrial corporations are mechanical engineering, industrial engineering, electronic engineering, and computer science.
Mechanical engineering is one of the main disciplines performed within an industrial corporation, performing the tasks of design, analysis, manufacturing, and maintenance of mechanical systems and assigns the principles of engineering, physics, and materials science, subdivided in the disciplines shown in Fig. 3, column 1.
Sub-disciplines of industrial engineering are listed in Fig. 3, column 2.
Fig. 3, column 3 lists the sub-disciplines of electrical engineering.
Like already mentioned, this program covers disciplines from mechanical engineering, industrial engineering, electrical engineering, and computer science allocated on given levels: process, machine, factory, and bridging (cf.
Mechanical engineering is one of the main disciplines performed within an industrial corporation, performing the tasks of design, analysis, manufacturing, and maintenance of mechanical systems and assigns the principles of engineering, physics, and materials science, subdivided in the disciplines shown in Fig. 3, column 1.
Sub-disciplines of industrial engineering are listed in Fig. 3, column 2.
Fig. 3, column 3 lists the sub-disciplines of electrical engineering.
Like already mentioned, this program covers disciplines from mechanical engineering, industrial engineering, electrical engineering, and computer science allocated on given levels: process, machine, factory, and bridging (cf.
Online since: January 2012
Authors: Wen Jin Liu, Jing Xin Hao
Center of Furniture and Furnishing, Changsha, Hunan, 410004, China
ahaojingxin1@163.com, bcsfulwj@163.com
Key Words: BP artificial network, time study, automatic edgebanding machine, Matlab R2009b.
Test material, equipment, test method Material.
The test materials are melamine boards, thickness is 18mm, the base board is MDF made from Dare Global (Asia) Company, and the test board includes different size, such as the small one for drawer front board, the middle one for shelf of wardrobe, the big one for side board of wardrobe.
Generally the feeding speed of machine is set up at high level to avoid the waiting of operator, so the feeding speed is set up at 25m/min for this experiment which lead to the different distance between two parts, and the operation time should be watched and measured by engineer.
There are two methods to measure the time: one is called the direct measurement method, the engineer directly measure the parts operation time by stop watch when he stands up beside the operator; another is called indirect measurement method, the engineer will not directly measure the operation time, but to measure the distance between two parts, then the time is calculated by the formation (t= (l1+l2)/v).
Test material, equipment, test method Material.
The test materials are melamine boards, thickness is 18mm, the base board is MDF made from Dare Global (Asia) Company, and the test board includes different size, such as the small one for drawer front board, the middle one for shelf of wardrobe, the big one for side board of wardrobe.
Generally the feeding speed of machine is set up at high level to avoid the waiting of operator, so the feeding speed is set up at 25m/min for this experiment which lead to the different distance between two parts, and the operation time should be watched and measured by engineer.
There are two methods to measure the time: one is called the direct measurement method, the engineer directly measure the parts operation time by stop watch when he stands up beside the operator; another is called indirect measurement method, the engineer will not directly measure the operation time, but to measure the distance between two parts, then the time is calculated by the formation (t= (l1+l2)/v).
Online since: July 2020
Authors: Laxman B. Abhang, M. Hameedullah, Mohd Iqbal
Iqbal2,b* and Hameedullah M.3,c
1Mechanical Engineering Dept.
Loni, SPPU, PUNE, India 2Mechanical and Industrial Engineering, Faculty of Engineering, Universitas Syiah Kuala, Banda Aceh, Indonesia 3Mechanical Engineering Dept.
Sridhar. , Multi-Response Optimization on En19 Steel Using Grey Relational Analysis Through Dry & Wet Machining, Materials Today: Proceedings 4, (2017), pp. 2157–2166
Materials Today: Proceedings, (2015), 2(4-5), pp, 2496-2503
Arabian Journal for Science and Engineering. (2017), pp. 1-7
Loni, SPPU, PUNE, India 2Mechanical and Industrial Engineering, Faculty of Engineering, Universitas Syiah Kuala, Banda Aceh, Indonesia 3Mechanical Engineering Dept.
Sridhar. , Multi-Response Optimization on En19 Steel Using Grey Relational Analysis Through Dry & Wet Machining, Materials Today: Proceedings 4, (2017), pp. 2157–2166
Materials Today: Proceedings, (2015), 2(4-5), pp, 2496-2503
Arabian Journal for Science and Engineering. (2017), pp. 1-7
Online since: March 2025
Authors: Mustapha Diani, Mohamed Zanouni, Hamza Rghioui, Adil Marjaoui, Mohamed Ait Tamerd
The measurement of the degree of anisotropy in materials can be inferred from the elastic anisotropy coefficient (A), which can be used to examine the possible micro-cracks in materials in engineering sciences.
Additionally, the refractive index was calculated from the complex dielectric function, which is a key parameter in understanding the optical properties of materials and has a major influence on optical devices such as solar cells and detectors, as seen in Fig.6 (a).
The optical absorption of the materials is shown in Fig. 7(b).
Martín Pendás, Ions in crystals: The topology of the electron density in ionic materials.II.
Grimvall, Thermophysical Properties of Materials, first ed., Elsevier, 1999
Additionally, the refractive index was calculated from the complex dielectric function, which is a key parameter in understanding the optical properties of materials and has a major influence on optical devices such as solar cells and detectors, as seen in Fig.6 (a).
The optical absorption of the materials is shown in Fig. 7(b).
Martín Pendás, Ions in crystals: The topology of the electron density in ionic materials.II.
Grimvall, Thermophysical Properties of Materials, first ed., Elsevier, 1999
Online since: January 2013
Authors: Hiroshi Yukawa, Tomonori Nambu, Yoshihisa Matsumoto
Matsumoto3, c
1Department of Materials Science and Engineering, Graduate School of Engineering,
Nagoya University, Japan
2Department of Materials Science and Engineering, Suzuka National College of Technology, Japan
3Department of Mechanical Engineering, Oita National College of Technology, Japan
ahiroshi@numse.nagoya-u.ac.jp, bnambu@mse.suzuka-ct.ac.jp, cmatumoto@oita-ct.ac.jp,
Keywords: hydrogen permeable membrane, hydrogen diffusion coefficient, activation energy, Nb–based alloy, hydrogen flux, hydrogen permeability, hydrogen solubility, resistance to hydrogen embrittlement, Ductile–to–Brittle Transition hydrogen Concentration (DBTC).
Hydrogen permeable alloy membranes are important key materials for the hydrogen separation and purification technologies.They are also important for the hydrogen production by membrane reactors.
Therefore, there has been a great demand for the development of new hydrogen permeable alloys in order to reduce the material cost as well as to improve the hydrogen permeability.
The purities of the raw materials used in this study are 99.96 mass% for Nb and 99.95 mass% for W and Mo.
Acknowledgement The research is partially supported by Grant–in–Aid for Scientific Research from Japan Society for the Promotion of Science (JSPS), Research Foundation for Materials Science and Iketani Science and Technology Foundation.
Hydrogen permeable alloy membranes are important key materials for the hydrogen separation and purification technologies.They are also important for the hydrogen production by membrane reactors.
Therefore, there has been a great demand for the development of new hydrogen permeable alloys in order to reduce the material cost as well as to improve the hydrogen permeability.
The purities of the raw materials used in this study are 99.96 mass% for Nb and 99.95 mass% for W and Mo.
Acknowledgement The research is partially supported by Grant–in–Aid for Scientific Research from Japan Society for the Promotion of Science (JSPS), Research Foundation for Materials Science and Iketani Science and Technology Foundation.