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Online since: December 2012
Authors: Begum S. Rashia, G. Arumaikkannu, B. Ashiq
The customised bone scaffolds are porous materials and their properties and mechanical behavior are largely determined by their porous microstructure.
Table 3 Machine Details Effective building volume 200[mm]*250[mm]*330[mm][7.9*9.8*13 in] Building speed (material-dependent) Up to 24mm height/h[0.94 in/h] Layer thickness (material-dependent) Typically 0.1mm [0.004 in] Support structure Not necessary Laser type CO2, 30w Precision optics f-theta lens Scan speed during build process Up to 5 m/s [16.4 ft/sec] Wall thickness Not less than 1[mm] Laser beam diameter Approximately 0.6-0.7[mm] Accuracy-Dimensions<100[mm] +/-0.1[mm] Accuracy-Dimensions>100[mm] +/-0.3[%] Fig. 5 Polyamide bone scaffold Fabrication.
Journal of Materials science: Materials in Medicine 12, 471-478
Table 3 Machine Details Effective building volume 200[mm]*250[mm]*330[mm][7.9*9.8*13 in] Building speed (material-dependent) Up to 24mm height/h[0.94 in/h] Layer thickness (material-dependent) Typically 0.1mm [0.004 in] Support structure Not necessary Laser type CO2, 30w Precision optics f-theta lens Scan speed during build process Up to 5 m/s [16.4 ft/sec] Wall thickness Not less than 1[mm] Laser beam diameter Approximately 0.6-0.7[mm] Accuracy-Dimensions<100[mm] +/-0.1[mm] Accuracy-Dimensions>100[mm] +/-0.3[%] Fig. 5 Polyamide bone scaffold Fabrication.
Journal of Materials science: Materials in Medicine 12, 471-478
Online since: March 2012
Authors: Calin Octavian Miclosina, Constantin Viorel Câmpian
All component parts have assigned materials; from SolidWorks materials library, stainless steel (ferritic) is chosen for the links 1j.
The fatigue (S-N) curve for link 1j material, provided by SolidWorks software, is shown in Fig. 12.
Baeker, Mechanical Behaviour of Engineering Materials, Springer - Teubner Verlag, Wiesbaden, 2006
Vela, Dynamic Study of Low Level Links of a Parallel Topology Robot Guiding Device Using Finite Element Method, Models and Methods in Applied Sciences.
Nonami, A 3D Simulator Modelling for Hydraulic-Drive Hexapod Walking Robot Using 3D Geometric Technique with Distributed Numerical Model, ICGST- ARAS Journal.
The fatigue (S-N) curve for link 1j material, provided by SolidWorks software, is shown in Fig. 12.
Baeker, Mechanical Behaviour of Engineering Materials, Springer - Teubner Verlag, Wiesbaden, 2006
Vela, Dynamic Study of Low Level Links of a Parallel Topology Robot Guiding Device Using Finite Element Method, Models and Methods in Applied Sciences.
Nonami, A 3D Simulator Modelling for Hydraulic-Drive Hexapod Walking Robot Using 3D Geometric Technique with Distributed Numerical Model, ICGST- ARAS Journal.
Online since: June 2019
Authors: Romualdo Rodrigues Menezes, Braga Aluska do Nascimento Simões, Simões Veruska do Nascimento, Neves Gelmires de Araújo, Valdeci Bosco dos Santos, Gomes Déborah dos Santos
Introduction
The production of ceramic fibers with diameter at submicron and nanometric scales has manifested great interest in the science and technology fields due to its potentiality of high performance applications offered by these materials.
This tendency is related to their small dimensions, which provide high surface area /volume ratio and high aspect ratio, making these materials to present new and extraordinary physical, chemical and mechanical properties.
This new method has been used successfully for the production of micro and nanofibres of various materials [5-7].
Materials and Methods To obtain the nanofibers, the following reagents were used: Poly(vinyl) pyrrolidone (PVP), absolute P.A. ethyl alcohol, tetraethylorthosilicate (TEOS), hydrochloric acid (HCl), silver nitrate (AgNO3) and dimethylformamide (DMF).
Khosroshahi: Journal of the Textile Institute Vol. 101 (2010), p. 204.
This tendency is related to their small dimensions, which provide high surface area /volume ratio and high aspect ratio, making these materials to present new and extraordinary physical, chemical and mechanical properties.
This new method has been used successfully for the production of micro and nanofibres of various materials [5-7].
Materials and Methods To obtain the nanofibers, the following reagents were used: Poly(vinyl) pyrrolidone (PVP), absolute P.A. ethyl alcohol, tetraethylorthosilicate (TEOS), hydrochloric acid (HCl), silver nitrate (AgNO3) and dimethylformamide (DMF).
Khosroshahi: Journal of the Textile Institute Vol. 101 (2010), p. 204.
Online since: May 2007
Authors: Li Jia Chen, Zhen Liu, Chang Yi Wang
Low-cycle Fatigue Behavior of Three Die Cast Magnesium Alloys
Changyi Wang1,2,a ,Zhen Liu
1,b, Lijia Chen1,c
1
School of Materials Science and Engineering, Shenyang University of Technology, Shenyang
110023, China
2
Department of Materials Engineering, Bohai Shipbuilding Vocational College, Huludao125000,
China
a
cywang1969@yahoo.com.cn,b liuzh@sut.edu.cn,cchenlj-sut@163.com
Key words: magnesium alloy; cyclic deformation; low-cycle fatigue; cyclic hardening
Abstract.
Experimental procedure The materials used for present investigation are AZ91HP, AM50HP, AE42 die cast plates.
Froes:Advsnced Performance Materials 5(1998),p.201 [2]I.J.Polmear:Mater.
Eifler:International Journal of Fatigue 26(2004),p.1357 Table 1.
Experimental procedure The materials used for present investigation are AZ91HP, AM50HP, AE42 die cast plates.
Froes:Advsnced Performance Materials 5(1998),p.201 [2]I.J.Polmear:Mater.
Eifler:International Journal of Fatigue 26(2004),p.1357 Table 1.
Online since: May 2011
Authors: Zhao Qun Du, Yun Xu, Weidong Yu
Introduction
It is well known that environment should be protected by adopting eco-friendly materials, which necessitated the development and investigation of biodegradable polymers.
It is one of the most popular biodegradable polymers materials for its better physical property and thermoplastic and biological properties.
Materials and Methods 13 Polylactic fibers were selected for elementary analysis, gas chromatography mass spectrum, IR spectrocopy, Ultraviolet testing and X-ray tests.
So, it can not be used to have an identification of PLA fiber with other fibers, while it can be used good anti ultraviolet light materials.
Shafer: Journal of Industrial Textile, Vol.59 (1998), p. 145-152 [5] X.
It is one of the most popular biodegradable polymers materials for its better physical property and thermoplastic and biological properties.
Materials and Methods 13 Polylactic fibers were selected for elementary analysis, gas chromatography mass spectrum, IR spectrocopy, Ultraviolet testing and X-ray tests.
So, it can not be used to have an identification of PLA fiber with other fibers, while it can be used good anti ultraviolet light materials.
Shafer: Journal of Industrial Textile, Vol.59 (1998), p. 145-152 [5] X.
Online since: July 2017
Authors: S.N. Grigoriev, N.M. Bobrovskij, Igor N. Bobrovskij, Abdumalik Rakhimovich Seitkulov, Aleksey A. Lukyanov
Profilograms of grooves wear of rear gland neck surface for seal made of high-strength cast iron 75-50-03 after finishing with: a) polishing; b) wide burnishing
Results and Discussion
Surface roughness of the metallic shaft has a decisive role in friction and wear of rubber seal due to the significant difference of mechanical properties (hardness, modulus of elasticity) of friction materials.
In particular within the research were received comparison results of burnishing and polishing processing: width of the grooves wear was 936 microns and 1152 microns, depth was 2.16 and 4.94 microns respectively; - compliance of the specimens surface with surfaces of the real parts (material sort, hardness, manufacturing method, processing modes, instrument); Studies have shown that the dependence of the main indicators of the surface layer quality on the burnishing technological factors similar to the typical curves for other metallic materials.
Komvopoulos A slip-line plasticity analysis of sliding friction of rough surfaces exhibiting self-affine (fractal) behavior, Journal of the Mechanics and Physics of Solids, 60(3) (2012).
Melnikov, A.A., Lukyanov, Environmental Aspects Of The Green Surface Plastic Deformation Technology Of Car Parts, IOP Conference Series: Earth and Environmental Science, 50 (2017) 012015
Khaimovich The study of plastic deformation at high strain rates in upset forging of cylinders, Key Engineering Materials, 684 (2016) 74-79.
In particular within the research were received comparison results of burnishing and polishing processing: width of the grooves wear was 936 microns and 1152 microns, depth was 2.16 and 4.94 microns respectively; - compliance of the specimens surface with surfaces of the real parts (material sort, hardness, manufacturing method, processing modes, instrument); Studies have shown that the dependence of the main indicators of the surface layer quality on the burnishing technological factors similar to the typical curves for other metallic materials.
Komvopoulos A slip-line plasticity analysis of sliding friction of rough surfaces exhibiting self-affine (fractal) behavior, Journal of the Mechanics and Physics of Solids, 60(3) (2012).
Melnikov, A.A., Lukyanov, Environmental Aspects Of The Green Surface Plastic Deformation Technology Of Car Parts, IOP Conference Series: Earth and Environmental Science, 50 (2017) 012015
Khaimovich The study of plastic deformation at high strain rates in upset forging of cylinders, Key Engineering Materials, 684 (2016) 74-79.
Online since: December 2012
Authors: Oswyn K. Wattimena, Antoni Antoni, Djwantoro Hardjito
Introduction
Durability is one of the characteristics of construction materials that is important, especially on structural elements in aggressive environment.
Thus it is a special concern to have higher durability property in the material.
The total of cementitious material was set at 400kg/m3.
International Conference on Durability of Building Materials and Components, 10.
Journal of Engineering Science and Technology Review, Vol.3, No.1 , pp. 36-40
Thus it is a special concern to have higher durability property in the material.
The total of cementitious material was set at 400kg/m3.
International Conference on Durability of Building Materials and Components, 10.
Journal of Engineering Science and Technology Review, Vol.3, No.1 , pp. 36-40
Online since: August 2016
Authors: Gelmires Araújo Neves, Heber Carlos Ferreira, J.M.R. de Figueirêdo, Romualdo Rodrigues Menezes, P.L. de Oliveira, L.N.L. Santana
Luz and Chaves (3) report that kaolin usually contains accessories, which may represent from 40% to 50% in volume of the extracted material, and sometimes even more than this.
Hydrocycloning is a modern process which is frequently used for the separation of materials based on the differences between the sizes of the particles, which is achieved with efficiency and low cost, separating the larger and denser particles from the smaller and less dense ones (8).
Materials and Methods Materials.
(International Series in the Earth and Planetary Sciences.
Pen: Journal of the European Ceramic Society Vol. 34 (5) (2014), p. 1409
Hydrocycloning is a modern process which is frequently used for the separation of materials based on the differences between the sizes of the particles, which is achieved with efficiency and low cost, separating the larger and denser particles from the smaller and less dense ones (8).
Materials and Methods Materials.
(International Series in the Earth and Planetary Sciences.
Pen: Journal of the European Ceramic Society Vol. 34 (5) (2014), p. 1409
Online since: October 2016
Authors: Gladys Patricia Abdel Rahim, Jairo Arbey Rodríguez, M. Guadalupe Moreno-Armenta
These materials have attracted considerable interest due to their unique physical properties, such as extremely high melting temperature and hardness, as well as high thermal and electrical conductivity [1-4].
Metallic behavior is exhibited for WZ type (B4), but the material is semi metallic for ZnS type (B3), which is a surprise and suggests that the material can be used for additional applications.
However, none of the materials exhibited a magnetic behaviour.
Carter, Structure, bonding, and adhesion at the ZrC (100)/Fe (100) interface from first principles, Surface Science 560 (2004) 103-102
Giannozzi, et al, 2009, Quantum espresso: a modular and open-source software for quantum simulations of materials, J.Phys.: Condens.
Metallic behavior is exhibited for WZ type (B4), but the material is semi metallic for ZnS type (B3), which is a surprise and suggests that the material can be used for additional applications.
However, none of the materials exhibited a magnetic behaviour.
Carter, Structure, bonding, and adhesion at the ZrC (100)/Fe (100) interface from first principles, Surface Science 560 (2004) 103-102
Giannozzi, et al, 2009, Quantum espresso: a modular and open-source software for quantum simulations of materials, J.Phys.: Condens.
Online since: December 2024
Authors: Tien Hung Pham, Van Hoang Nguyen, Dinh Hoat Phung, Minh Hieu Nguyen, Manh Hung Nguyen
At such high operating temperatures, metal oxides were considered the most potential candidate for the sensing material layer.
Materials Science and Engineering: B, 2018. 229: p. 206-217
International Journal of Hydrogen Energy, 2024
International Journal of Hydrogen Energy, 2024. 50: p. 928-941
Journal of Catalysis, 1999. 184(2): p. 526-534
Materials Science and Engineering: B, 2018. 229: p. 206-217
International Journal of Hydrogen Energy, 2024
International Journal of Hydrogen Energy, 2024. 50: p. 928-941
Journal of Catalysis, 1999. 184(2): p. 526-534