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Online since: July 2011
Authors: Xin Jie Wang
To select the final product manufacturing processes (casting forming, forging and forming or welding shape.) is based on comprehensive analysis of its manufacturing cost factors, the stability of product quality and product durability factors cycle factors.
EPC process has been chosen on the basis of our understanding of the adapter environment using; Material selection of products to meet the main consideration of product performance, This includes mechanical properties, physical properties and chemical indicators of performance in their products to be able to ensure the safe and reliable operating environment.
Second, the origin of the coordinate system of work set in the punch face the highest point of the geometric center of the cavity, the calibration XC axis machining center with positive X-axis tool path consistent forward, rotating the axes to the axes in accordance with YC and ZC the properties of right-handed Cartesian coordinate system and processing center of its positive Y and Z axis of positive consistency.
Lesser extent, can be removed by mechanical processing methods, the extent of casting a direct result of heavier scrap.
The self-hardening sand cover will affect the foam model combustion exhaust gas resulting air gap phenomenon.
EPC process has been chosen on the basis of our understanding of the adapter environment using; Material selection of products to meet the main consideration of product performance, This includes mechanical properties, physical properties and chemical indicators of performance in their products to be able to ensure the safe and reliable operating environment.
Second, the origin of the coordinate system of work set in the punch face the highest point of the geometric center of the cavity, the calibration XC axis machining center with positive X-axis tool path consistent forward, rotating the axes to the axes in accordance with YC and ZC the properties of right-handed Cartesian coordinate system and processing center of its positive Y and Z axis of positive consistency.
Lesser extent, can be removed by mechanical processing methods, the extent of casting a direct result of heavier scrap.
The self-hardening sand cover will affect the foam model combustion exhaust gas resulting air gap phenomenon.
Online since: April 2011
Authors: Carlos José de Araújo, Antonio Almeida Silva, Bruno Allison Araújo, Gabriel Dias Travassos, Eudésio Oliveira Vilar, Jorge Palma Carrasco
In the industrial sectors affected for the hydrogen degradation, the petrochemical sector is one of the most prejudiced.
The degradation of mechanical properties as a result of hydrogen interaction with metals and metallic alloys is manifested by diverse ways: blisters on the surface of the material or internal cracks due to Hydrogen-Induced Cracking, fisheyes due to Hydrogen Attack, failure in non-ferrous based materials structures for Cracking from Hydride Formation, failure due to residual hydrogen in Cracking from Precipitation of Internal Hydrogen and catastrophic cracking of high strength steels due to Hydrogen Embrittlement.
The charging of hydrogen was performed for 24 h in absence of mechanical stress.
This can be explained by the fact that the location of hydrogen in regions with high levels of stress triaxial state is a factor that increases the process of hydrogen embrittlement [6].
Degree in Mechanical Engineering.
The degradation of mechanical properties as a result of hydrogen interaction with metals and metallic alloys is manifested by diverse ways: blisters on the surface of the material or internal cracks due to Hydrogen-Induced Cracking, fisheyes due to Hydrogen Attack, failure in non-ferrous based materials structures for Cracking from Hydride Formation, failure due to residual hydrogen in Cracking from Precipitation of Internal Hydrogen and catastrophic cracking of high strength steels due to Hydrogen Embrittlement.
The charging of hydrogen was performed for 24 h in absence of mechanical stress.
This can be explained by the fact that the location of hydrogen in regions with high levels of stress triaxial state is a factor that increases the process of hydrogen embrittlement [6].
Degree in Mechanical Engineering.
Online since: May 2017
Authors: Vasiliy Prokopenko, Gennadiy Pivnyak, Oleksandra Vagonova
Fertility affects the economic performance of the management and ultimately determines the financial stabilization of agricultural enterprises.
The structure, objectives and specific properties of the land market in the agricultural sector have been defined.The experience of regulating land relations and functioning of the land market and its infrastructures in foreign countries with market economies have been summarised in the book.
Reclamation works can be performed with the use of various technological equipment (at Ordzhonikidze Mining and Processing Plant quarries there are four principle technical projects: 1st – using scrapers and rotary mechanical shovel, 2nd – using walking dredge and rotary mechanical shovel, 3rd – using single bucket excavator and dump trucks and 4th – using scrapers).
If the reclaimed lands are transferred to the private property, their owner may not carry out the reclamation.
Bar chart of the distribution of the mining and processing plant loss due to land resources restoration Considering the factors of the undisturbed land acquisition and the reclaimed land use, the loss in i quarry follows the formula: Lpi =(( Pрi (Qli) – Pрi(Вр.m )) Sa Тe+ Вр.bi(Qр)) Sвi , UAH, (19) where Pрi( Qli) – is the function of the crop productivity from the bonitet score of the undisturbed land allocated to i quarry, kg/ha; Pрi(Вр.m) –function of the crop productivity on the reclaimed lands of i quarry from the costs of mining reclamation, kg/ha; Вр.bi(Qр)– function of the total cost of the biological reclamation from the bonitet score of the reclaimed land in i quarry, UAH/ha.
The structure, objectives and specific properties of the land market in the agricultural sector have been defined.The experience of regulating land relations and functioning of the land market and its infrastructures in foreign countries with market economies have been summarised in the book.
Reclamation works can be performed with the use of various technological equipment (at Ordzhonikidze Mining and Processing Plant quarries there are four principle technical projects: 1st – using scrapers and rotary mechanical shovel, 2nd – using walking dredge and rotary mechanical shovel, 3rd – using single bucket excavator and dump trucks and 4th – using scrapers).
If the reclaimed lands are transferred to the private property, their owner may not carry out the reclamation.
Bar chart of the distribution of the mining and processing plant loss due to land resources restoration Considering the factors of the undisturbed land acquisition and the reclaimed land use, the loss in i quarry follows the formula: Lpi =(( Pрi (Qli) – Pрi(Вр.m )) Sa Тe+ Вр.bi(Qр)) Sвi , UAH, (19) where Pрi( Qli) – is the function of the crop productivity from the bonitet score of the undisturbed land allocated to i quarry, kg/ha; Pрi(Вр.m) –function of the crop productivity on the reclaimed lands of i quarry from the costs of mining reclamation, kg/ha; Вр.bi(Qр)– function of the total cost of the biological reclamation from the bonitet score of the reclaimed land in i quarry, UAH/ha.
Online since: March 2011
Authors: Peng Cheng Xie, Yu Mei Ding, Gang Gou, Zhen Xing Wen, Wei Min Yang
Introduction
The light guiding plate is an important component of a back light unit that affects the optical efficiency and is mainly used to guide scattered rays to improve the uniformity of brightness of the panel.
Surface treatment must be carried out for special screw of light guiding pate because of PC with high viscosity, corrosion and temperature-sensitive properties.
In our past research [3], results showed Nickel-tungsten alloy plating and TiAlN coating were effective to improve the stripping properties.
Results showed that conventional electroplating hard chromium could improve the stripping performance a little compared to uncoated mold steel, and coatings of TiN and Nickel-tungsten alloy significantly ameliorated the stripping properties between the coatings and PC, which accorded with our former work.
Results revealed that TiN and TiAlN or similar coatings by PVD were effective to improve the stripping properties.
Surface treatment must be carried out for special screw of light guiding pate because of PC with high viscosity, corrosion and temperature-sensitive properties.
In our past research [3], results showed Nickel-tungsten alloy plating and TiAlN coating were effective to improve the stripping properties.
Results showed that conventional electroplating hard chromium could improve the stripping performance a little compared to uncoated mold steel, and coatings of TiN and Nickel-tungsten alloy significantly ameliorated the stripping properties between the coatings and PC, which accorded with our former work.
Results revealed that TiN and TiAlN or similar coatings by PVD were effective to improve the stripping properties.
Online since: July 2011
Authors: Zheng Liu, Xiao Mei Liu
Effect of La on Solute Segregation during Solidification of Al2O3·SiO2f/A356 Alloy Composite
Zheng Liua, Xiaomei Liub
Faculty of Mechanical and Electronic Engineering, Jiangxi University of Science and Technology, Ganzhou 341000, China
aliukk66@163.com, bliuxm66@163.com
Keywords: composite, La, A356 alloy, solute segregation, aluminosilicate short fiber
Abstract.
The solute richening occurred around reinforcement is also a main factor to promote the interface reaction during the solidification.
The solute segregation produced in the matrix will affect the final microstructures, moreover affect the using properties of the composite.
The solute richening occurred around reinforcement is also a main factor to promote the interface reaction during the solidification.
The solute segregation produced in the matrix will affect the final microstructures, moreover affect the using properties of the composite.
Online since: January 2015
Authors: Andrey Badanin, Victor Melnikov, Darya Filippova
Described in the sources of calculation methods, allow us to investigate the bearing capacity of piles, depending on the material pile [1 - 14], driving depth [1, 4, 5, 15, 16], and the physical and mechanical properties of soils [4, 7, 8, 15, 21, 22].
However the analysis shows that presented in these studies, depending modified variants of standard documents, therefore, no major changes to the existing methods are not followed and the end result of the analytical calculation of the bearing capacity of piles remained unchanged: in SP 24.13330 [25] for the calculation of the bearing capacity of a formula: (1) where γс – pile–soil interaction factor; R – design resistance under the lower end of the pile; A – cross-sectional area of the pile; u – cross-sectional perimeter of the pile; fi – design resistance of the i-th layer of foundation soil on the side of the pile; hi – the thickness of the i-th soil layer; γcR,γcf – coefficient of the conditions of work.
But here, just changed the methodology of selection of equipment for piling and calculate its efficiency, which only indirectly affect the actual bearing capacity of piles.
How the technology of piling work can affect the actual bearing capacity of piles?
However the analysis shows that presented in these studies, depending modified variants of standard documents, therefore, no major changes to the existing methods are not followed and the end result of the analytical calculation of the bearing capacity of piles remained unchanged: in SP 24.13330 [25] for the calculation of the bearing capacity of a formula: (1) where γс – pile–soil interaction factor; R – design resistance under the lower end of the pile; A – cross-sectional area of the pile; u – cross-sectional perimeter of the pile; fi – design resistance of the i-th layer of foundation soil on the side of the pile; hi – the thickness of the i-th soil layer; γcR,γcf – coefficient of the conditions of work.
But here, just changed the methodology of selection of equipment for piling and calculate its efficiency, which only indirectly affect the actual bearing capacity of piles.
How the technology of piling work can affect the actual bearing capacity of piles?
Online since: August 2021
Authors: Nabin Baran Manik, Pallab Kumar Das, Sudipta Sen
Various promising properties such as good stability and flexibility, desirable optical properties, high carrier mobility, tunable conductivity, etc. of SWCNT exhibit that it is a potential material for organic devices.
SWCNT is one-dimensional allotrope of carbon and it has excellent mechanical, electronic and optical properties [19].
Rakhshani, Heterojunction properties of electrodeposited CdTe/CdS solar cells, J.Appl.
Farooq, Electrical and Interfacial Properties of p-Si/P3HT Organic-on-Inorganic Junction Barrier, Acta Physica Polonica A. 120 (2011) 558-562
Manik, Effect of back electrode on photovoltaic properties of crystal-violet-dye-doped solid- state thin film, Ionics. 14 (2008) 427-432.
SWCNT is one-dimensional allotrope of carbon and it has excellent mechanical, electronic and optical properties [19].
Rakhshani, Heterojunction properties of electrodeposited CdTe/CdS solar cells, J.Appl.
Farooq, Electrical and Interfacial Properties of p-Si/P3HT Organic-on-Inorganic Junction Barrier, Acta Physica Polonica A. 120 (2011) 558-562
Manik, Effect of back electrode on photovoltaic properties of crystal-violet-dye-doped solid- state thin film, Ionics. 14 (2008) 427-432.
Online since: February 2023
Authors: Blessie A. Basilia, Rhaye Stephen B. Sosa, Davison T. Baldos
However, 4D printing is still in the early stage and there are a lot of challenges like enhancing mechanical properties, biocompatibility, limited kind of SMPs, high cost of 4D printing system, and many more that needs to be addressed before a viable product can be produced.
Low viscosity, tweakable mechanical property and low critical energy which translates to faster curing are some of the material property advantages of acrylate and acrylate-based resin [31,32].
Gelation is a conversion process and is an important factor that needs be addressed since it will directly affect the flow of the uncured resin and the final geometry of the printed material [30,33].
Since it forms the bulk of the resin, it is expected that the properties and characteristics of the monomer would be inherited by the final product.
This method is cost effective, non-destructive and yields rich insights regarding the mechanical property and curing of just-printed materials [74].
Low viscosity, tweakable mechanical property and low critical energy which translates to faster curing are some of the material property advantages of acrylate and acrylate-based resin [31,32].
Gelation is a conversion process and is an important factor that needs be addressed since it will directly affect the flow of the uncured resin and the final geometry of the printed material [30,33].
Since it forms the bulk of the resin, it is expected that the properties and characteristics of the monomer would be inherited by the final product.
This method is cost effective, non-destructive and yields rich insights regarding the mechanical property and curing of just-printed materials [74].
Online since: March 2012
Authors: Sulaiman Hussaini, Gregory Lahrman
The complexity arises due to factors like: large product mix in the same facility/line, numerous manufacturing steps, product customization, batch processing, multiple levels of subassemblies etc.
These changes and analysis can all be done easily with a few mouse clicks and their affect analyzed without the need to risk the changes in the real world.
In April 2010, The US Food and Drug Administration (FDA) issued its latest revision of the guidance document regarding non clinical engineering tests and the agency made the following recommendation: “...We recommend that you determine the stress-strain response, endurance limit, and post-processing mechanical properties through physical experiments or computational models that simulate stent material properties, manufacturing, and deployment processes...”
This simulation analysis example has shown how easily different scenarios can be tried and how tradeoffs between key process factors can be made in a systematic and informed manner to achieve the desired optimal state.
These changes and analysis can all be done easily with a few mouse clicks and their affect analyzed without the need to risk the changes in the real world.
In April 2010, The US Food and Drug Administration (FDA) issued its latest revision of the guidance document regarding non clinical engineering tests and the agency made the following recommendation: “...We recommend that you determine the stress-strain response, endurance limit, and post-processing mechanical properties through physical experiments or computational models that simulate stent material properties, manufacturing, and deployment processes...”
This simulation analysis example has shown how easily different scenarios can be tried and how tradeoffs between key process factors can be made in a systematic and informed manner to achieve the desired optimal state.
Online since: July 2011
Authors: Shun Xi Wang, Zhe Xin, Ke Peng Zhang, Zhao Jing Li, Feng Yun
Introduction
In the optimization of diesel engine cooling system, the flow and heat transfer of coolant is the main factor directly to affect the cooling efficiency of diesel engine, the heat load of high-temperature components and the machine heat distribution and energy utilization[1].
Three dimensional numerical simulation method - CFD (Computational Fluid Dynamics) has the characteristics of low design cost, short cycle etc, which is an important method to study the properties of engine water jacket[2].
To improve the design of the cylinder part, the cylinder block water jacket cooling effect has been greatly improved compared with the original machine, and the change does not affect the structural strength of the cylinder diesel engine.
[3] Xiumin Yu, Haibo Chen, Haizhen Huang, et al: Chinese Journal of Mechanical Engineering, vol.44(10), (2008), p.162
Three dimensional numerical simulation method - CFD (Computational Fluid Dynamics) has the characteristics of low design cost, short cycle etc, which is an important method to study the properties of engine water jacket[2].
To improve the design of the cylinder part, the cylinder block water jacket cooling effect has been greatly improved compared with the original machine, and the change does not affect the structural strength of the cylinder diesel engine.
[3] Xiumin Yu, Haibo Chen, Haizhen Huang, et al: Chinese Journal of Mechanical Engineering, vol.44(10), (2008), p.162