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Online since: April 2021
Authors: Bin Yu, Jian Jun Zhang, Ji Peng Zhao, Tian Ju Ma
The fatigue life is 50 cycles at working pressure, and the minimum performance factor is 30km.
The mechanical behavior of titanium liner is considered to be isotropic and elastic-plastic.
Each filament wound layer had its own fiber direction as illustrated in Fig. 6 and this direction information was used to determine the material properties of the composite.
This data represents a burst factor of 2.32 to 1.
The performance factor is 35.19km.
Online since: November 2007
Authors: David H. StJohn
The reasons for the increased interest in magnesium are driven by three key factors of importance to governments [5]: petroleum consumption, climate change and urban pollution.
For Automotive manufacturers these factors translate into the need to reduce vehicle weight.
However, cost is a major factor affecting the implementation of magnesium and despite the relatively higher cost of magnesium it has major manufacturing advantages which are related to ease of high pressure die casting large complex parts with thin sections.
• Additionally these projects develop databases of alloys and properties.
The Centre was established in April 2006 and undertakes magnesium research programs on surface properties, durability and mechanical behaviour.
Online since: August 2019
Authors: Perumal Venkatachalam, Balasubramanian Ravisankar, S. Ramesh Kumar, Kondaiah Gudimetla, Smedha Mohanlal, Anil Babu Sankuru
Titanium is a metal with good mechanical properties, corrosion resistant and biocompatibility which makes it have a wide range of applications.
UFG structures have better mechanical properties.
It is clearly shows that the particles are metallurgically bonded, the major factor which affects the densification aided by diffusion is the temperature, pressure and time.
Bauri, Microstructure and Mechanical Properties of Titanium Processed by Spark Plasma Sintering (SPS), Metallogr.
Jayasankar, Microstructural and mechanical properties of Al 7075 alloy processed by Equal Channel Angular Pressing, Mater.
Online since: November 2015
Authors: Xiao Hong Zhou, Lei Zhang, Zhu Zhan
And the mechanical property of the silicone layered with the fabric was also measured.
Nevertheless the polyester fiber has been the structure of micro fiber and its surface is inert, not only causing interface properties of polyester fabric and rubber matrix lowly, but also they affected the polyester fabric as skeleton material mechanical performance.
The properties of silicone rubber are shown in Table 2.
In Table 5, mechanical properties of silicone layered with high-performance polyester fabric processed by the cold plasma treated are increased significantly.
Wei, The composite properties of Atmospheric pressure plasma processing aroma fiber and rubber [J].
Online since: March 2010
Authors: Ying Chun Liang, Qing Shun Bai, Kai Yang, W.Q. Chen
The three-dimensional coupled thermal-mechanical finite element model is adopted to determine the effects of varying depth of cut on cutting temperature considering size effects.
Cutting temperature distributions and heat generation at the tool-chip interface in metal machining have been recognized to be the major factors affecting the tool performance and the workpiece geometry or properties.
The thermo mechanical properties for the workpiece material are given in Table.1.
The global distribution of transient temperature T in a 3D coupled thermo-mechanical Table 1 Thermo mechanical properties of workpiece Material Density ρ (g/cm3) Modulus of elasticity E (GPa) Poisson's ratio Specific heat capacity C (J/g﹒ºC) Thermal conductivity κ (W/m﹒K) Thermal expansion α (µm/m﹒ºC) AL 2024-T6 2.78 73.1 0.33 0.875 121 23.2 analysis, is given by t T CQ z T y T x T ∂ ∂ =+ ∂ ∂ + ∂ ∂ + ∂ ∂ ρ κ &) ( 2 2 2 2 2 2 (2) Where Q& is the rate of specific volumetric heat flux and t the time.
The variations of temperature distributions are consistent with the simulation results. 0.5mm No chips occur Tool Rotation Workpiece v Temperature analysia area 0.5mm Interrupted chip 0.5mm Continuous chip a)ap=1.5µm b) ap=5µm c) ap=20µm Fig. 5 The IR image of temperature distribution considering various depth of cut Conclusions A new coupled thermo-mechanical finite element model was developed for micro-end-milling of aluminum alloy Al2024-T6.
Online since: March 2007
Authors: Enrique Louis, Javier Narciso, Alejandro Rodríguez-Guerrero, F. Rodríguez-Reinoso
The oxide layer that usually covers the surface of liquid aluminum and its alloys, is one of the main factors that hinders infiltration of these alloys into graphite particle compacts.
Introduction Materials with high strength, lightweight, and good thermal properties are required in some automotive components.
Fabrication of Al-C composites by liquid-metal routes are hindered by three well-known facts: i) gasification of carbon, that initiates below the melting temperature of pure aluminum, ii) reaction between Al and carbon to form aluminum carbide, an unstable compound with very poor mechanical and thermal properties, and, iii) poor wettability at the Al/C interface.
Properties for the graphite particles used in this work.
The infiltration rate, however, is scarcely affected.
Online since: December 2012
Authors: Xin Gang Yu, Lin Lin, Hai Ke Huang, Hong Chao Xu, Di Wu
The main factors, influencing the low density light foam concrete, include the selection and dosage of cementitous material and admixture, the volume of foam, water consumption and chemical admixture for concrete.
Because of the high temperature resistant properties of Inorganic heat preservation materials, foam concrete can quickly fascinate the material engineer.
Now, mass of foam concrete research work is focused on the density of 300-1200 kg/m3 , these are limited to the properties of the foam concrete, such as fresh state properties, physical properties, mechanical properties, durability properties [3-9].
Water consumption can determine the workability of the fresh foam concrete and affect the hydration of the binder.
However, with the density decreases, the mechanical strength deceases rapidly.
Online since: August 2013
Authors: Cai Fu Qian, Jia Wei Sun, Yang Liu, Sheng Xian Cao, Da Cheng Wang
Dynamic Simulation and Influencing Factors Analysis of Biofouling Wang Dacheng1a, Qian Caifu1b , Cao Shengxian2, Liu Yang2, Sun Jiawei2 1.College of Mechanical and Electrical Engineering, University of chemical Technoloty , Beijing 100029, China. 2.
The biofouling of tube was an important factor to influence fouling resistance by Fig.6.
Comprehensive Evaluation and Forecast of the Material Surface Properties Affect the Formation of Biofouling[J].
Research Progress of the Metal Nanomaterials Mechanical Properties [J].
Nanocrystalline electrodeposited Ni: microstructure and tensile properties [J].
Online since: January 2014
Authors: Yan Hong Lei
Sewage treatment plant process aeration or mechanical agitation , the sewage in a variety of microorganisms may send out into the air, the form of aerosol form toxic and harmful air pollutants. 2.2 weather’s characteristics of the formation formation factors of haze had three main aspects: one was the increase of the particle suspension, motor vehicle exhaust and smoke exhaust particle size in micron level that stays in the atmosphere; The second was horizontal direction in no wind.
Indirect effect refered that the change of aerosol concentration affected the characteristics of cloud (including optical properties, the cloud cover, cloud, etc.), increased the reflectivity of cloud to solar radiation or made cloud last longer, and even reduced rainfall.
The reaction mechanism was likely to be: oxygen freeed radicals in the lung; chemical factor and cytokine released.
Organic carbon in the haze would seriously affect human health.
The harmful components such as fine particulate matter and ozone identified and monitored , the source of the physical and chemical properties of particle emission diffused reaction and transformed between the various substances in the process of research.
Online since: January 2016
Authors: Andrzej Norbert Wieczorek
The impact of the operational factors was reproduced by filling the test box with quartz abrasive, which resulted in its continuous presence between the chain wheels tested and the chain surface.
The chemical composition of the steels and cast steels (was used the spectroscope FOUNDRY MASTER) subjected to tests was compared in Table 1, while mechanical properties are presented in Table 2.
Mechanical properties of the tested cast steels (data from the certificate of producer) Mechanical Properties Tensile Strength TS, MPa Yield Strength YS, MPa Elongation A5, % GS42CrNiMo4 1115±3.8 905±3.6 8.9±0.1 L20HGSNM 1134±4.0 1083±3.8 10.0±0.1 L30GS 631,8±3.1 396±3.0 17.8±0.1 A6 739±3.8 526±3.4 16.3±0.1- LS5GSM 1152±3.7 891±3.7 8.7±0.1 L20HGSNM A6 L35GSM GS42CrMo4 L30GS Fig. 3.
[8] Wieczorek A.N., The role of operational factors in shaping of wear properties of alloyed Austempered Ductile Iron.
[9] Wieczorek A.N., The role of operational factors in shaping of wear properties of alloyed Austempered Ductile Iron.
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