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Online since: January 2014
Authors: Chavarit Sujaritviriyakul, Nathaphon Tangit, Surachai Dechkunakorn, Niwat Anuwongnukroh
The factors which could affect the loading and unloading characteristics were the difference in alloy composition and the condition of heat treatment.
The NiTi alloy was used as an orthodontic archwire because of its unique properties of super-elasticity and shape memory.
The mechanical properties of the wire were changed by heating to allow the shaping of the archwire.
Reference [1] Kapila S, Sachdeva R: Mechanical properties and clinical applications of orthodontic wires.
Effect of direct electric resistance heat treatment on the mechanical properties of NiTi orthodontic archwire.
Online since: June 2012
Authors: Long Tsai Yao, Pin Chou Chang, Hsien Kuo Cheng
The performance of dissimilar activated tungsten inert gas (A-TIG) welding on the welds morphology, angular distortion, and mechanical properties in dissimilar metal plates were investigated.
The reversed Marangoni convection are considered to the main factors for increasing penetration of A-TIG on dissimilar welds in this study.
According to work by Heiple [8-10], the direction of the fluid flow in molten pool can affect the welds morphology.
Fig. 7 Effect of oxide flux on angular distortion Effects of Oxide Flux on Mechanical properties.
Table 2 presents the mechanical properties of weldments with and without activating fluxes.
Online since: February 2024
Authors: Patrick Ehi Imoisili, Mamookho Elizabeth Makhatha, Tien Chien Jen, Malekgatle Linah Mojapelo
For the transesterification process to be successful, there are affected by multiple factors: the nature of the feedstock composition, the alcohol to oil molar ratio, reaction time, temperature, nature, and amount of catalyst and alcohol [2, 4, 25].
Physicochemical properties of Biodiesel.
Most biofuels have different FFA profiles, which is a quality factor that influences the biofuel's oxidative stability and cold flow properties.
International Journal of Food Properties. 20(6) (2017) 1262-1269
Fuel properties of highly polyunsaturated fatty acid methyl esters: prediction of fuel properties of algal biodiesel., Energy Fuels. 26 (2012) 5265–5273
Online since: August 2015
Authors: Ahmad Kamal Ariffin, Ruslizam Daud, Mohd Afendi, N.A.M. Amin, Azizul Mohamad, T.W. Hong, M.S. Abdul Majid, Eang Pang Ooi
The brittle property of IMCs caused the strong stress concentration effect during the mechanical impacts [2,4-15] and thermal cycles[1,3] The cracks were found to initiate and propagate near the IMC layers.
Past studies in the solder joint failure Many factors are affecting the fracture toughness of solder joint, such as solder joint thickness and crack location related to interface of solder joint.
Alam et al. [4] has showed that the stress intensity factors (SIF) increases with the thickness of solder alloys at the loading rate of 0.8 MPa/s for the crack located at 1μm distance apart from the IMC-solder interface.The size effect on the shear strength of as-reflowed and aged Sn3.0Ag0.5Cu/Cu solder joints was significant revealed by Tian [2].
The finite element (FE) analysis has been conducted using ANSYS Release13.FE model involved three types of materials – copper, lead-free tin-silver-copper SnAgCu and intermetallic compound IMC.Table 1 shows the material properties of solder joints.
Table 1 Material properties for the solder joint modeling Materials Elastic modulus, E (GPa) Poisson ratio, v Intermetallic compound (IMC) 110 0.30 Lead-free SnAgCu (SAC) 43 0.30 Copper (Cu) 129 0.34 In order obtain the visco-plastic material model for the solder alloy, ANAND model has been adopted by developing ANSYS APDL code.The solder joint element type of ANSYS was mesh using the viscoplastic element of ANSYS, 8-noded PLANE 183, which applicable to Anand’s viscosplasticity constant.
Online since: October 2014
Authors: Sorin Iacob Strugaru, Marius Stelian Imbrea, Petru Avram, Corneliu Munteanu, Iulian Cucos, Catalina Axinte, Bogdan Istrate
After a detailed analysis, we considered that materials used in automotive industry properties could be improved if we cover them with thin layers but with high properties.
Experimental The aim of this study is increasing of tribological properties of idlers.
The deposition parameters are variable [3], and influences the quality of the coatings and mechanical properties as well.
Appropriate sensors and design solutions have to be adopted to observe the main affecting parameters of fretting.
Barca., Gears materials analysis in order to establish the mechanical properties, Bulletin of the Pollitechnic Institute of Iasi, Romania., (2010)
Online since: September 2013
Authors: Kok Chong Yong, Ahmad Kifli Che Aziz
The vulcanizate of this compound showed good physical properties, high electrical conductivities and also complied with Malaysia Standard 1097 [1].
The usage of these electrically conductive tire components readily affected the physical properties of tire tread, such as lowering its elasticity, increasing its rolling resistance and also reducing its wet performance.
At the first stage, ENR based masterbatches with different proportions of hybrid electrical conductive fillers and silicas (accordingly to Table 1) were prepared by using an internal mechanical mixing device (fill factor of 0.70, starting temperature 70oC and rotor’s speed 100 rotations per minute.
Test samples of sulfur-vulcanized ENR based compounds showed some tensile properties values (measured accordingly to the Malaysian Standard, MS ISO 37) as summarized in Figs. 1and 2.
Elongation at Break Percentage (EB%) Values versus Hybrid Conductive Fillers Contents Electrical Properties Testing.
Online since: July 2016
Authors: Viboon Saetang, Wisan Charee
Since there is no cutting tool-workpiece contact during the laser machining process, the mechanical stresses likely causing crack and chipping can be neglected.
It is anticipated that this effect can introduce a mechanical shock to push the laser-molten material away from the irradiated region, thus increasing the amount of material removed.
The ANOVA results for theses two responses show in Table 2 and 3, indicating that the change of the three main factors significantly affected the roughness and HAZ (p-value ≤ 0.05), while their interactions were not statistically significant (p-value > 0.05).
Heat-affected zone Heat-affected zone 100 µm 100 µm (a) (b) Fig. 4.
Joshi, Modeling nanosecond pulsed laser ablation: a focus on temperature dependence of material properties, Manuf.
Online since: May 2021
Authors: Shi Dong Zhu, Qiang Liu, An Qing Fu, Xin Yu Wang, Jin Ling Li
Among titanium alloys, TC4 (TI-6Al-4V), a strong α+β titanium alloy, has excellent comprehensive mechanical properties, and can be used for a long time at 400 oC [2].
While titanium alloy OCTG will face acidizing fluid and producing fluid (including H2S, CO2), temperature, pressure and other factors.
Effect of annealing temperature on microstructure and mechanical properties of large diameter TC4 titanium alloy seamless tube[J].
Study on corrosion electrochemical properties of titanium alloy tubes in severe environment[J].
Structure, mechanical and tribological properties of self-toughening TiSiN/Ag multilayer coatings on Ti6Al4V prepared by arc ion plating[J].
Online since: June 2012
Authors: Li Jian Dong, Peng Xing Yi, Yuan Xin Chen
is the design variable, the coefficients are called the effects of the factors.
Fig.1 Geometry of planet carrier and selected design variable Fig.2 Distribution of the design points Fig.3 FE meshing model Fig.4 Boundary conditions The material properties and the boundary condition.
The mechanical properties of the material are given in table 2.
Each load is 7.92MPa (Fig.4.D.E.F) Table 1 Mechanical properties of the material Material Name Young’s Modulus(N/m^2) Poisson’s ratio Density(kg/ m^3) Yield strength(N/m^2) QT700-2 1.69E+11 0.305 7090 4.20E+08 42CrNiMo 2.12E+11 0.28 7850 9.30E+08 Result and discussions Response surface analysis.
Mechanical Optimization Design (Section2)”, Beijing: Metallurgy Industry Press, (1995).
Online since: May 2015
Authors: Yu Zhen Zhao, Yue Hui Wang, Hui Xie, Na Na Xiong, Jian Zhuang Liu
Until now, many strategies have been reported for the synthesis of silver nanowires.[3,4] The most widely used method is polyol reduction method, because it can not only avoid the post-treatment necessary for template assisted method, [5] but also omit the use of hash chemicals applied in other synthesis methods.[6] Several experimental parameters like temperature, reaction time, concentration of the reactant the exotic agents of salts as inhibitors in polyol reduction process are important factors that affect the affect the final products.
This observation enlightens us to consider the affecting factors on the formation of silver nanowires.
Two factors, the reaction rate and oxygen scavenger, have important effects on the formation of silver nanowires.
Synthesis of silver nanostructures with controlled shapes and properties.
Effect of Silver Nanoparticles on the Spectroscopy Properties of [Ru(bpy)3]2+ and Electrolyte Effect.
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