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Online since: December 2011
Authors: Jin Yong Xu, Ya Juan Liu, Cheng Gao, Jing Chun Zhang, Yong Yong Deng
Introdution Source cathode composition design in multi-element surface alloying by double glow plasma technique is the key factor to determine the composition of surface alloying.
The surface properties can be greatly improved by Cr, Mo.
Based on all of the factors above, source cathode only added the element Cr, Mo without V, Si.
According to Fick’s law, the solid alloying process is affected not only by temperature and time, but also by the solute concentration.
Because CrO3 has better thermal stable than MoO3.These characters affected Cr ion sputtering to some extent
Online since: November 2012
Authors: Yun Yun Zhu, Kai Xiang Cao, Lun Zhang
Dynamical system modeling Through variable screening, the parameters that mainly affect vehicle following behavior are speed difference, vehicle distance and speed of the preceding car [6].
Road condition is good, adhesion is large enough, and the nonlinear factor of tire slippage is ignored. 3.
From the process of modeling above, established vehicle longitudinal dynamic system model can meet the requirements of simplicity, and can be realized with common vehicle technical data and a common software platform, and it also reflects the longitudinal dynamics properties of the actual vehicle system.
Because driving behavior is easy to be affected by human factors and traffic environment, the collaborative study of human - vehicle - road closed loop system has been one of the key research direction of ITS.
[3] Guanguli A, Rajamali R: Proceedings of the Institution of Mechanical Engineers.
Online since: September 2014
Authors: Hui Ming Tan, Yu Feng Gao, Hao Zhang
Chen[4] and Gao[5] used 2D numerical finite element method to investigate soil arch effect behind covered sheet pile to verify soil arch effect and the effect of pile spacing, pile size and soil property on soil arch effect.
The factors affecting the effect of covered pile are: the covered result increases with spacing between the covered piles decreases, with the covered pile cross-section size increases.
The mechanical analysis for covered type of sheet pile wharf and determination of rational pile spacing.
Online since: February 2012
Authors: Falah Abu, Mansur Ahmad
Some cases reported were due to mechanical jointing failure with improper screw insertion.
Unlike solid wood, wood based composites material failure and fracture properties are not getting the necessary attention by researcher.
The mechanical properties were determined initially and have met the Type P2 requirement based on European Standard EN 320 [9].
Mode 6 damages occurred due to two factors.
The presence of the failure would not affect the particleboard appearance.
Online since: October 2008
Authors: Lan Cai, Hui Xia Liu, Xiao Wang, H. Yan, C. Liang, B. Wu
Cai1 1 School of Mechanical Engineering, Jiangsu University, Zhenjiang 212013, China a wx@ujs.edu.cn Keywords: Burr, Cutting-direction, Orthogonal cutting, Finite element method, Simulation Abstract.
The objective of this study is to investigate the factors that affect the burr formation to provide a further understanding of its mechanism using finite element method.
The rate of heat generated due to friction is given by the formula: ζrfrvFQ =& (3) where frF is the friction force, rv is the relative sliding velocity between tool and chip, and ζ is the mechanical equivalent of heat.
This is because of the difference in the properties of the workpiece material.
Weizheng: Proceeding of International Conference on Mechanical Engineering and Mechanics (Nanjing, China, 2005).
Online since: March 2010
Authors: Xue Mei Liu, Zeng Da Zou, Shi Yao Qu, Xin Hong Wang
With the development of friction surfacing, it is necessary to obtain a thorough understanding of friction surfacing, such as the sophisticated thermo-mechanical behaviors, because they are the inner factors that determine whether the process could be complemented successfully, which affects the coating's quality.
In this paper, the finite element method was employed to study the coating rod's thermo-mechanical behaviors.
Thermo-Mechanical Process Analysis The whole friction surfacing process is divided into two sequential phases: the preliminary friction preheating phase and the next steady surfacing phase.
In this coupled thermo-mechanical problem, the temperature filed analysis is a matter of unsteady heat exchange with inner heat source.
The fundamental equation of the heat condition with changeable thermal properties can be expressed as the following 3-D, unsteady equation: 2 2 2 2 1 T T T T c k q t r r r z ρ   ∂ ∂ ∂ ∂ = + + +   ∂ ∂ ∂ ∂   & (1) Whereρ,c and k are density, specific heat, and thermal conductivity of the coating rod material, respectively,q& is the internal energy rate.
Online since: July 2011
Authors: Da Gui Huang, Wen Jie Wu, Zheng Dong
As a new diagnostic method, the research of the diagnostic accuracy, effectiveness and influencing factors of SVM is not enough [6].
To facilitate the diagnosis and the diagnostic accuracy of the factors affecting the comparison, as shown in Table 1 using 8 kinds of failure modes (M5 ~ M0, MV, and B1) constitute a JT9D engine failure sample, as the training samples; the same time Two nearly complete collection of relevant samples of TA40 and CL16 failure measured by superimposed noise is used as a validation of tested samples.
The failure of the samples in Table 1, the variance with the very poor law and standardized methods such as normalized, standardized way to examine the samples and correlation to the classification rate and the diagnostic accuracy of affect.
This shows that the normalized range method can change some of the samples of fully related to the distance between two properties, it is very close to almost merge, which is contributing to the hyperplane distance intervals and the classification based on SVM, not the two distinguish the fault into the same category as the main reason.
Mechanical Science and Technology, 2008, 22(2): 213-220
Online since: August 2024
Authors: Sarum Boonmee, Natchanon Kallaya, Kittirat Worakhut, Worachot Boonyarit, Nidchanan Wanmai, Kandit Amatachaya
Gray iron, a widely used engineering material, is favored for its desirable properties such as good damping capacity, thermal conductivity, and corrosion resistance.
The presence of graphite flake in the microstructure provides several desirable properties such as good damping capacity and thermal conductivity [1-2].
This affects the durability and functionality (thermal and surface) of gray irons.
Additionally, dendritic structures, identified as type-D graphite and typically undesirable for mechanical properties, were observed at 2.89% carbon and 4.56% silicon.
For cast iron cookwares, where heat resistance is more critical than mechanical properties, the presence of type-D graphite may be tolerable.
Online since: October 2023
Authors: Sunanta Chuayprakong, Rungsima Yeetsorn
Role of ratio between polymeric materials in physical, mechanical, thermal and weather resistant properties of the prepared films was elucidated.
The easy wrap film might be potentially one of the vital factors for Bio-Circular-Green Economic (BCG) Model which has been introduced and promoted around the world including Thailand.
Therefore, formula, properties and cost can be proposed to be the easy wrap film for item protection from dust and moisture. 4.
Sirivat, Effects of Foaming Agents and Calcium Carbonate on Thermo-Mechanical Properties of Natural Rubber Foams Polimeri, 35 (2014) 10-17
Kamaci, Effect of flow rate on wetting and optical properties of electrospun poly(vinyl acetate) micro-fibers.
Online since: May 2024
Authors: Ali K. Kadhim
It is well known that the addition of certain amount the third element into alloys (boron) can markedly improve the mechanical properties e.g ductility [6-8].
Additionally, the FeAl alloys together with with Ga or B can help clarify the connection between magnetic and mechanical properties.
This complexity arises from two principal factors.
This is valuable for alloy design and understanding how an alloy's composition affects its properties [28,29].
This can impact their mechanical and thermal properties.
Showing 20961 to 20970 of 25974 items