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Online since: October 2017
Authors: Ashish Goyal, Anand Pandey, Pooja Sharma
Introduction Machining of aerospace materials is a challenging task due to its inherent properties viz. high strength and hardness which increases its cost of shaping [1-2].
Table 2 represents the various control factors and their levels.
The increased rate of material removal is due to the change in wire electrode properties, which reduces the wear and increass the sparking effeciency during WEDM.
Fig. 2 Residual plots for MRR Experimental Validations In present case, confirmation experiment was required because optimal solution for factors and their levels are not matched with experiments of OA experiments (L18).
The pulse on time and tool electrode are the most siginficant parametes affecting MRR.
Online since: April 2019
Authors: Inta Kirilovica, Inta Vitina, Margarita Karpe, Viktorija Sucevana
The concentration of nitrates (NO3- = 10 mg/L) is insignificant and should not affect the material.
Still, there are some other factors that can affect the corrosion process.
Despite its wide application in construction, Portland cement is not suitable for restoration due to its high density and incompatible chemical, mineralogical and physical properties.
A limited addition of Portland cement provides mechanical strength and hydraulic properties.
Alvarez, Pore structure and mechanical properties of cement-lime mortars, Cement.
Online since: July 2011
Authors: Yuan Yi Guo, Feng Mei Sun, Chang Jiang Song, Liang Zhu, Ke Feng Li, Qi Jie Zhai
Introduction Ferritic stainless steels possess good corrosion resistance and properties at high temperature.
For the ferritic stainless steels, alloying elements Nb and Ti can be added to improve the mechanical properties through solution strengthing and precipitation strengthing, and also to eliminate the sensitization (i.e. susceptibility to intergranular corrosion)[3-4].
This phenomenon results in a coarsened grain zone which can not be refined because of the untransformable microstructure, which cause high temperature embrittlement and deterioration of mechanical properties[3,7].
To solve this problem and improve the mechanical properties of welding HAZ, it is important to have an insight into the grain growth behaviour at high temperature.
Moreover, alloying element Ti should be another factor which leads to higher grain initial rapid growth temperature.
Online since: January 2011
Authors: Yong Li Xu, Pei Feng Cheng, Guo Feng Liu, Ming Chen Lei
The performance of the mixture at low temperature was one of the most important factors to be considered to ensure its application in cold areas.
If increase the content of asphalt mixture, flexibility of the mixture rises and then show the same properties with hot mix asphalt (HMA).
Grading evaluation of recycling asphalt mixture Waste asphalt pavement can be recycled, but its performance is affected by factors of old milled material performance, the correct gradation designing and construction quality control.
The mixture milled need to be classified piled, evaluation content is mainly gradation , mechanical properties (crush value,acicular content), etc.
We can see that there are no significant difference for main properties between the three, and they all meet the requirements of the asphalt mixture lower layer, the emulsified asphalt milled mixture has the highest low-temperature bending tensile strain,but conventional asphalt mixture’s high temperature properties is best.
Online since: May 2016
Authors: Cong Ling Zhu, S. Li, J. Xu, C.H. Zhu
To design rubber dampers requires designers to know their characteristics very well, among which, static and dynamic behavior and characteristics are the key factors.
The technological level, production scale and product variety of rubber damper industry are dependent on users who often develop products that have similar shape but totally wrong structure or material properties as a result of insufficient knowledge.
He, Mechanical Property of Polymer, University of Science and Technology of China Press, Beijing, 2008
Lin, Vehicle System Dynamics, Mechanical Industry Press.
Lin, Vehicle system dynamics, Mechanical Industry Press, Beijing, 2005
Online since: November 2013
Authors: Ruo Chong Yang, Kai Li, Ji Peng Zhu, Shu Kai Ya, Dong Zheng
Results and Discussion Mechanical Properties.
Different dosages of rubber powder volume may play a major impact on mechanical properties.
And the mechanical properties appeared a declining trend with the increase of rubber content.
Study on Gradation Composition Design of Cement-stabilized Macadam Considering Shrinkage Deformation Factors [J].
Research on the Physico-mechanical Properties and Durability of Crumb Rubber-modified Concrete[D].
Online since: April 2012
Authors: Khaled Hamouda, Tahar Sayah, Mohamed Nadjib Benallal, Anatoly P. Babichev, Djamel Saidi, Mohamed Amine Djema
This paper presents the results of vibro-mechanical treatment research, its influence on treated surface quality and working ability of the samples contact surface made by hardened steel ShKh-15, the nickel steel 40HNS2MA and bronze alloy BROF7-0,2.
Also the process conditions are summarized by: modes of vibration, characteristic of the process, coating technology and mechanical properties of the specimen.
The principle of the process depends on the properties of the work-piece, which is affected by the environment and mechanical behavior, or mechanical operation by the smallest particles, smoothing of its micro-roughness and plastic deformation of a superficial layer.
Babichev as a priority in study and is given by [1]: Vi,2 − (Ky0Vi,1)= (1+ Ky0 )A0ω cos(ωt), (1) Where: Vi,1, Vi,2 are the speeds of elements at layer i before impact in i+1 pair layers; the restoration factor Ky at impact of the first layer at the bottom of the working chamber; A0 represents the first layer amplitude of fluctuations; and ω is the frequency at fluctuations of the bottom of the working chamber.
In terms of oil friction the result is as well as in the previous series of tests associated with good oil-retaining properties of the surface after treatment in an abrasive environment.
Online since: December 2010
Authors: Chang Qing Fang, Jing Bo Hu, Ying Zhang, Rui En Yu, Min Zhang
Resulting from the dual function of mechanical washing and surfactant, ink can be removed successfully.
Han Fu and his group selected domestic waste newspaper as object and researched 9 factors which affect deinking effect, including pulp content, repulping time, composite deinking agent, mass fraction of deinking agent, curing time, curing temperature, flotation concentration, flotation temperature and flotation time, optimizing the deinking technological condition, establishing a clear process which has an excellent deinking effect and reducing the cost, also the paper has high whiteness and yield rate [11].
Flotation cell is the core equipment of deinking production, so a large number of researches are about improving the structure and property of flotation cell.
Deinking agent should have properties[13]: (1) Contributes to easing and deinking waste paper, does not produce the re-adsorption after deinking and helps to remove the separated ink. (2) Reduces the carbon content of waste paper pulp, improves whiteness, removes carbon particle successfully along with bubbles during flotation decontamination. (3) Does not affect pulp yield rate and mechanical adaptability, plays a good role in wastewater treatment.
Secondary fiber is the dominant factor which affects deinking performance of waste paper recycling; therefore, it should be given full attention to produce high quality deinking agents and choose a suitable deinking technology [16].
Online since: September 2021
Authors: Alexander S. Samardak, Evgeniy Papynov, Alexey Ognev, Vladimir Pechnikov
The cumulative effect of these factors has a direct impact on the physicochemical characteristics of the sintered materials.
So, for example, in the case of the synthesis of magnetic materials, the change in their composition and structure, which easily occurs during heat treatment, is a critical factor determining their magnetic properties [23, 24] In addition, additional superposition of the electromagnetic field can affect the anisotropy of the system, setting the ordering of the magnetization during sintering.
Effect of SPS process sintering on the microstructure and mechanical properties of nanocrystalline TiC for tools application.
Magnetic properties of hard (CoFe2O4)-soft (Fe3O4) composite ceramics.
Influence of Crystallite Size on the Magnetic Properties of Acicular γ‐Fe2O3Particles.
Online since: November 2012
Authors: Mohd Rizal Alkahari, Mohd Sanusi Abdul Aziz, Tatsuaki Furumoto, Ryutaro Tanaka, Akira Hosokawa, Takashi Ueda
One of the important properties in SLM is thermal conductivity of metal powder.
The part is a consolidated material where its mechanical properties and appearance are influenced by powder materials and fabrication parameters.
Thermal conductivity is important thermophysical properties for various design applications.
Therefore, in this paper, the thermal conductivity of metal powder and consolidated material and also factors that affects them are discussed.
[9] L.Taylor, Metals Handbook 1: Properties and Selection of Metals, 8th ed., American Society for Metals, Metals Park, Ohio, 1961.
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