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Online since: September 2016
Authors: K. Rajkumar, A. Gnanavelbabu, M. Sankar, M. Mariyappan
Composites with nano reinforcements had outclassed their counterparts in terms of the properties shown by the nano composites.
In the present work aluminium matrix has been reinforced with boron carbide and nano graphite which is added as a solid lubricant to improve tribological properties.
From this interaction plot for the overcut, there are two factors affecting the overcut, one being the voltage and other being the electrolyte concentration.
The remaining factors, current and feed rate have negligible effect on the overcut.
BabuRao.Microstructure and mechanical properties of aluminum–fly ash nano composites made by ultrasonic method.journal of Materials and Design 35 (2012) 55–65
Online since: April 2015
Authors: R. Vijayaraj, U. Satheeshwaran, J. Nancy, C. Pugazhendhi Sugumaran, M. Raj Kumar, J. Ganesan, S. Geethadevi, S. Dinesh Kumar, D. Edison Selvaraj
The dielectric strength of cable insulation depends on many factors such as the existence of filler material in the insulation.
The influence of Silicon dioxide (SiO2) filler on the dielectric and mechanical properties of polyvinyl chloride (PVC) cable were analyzed.
From the results, it is shown that the filler material has improved the dielectric and mechanical properties of the cable insulation.
Introduction The Electrical properties are affected by the amount of filler added to the composite.
Conclusions The test results show that the addition of silicon dioxide has an impact on the dielectric and mechanical properties.
Online since: August 2015
Authors: Harini Sosiati, Soekrisno Soekrisno, Henny Pratiwi, Dwi Astuti Wijayanti
Cellulose microfibrils were extracted from kenaf fiber by alkali treatments under various conditions to further characterize their properties and verify the factors which induce fiber degradation.
To further characterize the properties of natural fibers and verify the factors which lead to fiber degradation, alkali treatments between 6 and 9% NaOH under various conditions were applied to kenaf bast fibers.
Conclusion We have successfully verified that except at high concentration of alkali (> 6% NaOH), the alkalization method adopted is a very important factor in affecting the quality of fiber.
Widyorini and Soekrisno, Properties of the treated kenaf/polypropylene (PP) composites, Adv.
Goda, Effects of heat and alkali treatments on mechanical properties of kenaf fibers, Proc. of 16th Int.
Online since: September 2013
Authors: Jong Deok Kim, Young Moo Heo, Si Tae Won
Eco-Al is the new material which is replaced Mg of aluminum alloy with Mg+Al2Ca, therefore Eco-Al material has improved mechanical properties and formability.
The clearance between the punch and die of a fine blanking tool is an important design factor that affects the sheared surface of a product.
Especially, researches on weight reduction of automobiles wherein strength of components and functional factors are satisfied while weight is decreased are very active.
Table 1 shows its mechanical properties.
Lee, Microstructure and Mechanical Properties of Eco-2024-T3 aluminum alloy, Advanced Materials Research Vols. 602-604 (2013) p. 623-626 [2] W.
Online since: January 2005
Authors: Cheng Bao Jiang, Hui Bin Xu, Jian Qin Mao, Hai Shan Ding, Hu Zhang
The technique proposed could be served as a reliable tool for cobalt-free maraging steel mechanical properties control and design.
In this paper, the authors propose a fuzzy identification for cobalt-free maraging steel mechanical properties modeling.
The influencing factors include chemical composition and heat treatment processing parameters.
The reason is that ductility-related parameters are more easily affected by experimental factors, such as tensile speed, specimen condition and dimension.
The influence of solution temperature on the mechanical properties of the steel is predicted and plotted in Fig.2.
Online since: November 2018
Authors: Hamimah Abdul Rahman, Shahrin Hisham Amirnordin, Mohd Hafiz Mohd Ali, Najeed Ahmed Khan
One of the driving factors for the usage of filler in FR additives, such as the application of calcium carbonate in the modification of polypropylene (PP), was cost reduction.
In addition, fly ash successfully enhanced the mechanical properties [24].
The addition of 25 wt% fly ash shows similar mechanical properties to that of 10 wt% glass fibre.
Even a small amount of nanofillers, such as clay, can improve mechanical, thermal and electrical properties of plastics without affecting its processability.
The global market consumption revealed that trends now are shifting towards eco-friendly FR due to the regulation imposed by authority, environment, safety and health factors.
Online since: July 2014
Authors: Xiao Han Yao, Bin Tao, Jin Hong Ma
The corrugated waist rail has been successfully rolled in the Mill Research Institute of Yanshan University.Based on commercial FE software of DEFORM-3D, the recrystallization in the rolling process of corrugated waist rail was simulated, the factors affect the recrystallization are analyzed.
The different reduces and rolling speed that affect the recrystallization are also analyzed.
It has been already tested that the mechanical properties of this kind of special structure rail are better than those of the ordinary structure rail.
The dynamic properties are also improved[3][4].
China mechanical engineering,2005,16(12):1103-1106 [2]WU Bo, CHANG Fuqing, ZHANG Wenzhi.
Online since: December 2009
Authors: Hassan Farhangi, A. Karimian, A. Amari Allahyari
These phases are known to degrade the mechanical and corrosion properties of the weld metal [4].
However, the formation of these phases is influenced by a number of factors such as weld metal composition, ferrite content and its morphology, in addition to temperature and time of transformation [4].
The mechanical properties of δ-ferrite containing weld metals are generally controlled by the kinetics of δ-ferrite dissolution, as well as the nature of transformation products [7].
Therefore, transformation kinetics and its subsequent effects on mechanical properties has been the subject of many studies [5-8].
Tensile Properties.
Online since: August 2020
Authors: Sergiy Azarov, Sergiy Yeremenko, Roman Shevchenko, Stanislav Shcherbak, Viktor Mashkov
In this case, the criterion parameters of the deformation and strength of structural materials are such standard characteristics of the mechanical properties of the material as elastic modulus E, yield strength σт and tensile strength σв.
(1) As the basic characteristics of the mechanical properties, the yield strength sT, the tensile strength sB, the endurance limit витривалості s-1, the long-term strength sls, the tensile strength Sк, the ultimate ductility yк, the critical stress intensity factors KIc and KIec deformations are used: (2) Derivatives of mechanical properties, structural forms and loading conditions are such material characteristics as long-term ductility yкt,, effective stress concentration factors Ks, sensitivity to absolute sizes es and cycle asymmetry ys, coefficient of variation us, crack growth rate dl/dN in the number of cycles and dN/dt in time, sensitivity to the external environment bс.
In some cases, to establish the distribution curves of the basic characteristics of the mechanical properties sB, yк, s-1, sls, tests were carried out from 10 to 2000 samples in one of the load conditions.
This crack growth is determined by their velocities dl/dN, dl/dt, which in turn depend on the magnitude of the stress intensity factors DKI or deformations DKIe.
and their dose loads affecting people and other objects of the biosphere: R3 – the probability that these levels of fields and loads will lead to certain damage.
Online since: May 2012
Authors: Wei Dong Cao
So, the main objective of the study is to evaluate the properties of asphalt binders modified by CR and PPA.
A penetration grading (Pen) of 70 asphalt binder was used and the basic properties are shown in Table 1.
The orthogonal diagram of the four factors and three levels are shown in Table 2.
The relationship curves between conventional indexes and affecting factors are shown in Fig.1.
Fig.1 Relationship curves between conventional indexes and affecting factors It is observed from Fig.1 that the softening point values of composite modified asphalt binders decrease first then increase with the decrease of crumb rubber size (increasing in mesh number).
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