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Online since: March 2014
Authors: Visvaldis Svinka, Ruta Svinka, Ieva Zake-Tiluga
The level of mechanical anisotropy was affected by the initial composition of the slurry and sintering temperature.
Pore shape anisotropy can affect such properties as mechanical strength and thermal conductivity in various directions of the material.
This could imply that the CS is affected not only by the introduced pores, but also by the microstructure of pore walls which is affected by the particle size distribution, composition, and sintering conditions.
These factors should be further examined.
This implies that the level of mechanical anisotropy is affected both by the introduced pores (formed by hydrogen gas) and microstructure of pore walls.
Online since: May 2011
Authors: Gao Feng Quan, Feng Wu, Chuan Jun Guo, Cheng Gang Ding
The study has examined the influence of FSSW (friction stir spot welding) parameters (rotation speed, downward compression and welding period) on mechanical property (shear resistance force) by conducting FSSW experiments on 3mm-thick AZ31 magnesium alloy plates under the orthogonal design.
Microstructure observations show that tiny and even equiaxial grains are formed in WN (Weld nugget zone) and coarse grains with uneven sizes are formed in TMAZ(thermo-mechanically affected zone) and HAZ (Heat affected zone).
This paper describes the experiment and analysis of FSSW for welding of AZ31 magnesium alloy as well as the mechanical property and microstructure of welded joints and obtained optimum welding parameters.
Please refer to Table 2 for factors that influence the experiment index and their levels and this is an orthogonal experiment with three factors, three levels and one index.
Hence, among parameters in this experiment, factor B (welding period) is the major factor deciding the shearing resistance force of joints, factor A (stirring head’s rotation speed) and factor C (downward compression of shaft shoulder) are secondary factors.
Online since: April 2009
Authors: Jerzy Jedlinski
The scale structure, microstructure, morphology and phase composition are indicated as factors strongly affecting its growth mechanism.
Introduction Lifetime of the materials applied at high temperatures in aggressive gaseous atmospheres strongly depends on the properties of the formed reaction product and its compatibility with the substrate in terms of mechanical properties and on the interfacial product-substrate adhesion.
Scale growth mechanism is one of few factors substantially affecting materials properties during high temperature service exposures.
Fig. 1 Commonly used schematic representation of the normalized oxidants distribution profiles across the scale formed during the two-stage-oxidation exposures: typical (after [4, 6]) Factors Affecting the Results Analytical-technique-related factors.
Scale-related factors.
Online since: January 2022
Authors: Yi Du, Yask Kulshreshtha, Jean-Claude Morel, Nelson J.A. Mota, Sudhakar M. Rao, Mark C.M. van Loosdrecht, Henk M. Jonkers, Leon van Paassen, Philip J. Vardon, Aurélie Vissac, Guillaume Habert
In the subsequent sections, the factors affecting water ingress in unstabilised earthen material and its disintegration are summarised and hence used in understanding the response of water ingress in biologically stabilised earthen material.
While these properties are inter-related, the factors affecting are not necessarily the same.
The various factors affecting the microstructural fabric and hydraulic conductivity are illustrated and summarised in Fig.1.
Fig. 1: Factors affecting the microstructure fabric and hydraulic conductivity of unstabilised earthen block.
The potential use of chitosan as a biopolymer additive for enhanced mechanical properties and water resistance of earthen construction.
Online since: January 2007
Authors: Bao Chen Sun, Bo Liao, Ai Ping Liu, Fang Juan Qi, Hua Fu, Zhan Lai Ding
The cohesive strength of the composite and the heat-resistant property of resin matrix were the key factors affected wear loss.
The main factor affecting properties of semi-metallic friction materials is the selection of bonder and reinforced fibers.
The 5 factors, 27 level uniform design method were used to design the match composition.
According to the importance degree affecting the properties, the designed result was showed in table 2-1.
The stainless steel wool has good abrasive resistant performance and can provide the necessary strength, improve mechanical properties and affect frictional stability of friction materials.
Online since: January 2012
Authors: Sheng Hua Lv, Ming Ming Hou, Shui Li Lai
The effect of the main factors on yield of the copolymer was discussed.
Samples were prepared in deuterated dimethyl sulphoxide (DMSO-d6). 3) Test for Ts and Mechanical properties of leather: Ts of leather were measured by Digital Leather Shrinkage Temperature Tester MSW-YD4 before and after tanning.
The improvement of the mechanical properties which listed in Table II is coincident with the increase of Ts and thickness listed in Table I.
The results show that these factors can affect its copolymerization distinctly.
The applied results prove that the copolymer has excellent tanning and retanning properties.
Online since: June 2014
Authors: Li Li Zhang, Chuan Chuan Ma
Concentration of carrier agent The concentration of the carrier agent also affected the powder properties.
The physicochemical properties of spray-dried watermelon powders [J].
Powder properties [J].
Factors influencing flow patterns, temperature fields and consequent drying rates in spray drying [J].
Prediction of final product properties after co-current spray drying [J].
Online since: June 2013
Authors: Noor Zuraida Jusoh, Mansur Ahmad, Ibrahim Azmi
Bamboo is well known as the oldest structural material that posses unique anatomical structure and superior mechanical properties.
Structural applications pay more attention on safety, durability and mechanical properties.
Density also was carried out as the factor that affects the compressive strength of round bamboo.
The mechanical properties of bamboo depend on the orientation and concentration of vascular bundles.
[6] Low, I.M., Che, Z.Y., Latella, B.A., Sim, K.S.: Mechanical and Fracture Properties of Bamboo, Key Engineering Materials Vol. 312 (2006), p. 15-20
Online since: June 2015
Authors: S.T. Selvamani, K. Umanath, K. Palanikumar, P. Vinothkumar, G. Madhu
The mechanical properties and microstructure of FW steel joints were observed. 2.
As the range of individual factor was wide, a central composite rotatable Three-factor, five-level factorial design matrix was selected.
The second-order polynomial equation used to represent the response surface HFDZ is given by: HFDZ=b0+ΣbiXi+ΣbiiXi2+ΣbijXiXj (2) And for three factors, the chosen polynomial could be expressed as: HFDZ =b0+b1(F)+b2(D)+b3(N) +b12(FD)+ b13(FN)+b23(DN) +b11(F2)+b22 (D2) + b33 (N2) (3) Where b0 is the average of the responses, and b1, b2, b3… b33 are regression coefficients that depend on the respective linear, interactive, and squared terms of factors.
Characterization of mechanical properties in AISI 1040 parts welded by friction welding [J].
Developing mathematical models to predict tensile properties of PCGT arc welded Tialloy.
Online since: March 2008
Authors: Yu Jun Zhang, Guang Neng Dong, Jun Hong Mao, You Bai Xie
Molecular Dynamics Studies on the Growth and Structural Properties of Hydrogenated DLC Films Y.J.
The hybridization of carbon atoms greatly affects the properties of hydrogenated DLC films.
Introduction Hydrogenated DLC (Diamond-like carbon) films have superior mechanical, electrical and tribological properties and can be applied as wear resistant and protective coatings on bearings of compressor and expander used in fuel cells.
The leading role of hydrogen atoms while depositing DLC films with super-low frictional coefficients has been believed as a critical factor in literature. [1,2,3] However, the mechanism that affects the frictional coefficient of hydrogenated DLC films has not been disclosed exactly. [4,5,6,7] In general, the structure properties of DLC films greatly affect and determine the frictional properties.
The deposition source and impact energy are two key factors affecting the final frictional properties of hydrogenated DLC films while chemical adsorption can occur under a higher energy impact.
Showing 3311 to 3320 of 26166 items