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Online since: February 2015
Authors: Sivakumar Ramakrishan, Shah Rizal Kasim, Nor Firdaus Muhamad
Design of experiment (DOE) is an optimization method used to identify significant influencing factors of experimental processes and model factors and responses with a minimal number of experiments.
XRD analysis (Bruker D8), FESEM (Supra 35VP) and hardness test (Vickers Hardness) were also conducted in order to evaluate the properties of BCP biocomposite.
Part III is outlines the role of DOE where two level (2k) factorial methods was employed to determine the effective or significant factors (factors that affecting the process and output) were determined through regression model.
Other characterization such as phase changes, mechanical properties and morphology will be observed.
Mechanical properties of α-TCP phase are lower compare to HA and β-TCP phases [7].
Online since: April 2004
Authors: Ai Kah Soh, Xiu Xi Wang, Z.H. Sun, Heng An Wu
China Keywords: Molecular dynamics simulation, Metal nanowire, Mechanical property, Strength, Fracture, Size effect, Strain rate ABSTRACT Numerical simulations have been carried out to determine the mechanical property of single crystal copper nanowire subjected to tension using the molecular dynamics method.
However, when the strain rate is sufficiently high, amorphization is a dominant factor of plastic deformation and super-plasticity is found.
With molecular dynamics techniques, many atomistic simulations on mechanical behaviors of metal nanowire, such as structure and stability [3-4], deformation and fracture [5-11], elastic properties [12-14] have been performed in the recent past.
It is worth noting that in the case of experimental study, the results can be affected by a number of factors simultaneously, Whereas, in the case of molecular dynamics simulation, the direct effects of strains due to heat dissipation and the concomitant temperature increase at various strain rates can be isolated by controlling the temperature (keeping the temperature constant) and the strain rate.
The high strain rate does not only affect the yield stress of nanowire, but also the deformation mechanism after yielding.
Online since: June 2008
Authors: Kin Tak Lau, Mo Lin Chan, Mei Po Ho, Tsun Tat Wong, Yan Shang Yin
It is believed that the use of this material to form composites is able to enhance the mechanical, thermal and electrical properties of Polyurethane (PU), Polyester (PE) and Epoxy.
In spite of the fact that aforementioned methods were used to produce better dispersion nanoclay/polymer composites, and enhance the bonding between the nanoclay platelets and surrounding matrix through the reduction of viscosity of the resin by increasing the temperauture at the early stage, some procedures that may seriously affect the properties of resultant composites.
Conditions of all samples for the test Materials and Mechanical Properties To investigate the homogeneity of all the samples subjected to different manufacturing processes, fractographic observation through the use of Scanning Electron Microscopy (SEM) was conducted.
The results are agreed with our previous study that the mechanical and material properties of nanoclay/epoxy composites would drop if the amount of nanoclay excesses their optimal value.
Wang J., Qin S., Studty on the thermal and mechanical properties of epoxy-nanoclay composites: The effect of ultrasonic stirring time, Materials Letters 2007: 61:4222-4224 2.
Online since: December 2014
Authors: Tian Fei Ma, Xin Fu Wang, Liang Zhao
The thermal shock resistance of refractories mainly depends on the material mechanical properties and thermal properties, related to the refractory products also and component geometry, the environment medium heating mode, and many other factors, it is the comprehensive reflection of the above factors.
Through the analysis of refractory thermal shock theories, discusses the material factors affecting the thermal shock parameters, provides the reference for the design and fabrication of refractories with good thermal shock resistance.
The following are discussing the factors influencing thermal properties and mechanical properties and the ways of improving the thermal shock resistance of refractories.
Factors Affecting the Thermal Properties of Refractories Generally speaking, the thermal properties of refractories mainly relate to material composition.
Factors Affecting the Mechanical Properties of Refractories Refractories have many holes and defects in microstructure level, which have great influence on the mechanical properties of refractories.
Online since: March 2014
Authors: Qi Song Li, Hai Bin Sun, Yu Jun Zhang
China asunhaibin111@163.com, byujunzhangcn@sdu.edu.cn(corresponding author), clqs51688@163.com Keywords: B4C/SiC, Reaction sintering, Mechanical properties Abstract.
The influence of B4C content, species and content of carbon, sintering temperature on the mechanical properties of B4C/SiC composite ceramic were studied.
The physical and mechanical properties of the composite ceramic such as density, bending strength, fracture toughness were investigated.
We can conclude that the main factors affecting reaction rate are dissolution rate of carbon atoms and precipitation rate of crystalline SiC.
Effect of fiber type on mechanical properties of short carbon fiber reinforced B4C composites, Ceramics International. 35 (2009) 1461–1466
Online since: September 2017
Authors: V.V. Lepov, Susanna N. Makharova, M.S. Bisong
The structural analysis revealed the differences in mechanical properties conditioned by phase distribution and carbon content in weld, heat affected zone and base metal.
In case of weld and low-cycling of steel St3ps it has Inhomogeneity in mechanical properties and phase.
So it is difficult to explain the mechanical properties from structure and therefore necessary to find another way.
The mechanical properties and structure evaluation after the weld and low-cycle loading is significant also.
The structural research revealed the differences in mechanical properties conditioned by phase distribution and carbon content in weld, heat affected zone and base metal.
Online since: May 2016
Authors: J.L. Wang, W.W. Song, D.L. Shao, Dun Wen Zuo, H.F. Wang, Q.Q. Zhu
Analysis on the friction and wear properties of friction stir jointing for 7022 aluminum alloy joining region H.
Zhu1 1College of Mechanical and Electrical Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China 2School of Mechanical Electronic & Information Engineering, Huangshan University, Huangshan 245041, China; awanghnfeng@163.com Keywords: Friction stir jointing; Friction and wear; 7022 aluminum alloy; Solar support and solar cell frame; Friction coefficient and wear capacity Abstract: The friction and wear properties of the friction stir jointing 7022 aluminum alloy joining region were tested in this paper.
Due to the random factors influence in friction process, the law of the friction coefficient reflecting friction and wear was not the same with the law of wear volume reflecting friction and wear.
Contrasting the hardness and the wear volume of jointing area, can be found that the hardness was one of the important factors affecting the friction and wear performance.
Due to the effect of random factors in the process of friction, the friction coefficient reflection the law of the friction and wear was not agree with wear volume reflection the law
Online since: December 2012
Authors: Zhuo Li, Jiu Xin Jiang, Yan Ping Wei, Ming Yan, Yan Lin Chen, Ying Chang
The effect of compositions on the combustion behavior and the product was studied and the results showed that the amount of Al in the starting powder was the key factor affecting the combustion behavior, the phase assemblages and the morphology of products.
Introduction Aluminium nitride (AlN) has recently become an attractive material due to its good properties, e.g., electrical resistivity, high thermal conductivity, thermal shock resistance and mechanical strength.[1,2] Its high thermal conductivity and high electrical resistivity are the dominating reasons for the use as packaging and substrate material in electrical devices and as insulators in high performance spark plugs.[3] Silicon carbide (SiC) has a coordinating thermal conductivity with AlN and is a more attractive material with regards to its mechanical properties.
References [1] Prochaska GW, Miller GR, Alminium nitride: a review of the knowledge base for physical property development.
[7] Li J, Watanabe R, Preparation and mechanical properties of SiC-AlN ceramic alloy.
[13] Zhang DL, Progressing of advanced materials using high-energy mechanical milling.
Online since: May 2020
Authors: Chun Feng, Li Juan Zhu, Ya Cong Song, Hong Jiang Ge, Ya Qiong Cao
The influence of alloy elements, defects, environmental factors and mechanical factors on hydrogen sulfide corrosion resistance of steels for oil country tubular goods were discussed.
The influence of alloy elements, defects, environmental factors and mechanical factors on hydrogen sulfide corrosion resistance of steels for oil country tubular goods are discussed.
Pressure is an important factor affecting the diffusion rate and corrosion rate of hydrogen atoms in materials.
Corrosion properties of 3% Cr steels in oil and gas environments.
Corrosion properties of 3% Cr steels in oil and gas environments.
Online since: November 2012
Authors: Hui Li Ma, Chun Xu, Peng Zhang, Qing Lin Guo, Yong Chun Cheng
The factors affecting the fatigue life of asphalt concrete are divided into internal as well as external factors.
Internal factors include asphalt typesamountgradation and porosity[4]while external factors include load axle weightintermittent time and temperature[5].
Under the action of loadglass fiber can well dissipate the local stress concentrationsmaking composite modified asphalt concrete have better mechanical properties than the singly modified asphalt concrete.
Analysis of key influential factors of asphalt2mixture fatigue property [J].
Study on the effect factors of asphalt mixes fatigue properties[J].
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