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Online since: May 2020
Authors: Valeriy V. Savin, Mikhail Sorokovikov, Victoriia A. Chaika, Artem Marikhin
The magnetic and mechanical properties of the magnets Fe-Nd-B system are more dependent on the size and shape of the grain structure.
Alloying the alloy with transition and rare-earth metals and boron group metals affects the crystallographic parameters of the structure, changes the electronic structure of the alloy, and ensures the formation of high-level magnetic properties [1-3].
The magnetic properties of the material and products from such an alloy are sensitive to the type of grain structure and grain size [4].
Influence of Nd Doping on the Magnetic Properties of Nd2Fe14B/α-Fe Nanocomposite Magnets, Materials Science Forum. 809-810 (2015) 88-92
Effect of Boron on Magnetic Properties and Corrosion Resistance of High Energy Magnets, Advanced Materials Research. 79-82 (2009) 1043-1046
Online since: June 2011
Authors: S. Mridha, M.O.H. Amuda
This ensures that the area of the base metal affected and exposed to the weld thermal cycle is reduced and hence probably generates less metallurgical distortion.
Introduction The heat condition during welding controls the character of the microstructure of the welded joints and hence the properties [1].
However, the influence of the heat transfer factor in terms of the cooling dynamics on the microstructural features and hence properties of welds have not been well investigated.
Influence of Cooling Conditions on Weld Macrostructure Figs.1 and 2 show the macro profiles of the coupons’ weld pools produced under different heat inputs and transfer factors.
Noorul Haq: Effect of friction welding parameters on mechanical and metallurgical properties of ferritic stainless steel, Int.
Online since: October 2010
Authors: Gert Jan Swinkels, Piet Sonneveld
In practice, mechanical restrictions, plant conditions and costs will determine the implementation.
Therefore a large number of parameters (material properties, greenhouse dimensions) should be taken into account.
Because of mechanical restrictions, plant conditions and costs the number of parameters is restricted.
Compared to flat lamellae the performance slightly improves while reducing the PV-cell area significant, in this case with a factor 2.
In practice, mechanical restrictions, plant conditions and costs will determine the implementation.
Online since: December 2014
Authors: Min Liu, Yong Chen, Feng Hui Zhao, Run Liu Chen, Yu Qiang Guo, Gui Lin Fu
The obtained hemicelluloses were characterized by Fourier transform infrared spectroscopy (FT-IR), gel permeation chromatography (GPC), and comprehensive thermal analysis (TGA), which showed that potassium hydroxide significantly affected the yield of relatively pure hemicellulose.
These basic properties are very important for the suitable and reasonable studies of CS biomass.
The factors affecting hemicellulose extraction, such as hydrogen peroxide concentration, magnesium sulfate, pH value, and reaction temperature and time were analyzed by an orthogonal experimental design (Table 1) with optimization by single-factor experiments.
The L16(4-5) Orthogonal Test Table Factor A H2O2 (%, w/v) B MgSO4 (%, w/v) C pH value D Temperature (°C) E Time (h) Level 1 4 0.1 10 50 2 Level 2 6 0.2 11 60 4 Level 3 8 0.3 12 70 6 Level 4 10 0.4 13 80 8 Chemical Analysis.
Thus, hemicellulose-lignin linkages can be adequately exposed to the reacting solution, which positively affects extraction yield.
Online since: June 2010
Authors: Kou Cheng Zuo, Bamber Blackman, J. Gordon Williams, Helmut Steininger
Results and discussion Thermal properties.
Tensile and compressive tests were carried out to determine the quasi-static mechanical properties of MeO nano-modified composites at 23 ºC.
Fracture and fatigue properties.
[3] Kinloch, A.J., Taylor, A.C., The mechanical properties and fracture behaviour of epoxyinorganic micro- and nano-composites.
[5] ISO 527-4, Plastics-Determination of tensile properties. 1997: ISO, Geneva
Online since: February 2012
Authors: Yu Hong Tang, Zhi Hua Li, Zhi Hai Hao, Ya E Li
And the factor that axial compression ratio, reinforcement proportion of the concealed bracings significantly affect the seismic behavior of the I-shaped short pier shear wall with concealed bracings Introduction RC shear wall with concealed bracings are widely used in built and under construction in civil engineering, domestic and foreign scholars have done a lot of research work about the seismic performance and mechanical characteristics for RC shear wall with concealed bracings.
Factors of the numerical calculation and analysis Axial compression ratio The remaining parameters are the same as the original model in any case, non-linear finite element analysis were collected the different axial compression ratio of 0.1,0.2,0.4.
Experimental Study on Seismic Property and Calculation of Load-Carrying Capacity for Low-Rise RC Shear Walls with Concealed Bracings[J].China civil Engineering journal.2004,37(3):44-51 In Chinese [2] Cao Wanlin, Dong Hongying.
Online since: December 2009
Authors: A. Erman Tekkaya, Thomas Kloppenborg, Nooman Ben Khalifa
Hence, an undefined material flow inside the welding chamber induces reinforcement deflection, which can lead to reduced mechanical properties, as momentum of inertia.
Namely, depending on the material flow conditions in the die, reinforcing elements are deflected horizontally and vertically in relation to the supply position, which yields a change in the mechanical properties like moment of inertia (Fig. 2).
The errors are affecting on the particle tracing results.
Schomäcker: Composite Extrusion - Determination of the Influencing Factors on the Positioning of the Reinforcing Elements, Advanced Materials Research: Flexible Manufacture of Lightweight Frame Structures, Vol.10, 2006, p.13-22 [9] G.
Online since: August 2012
Authors: Fa Feng Xia, Liang Miao, Chun Hua Ma
School of Mechanical Science and Engineering, Northeast Petroleum University, Daqing 163318, P.R.
Microstructure of specimen film were observed by Tecnai-G2-20-S-Twin high respective transmission electron microscope, after being mechanical reducing and ion reducing on Gatan-600 double-ion reducing machine.
This is because when the ultrasonic wave was overpowered, the ultrasonic cavatitions affected the oriented deposition of AlN particles, caused the AlN content in the layer to decrease, and thus increase the abrasion.
The reason why the Ni grains fined during the deposition can be attributed to three factors: (1) The co-deposition of nano AlN particles in the layer provided a great deal of nucleating points for crystallization, and hindered the grow of the Ni grains. (2) Pulse current was applied in the experiments.
Ebrahimi F., The effect of deposition parameters on tensile properties of pulse-plated nanocrystalline nickel.
Online since: March 2010
Authors: Hui Hui Li, Yong Yang, Guang Yao Meng
Introduction Ti6Al4V alloy has been regarded as crucial material of modern aerospace industry because of its excellent mechanical properties [1].
However, the main factors that causes monolithic component distortion is redistribution of residual stress during material removal and low rigidity of workpiece.
The Johnson-Cook material law coefficients in Eq.1 are identified from high strain rate mechanical experiment using the SHPB method.
Because the acting spot of cutting loads is local and the affected region is very small, based on theory of SWINAN, it is equivalent that the loads on arc li are applied on arc li1 and li2 .
Sun: Chinese Journal of mechanical engineering Vol. 68-71 (2005), p. 117-122 (In Chinese) [5] Z.J.
Online since: April 2013
Authors: Ching Bin Lin, Zue Chin Chang, C.F. Hsiao, Jin Shin Ho
Hsiao1 1Department of Mechanical and Electro-Mechanical Engineering Tamkang University Tamsui, New Taipei City, Taiwan, Republic of China 2Department of Mechanical Engineering National Chin-Yi University of Technology Taiping City, Taichung County, Taiwan, Republic of China acblin@mail.tku.edu.tw Keywords: hot embossing; poly (methyl methacrylate); average molecular weight; number average molecular weight Abstract.
The embossing temperature, pressure, time, and procedure factors governing hot-embossing were also reported [7].
Table 1 The Average molecular weight and molecular numerical of PMMA micro-pattern as a function of the base width Conclusion The flow behavior of the softened PMMA into micro-cavity during hot-embossing is that the size of the micro-cavity will affect the average molecular weight and number average molecular weight.
Mechanical Industry Research Laboratories.
Properties of polymers, 3rd ed.
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