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Online since: August 2011
Authors: Ji Zhu Liu, Xiao Hui Yu, Shao Hua Wang, Tao Chen, Rui Zheng Long
Introduction PMSM has been widely used in industry, national defense and other fields for the characteristics of simple structure, high power density, high power factor and the high reliability.
Material Properties of PM For inherent characteristics, permanent magnet materials can create a magnetic field in the surrounding space without the external energy after the pre-magnetization (charge magnetism).
Knee Point Calculation Thermal stability refers to the change degree of PM magnetic properties caused by the change of environmental temperature.
The quality of thermal stability directly affects permanent magnet demagnetization.
Beijing: China Machine Press, 1997 [5] D.N.Brown,B.Smith,B.M.Ma,P.Campbell.The Dependence of Magnetic Properties and Hot Workability of Rare Earth-Iron-Boride Magnets Upon Composition.IEEE Transactions on Magnetics,2004,40(4):538-540 [6] M.Negrea,M.Rosu.Thermal Analysis of a Large Permanent Magnet Magnet Synchronous Motor for Different Permanent Magnet Rotor Configurations.2001(IEMDC 2001):777-781
Online since: March 2013
Authors: Petr Slobodian, Robert Olejnik, Pavel Riha, David Petras
The conductance properties of multi-walled carbon nanotube mats and their polystyrene composite were examined to investigate the mechanism of conduction and the specific role of the supporting polymer.
This mechanism is affected by the polymeric portion of the composite, since the temperature dependence of the composite conductance is decreased.
Consequently, numerous studies were aimed to reveal its mechanical, electrical and other properties.
T denotes temperature, b is constant depending on the geometrical factors from the effective fraction of the length for the barrier portion and c is constants depending on the barrier to conduction parameters [6-9].
Summary Conduction properties of a multi-walled carbon nanotube mat and its polystyrene composite were investigated using a four-point measurement system over a broad range of temperatures.
Online since: December 2014
Authors: Jorge Fernandez Dos Santos, Roger Navarro Verastegui, Telmo Roberto Strohaecker, José Antonio Esmerio Mazzaferro, Cíntia Cristiane Petry Mazzaferro
The joining of steel and aluminum alloy A6061-T6 applying the laser pressure welding technology has proven to generate sound welds with good mechanical properties as reported by Nishimoto et al [2].
Zhang et al [9, 10] reported that the joining of hot-dip galvanized steel and pure aluminum AA1060 can be done by the modified Metal Inert Gas process (MIG) obtaining good mechanical properties.
Taguchi methods steps – three factors, two levels and three replications – lead to the best parameters combination shown in Fig. 7.
Hackl, Interfacial microstructure and mechanical properties of aluminum–zinc-coated steel joints made by a modified metal inert gas welding–brazing process, Materials Characterization 58 (2007) 588–592 [10] H.T.
Microstructure and Properties of Friction Spot Welds in a 2-mm Thick Alclad AA2024 T3 Alloy.
Online since: August 2020
Authors: Thapakorn Chareonying, Prasert Akkaramongkolporn, Theerasak Rojanarata, Praneet Opanasopit, Prasopchai Patrojanasophon
The physiochemical properties of the tablets and the release profiles of fluorescein from the 3D-tablets were investigated.
The 3D-printed PVA tablets were successfully produced with favorable physical and mechanical properties.
Each type of filament has different properties and applications.
Conditions for thermal crosslinking, including crosslinking temperature and crosslinking time, are important factors affecting the applications of the polymers.
Therefore, the physical properties of 3D-printed tablets were satisfactory.
Online since: March 2008
Authors: Muhetaer Kelimu, Marc Thiriet
Besides, the duct walls are currently assumed to be rigid due to the lack in knowledge on rheological properties of the solid walls, either in the normal state or in the pathological state.
Even in static condition, ECM features affects cell adhesion and spreading, differentiation, migration, and apoptosis.
They augment the activity of transcription factors, such as activator proteins AP1 and AP2, cAMP response element, early growth response protein EGR1, and NFκB, with a magnitude which depends on the cell type (on the vascular region).
Receptor serine/threonine kinases (RSTK) and umor necrosis factor receptors (TNFR) control the cell fate.
PoG: proteoglycan, NOx: NAD(P)H oxidase, NFAT: nuclear factor of activated T cells.
Online since: November 2007
Authors: Shahrum Abdullah, Azman Jalar, Z. Endut, I. Ahmad, Suhaila M. Yusof
However, the dicing process for DAF wafer usually associated with sidewall chipping, DAF whiskering and crack that will affect reliability of Quad Flat Non-Leaded (QFN) stacked die.
Blade properties and characteristics are the crucial factor in analyzing the DAF dicing results.
Introduction Wafer dicing is mechanical process used in the microelectronics industry for die separation.
The silicon die is known to be brittle in property, where else DAF tape is made up from vicious liquid polymeric materials with silica or alumina filler is added to change the DAF properties.
Online since: October 2009
Authors: Hong Hai Xu, Yu Xia Zhao, De Wen Gao
Study on Computer-aided Optimizing Milling Parameters of Numerical Control Machine Zhao Yu-xia1, a , Xu Hong-hai 2, b , Gao De-wen 3,c 1,2College of Mechanical and Electrical Engineering, North China University of Technology, China 3 No.5 Jinyuanzhuang Road, Shijingshan District, Beijing, P.R.
Introduction Selection of milling parameters is one of the key factors that affect the product quality and productive efficiency during NC machining process.
Milling parameters, such as spindle rotation speed, cutting depth and width, are more important active factor in NC milling process and different combination of them would have different outcome.
Due to the uncertain or random factors such as change of the material properties, abrasion of the tools, heating deformation, etc, would affect the working conditions, subsequently would affect the optimization results.
Online since: February 2015
Authors: Hong Shao, Yue Shao, Xiang Long Liu, Yun Jiao Li
The functional properties of peanut protein were enhanced remarkably by ultrasonic waves.
The research of the functional properties of peanut protein products [J].
The research of preparation and its functional properties of the mung bean isolated protein [J].
The functional properties and the exploitation and the application of the soybean isolated protein [J].
The functional properties of the soybean isolated protein and its application in the food industry [J].
Online since: May 2025
Authors: Henry Setiyanto, Sukarni Sukarni, Nandang Mufti, Hariyanto Hidayat, Fadhillah Choirunnisa
The reduction of Fe element can be caused because the magnetic properties of Fe are affected by temperature [25].
Along with that, the increase of Fe3O4 mass in a system can affect the magnetic properties of the whole system.
Thus, in order to maintain the magnetic properties of materials, it is important to understand the environmental conditions and factors that can affect them.
Too low or high Fe3O4 added, results in a composite structure, optical properties, and other chemical properties that are not optimal in degrading wastewater.
A mini review on factors affecting particle size, sphericity and pore size of mesoporous silica nanoparticles. 2020; 11: 15, 20
Online since: August 2015
Authors: Trevor A. Dean, Nan Li, Jian Guo Lin
The mechanical properties of martensitic boron steel, achieved through conventional press hardening processes, are well known and usually provided as product information by steel suppliers.
Due to the potential advantages of parts with tailored mechanical properties, interest in forming hot stamped boron steel with non-uniform microstructure has arisen.
With respect to this work, since boron steel with different phase states are heat treated from the same initial microstructure, and subjected to the heating rate and soaking time, variations in morphological factors can be neglected [10].
High Strain Rate Properties of Hot Formed Die Quenched Boron Steel.
Grajcar, Heat treatment and mechanical properties of low-carbon steel with dual-phase microstructure.
Showing 13671 to 13680 of 25943 items