Search results

Wang etc [30] designed orthogonal scheme of five factors and two levels, studied the influence of geometrical parameters on the characteristics.
The results show that it had the property of both high efficiency and non-overload.
Ou etc [33] chose five factors, namely, impeller outer diameter, impeller outlet width, blade outlet angle, number of blades and L and orthogonal test scheme is formulated.
Influence of slurry on performance The character of slurry is the key factor which can affect pump performance and design.
Chinese Journal of Mechanical Engineering, 2010, 23(1), p 53-59

Introduction Due to its unique thermal, mechanical, and electronic properties, SiC has emerged as a crucial material in high-power electronics and devices designed for operation in harsh environments.
By utilizing NZFMR to probe the spin properties of active defects in standard SiC p-n junction devices, we have demonstrated an all-electrical SWaP relative magnetometry capable of operating at temperatures up to 500°C without isotopic purification or design enhancements.
Figure 4 demonstrates how an applied offset magnetic field affects NZFMR measurements and device sensitivity.
This reduction in sensitivity at elevated temperatures is primarily driven by two factors: the broadening of the NZFMR signal (i.e., σ) and a decrease in the current response (i.e., ΔI) to magnetic fields.
Despite these factors, the sensitivity reduction is modest (almost two orders of magnitudes), demonstrating that our SiC-based NZFMR sensor remains robust for high-temperature magnetic field detection, even though not specifically designed for magnetometry applications.

The coupled thermo-mechanical problem was solved by the operator split technique [38].
This type of mechanical friction clutch is a very popular mechanical element used for effective braking of the rotating machine elements [41] or another type brake system [42].
The factor value is .
Mróz: Analysis of thermo-mechanical wear problems for reciprocal punch sliding, Adv.
Grzelczyk: Modeling and analytical/numerical analysis of wear processes in a mechanical friction clutch.

Utilizing molecular dynamics method not only a great deal of valuable micro-behaviors can be got but also the macro-properties of a material can be reproduced[15].
It is expected to probe whether crack growth properties have relationship with some parameters referring to radial distribution function in α-Fe during crack propagation at different temperatures.
Factor Cm(T) is defined as a function in form of
It has been found that the temperature significantly affects the crack growth rate.
High Temperature Thermal and Structural Material Properties for Metals used in LWR Vessels.

Alloy 2020, a high strength Al-4.5Cu-1Li alloy developed and offered commercially in the late 1950's was withdrawn from the market as a result of poor properties and production problems.
Voluminous information regarding mechanical properties and aging characteristics of these alloys exist, but only limited work regarding weldability has been done.
The maximum crack length, at saturation strain is correlated to the width of the heat affected zone.
Welding compounds the in homogeneity in weld / weld regions and creates serial regions of vastly different mechanical property.
When these factors interact to create a limited ability to tolerate strain in a critical temperature range, cracks form.

The presence of C3S, C2S, C4AF and C2F endorses steel slag cementitious properties.
Steel slag is rich in minerals such as C2S, C3S and the presence of C3S; C2S endorses steel slag cementitious properties.
The main factor that affects the practical application of steel slag is its poor soundness.
The steel slag which has cementitious properties can be used as partial or full replacement for Portland cement and it is attributable to the high energy consumption for the production of Portland cement.
Tsakiridis, et al, Properties and hydration of blended cements with steelmaking slag, J.Cement and concrete research. 37 (2007) 815-822

MR dampers utilise specific properties of MR fluid, which is a suspension of high-concentration soft magnetic particles in nonmagnetic carrier, thus it changes its apparent viscosity in the presence of magnetic field.
Its properties are as follows: Re > 450 MPa (typically 550 MPa), E = 200 GPa, Q–1 ≈ 4.4∙10–4 [-] at 1.5 Hz excitation [9].
Its properties are: Re > 825 MPa (typical 910 MPa), E = 110 GPa, Q–1 may be assessed to be ≈ 4.4∙10–4 [-] (at ca. 1.5 Hz excitation) based on [3].
The selections of system elements and properties (MR damper, shaker, tower material variants) described above, together with assumptions (c) – (f) and calculations based on [11] and on discrete frequency method (1)-(8), all made it possible to determine tower geometry (thus also mass) and mass of the nacelle.
[8] Kivineva E.: The Influence of Composition and Hot Processes on Heat Affected Zone and Weld Metal Behavior and Mechanical Properties of Ti Grade 5 and Stainless Steel, Doctoral Thesis, Royal Institute of Technology (KTH), Stockholm, Sweden, 2004

Alloying of NiAl and FeAl has been an important aspect of improving the properties of the materials based on NiAl and FeAl [3, 6, 7].
The two aluminides also rely on alloying for improving their properties.
Horton Jr., Effect of refractory alloying additions on mechanical properties of near-stoichiometric NiAl, Mater.
Miracle, The physical and mechanical properties of NiAl, Acta mater. 41 (3) 649-684 [54] Z.
Wasilewski, Electric and magnetic properties of B2 structure compounds: NiAl and CoAl, J.

Ionic Liquids Fractionation Ionic liquids (ILs) which are composed of organic cations and organic or inorganic anions have attracted much attention due to their favorable properties including high thermal stability, chemical stability, negligible vapor pressure, and non-flammability in recent years [9].
However, the price of ILs is high which becomes a major factor limiting the large-scale application of ILs in bio-refinery, thereby the reusability of ILs has to be improved aiming to reduce the industrial cost[22].
Moreover, extrusion process can provide a unique continuous reactor environment for combination of mechanical and thermo-chemical treatments of lignocellulosic materials at high throughput and solids loading [38,42].
These parameters affecting reaction severities and shear conditions have to be optimized for fractionating different types of lignocellulosic materials [44].
Steam explosion and twin-screw extrusion are based on continuous processes with short residence time and high throughput using the combination of mechanical and thermo-chemical treatments that efficiently depolymerizes the lignocellulosic structure.

As regards the HSLA steels development, two methods are applied for obtaining both high tensile strength and good toughness properties which characterise this type of materials: either by micro-alloying with small amounts of vanadium, niobium and/or titanium or by controlling the rolling temperature and the thermo-mechanically processing (TMCP steels).
The use of HSLA steels in onshore and offshore structures, shipbuilding and railway industry requires an appropriate design of welding technologies that less deteriorates the strength, ductility and toughness in the heat affected zone (HAZ) and weld [4].
In order to ensure a constant welding speed, the trolley (4) is actuated by the electro-mechanical driveline (3) and slides on the beam (5) through a multi-bearing system.
Besides, the control panel (4) detects the wire/work-piece short-circuit and changes the wire feeding from automated mode in manual mode, minimizing the mechanical stresses on the wire feed head supports [8].
Conf. on Advances in Mechanical and Robotics Engineering, DOI: 10.15224/ 978-1-63248-031-6-152, Zurich-Switzerland, 25-26 Oct. 2014, pp. 64-68