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Online since: February 2015
Authors: Jia Dong Chang, Yun Peng Chang, Xiao Lao Sun, Gui Xi Jia
The affected factors of bearing performances rather complicated, such as design structure parameters, manufacturing precision of bearing parts, in addition, lubrication conditions, installation accuracy and so on.
The properties (e.g. vibration, temperature rise and speed) and the parameters (e.g. test time and motor current) were automatically controlled by a computer.
So it showed, in a certain temperature range, that temperature rise did not affect on the vibration values of coatings bearing.
Therefore, the coated bearing has good temperature properties.
Effect of N2 partial pressure on the microstructure and mechanical properties of magnetron sputtered CrN films[J].
Online since: February 2011
Authors: Cheng Wu Du, Li Ying Li, Di Wu, Hai Bin Wang, Qi Hua Liang
Production test process control 823 steel chemical composition and mechanical properties are shown in Table 1 and Table 2, respectively.
Compared with the traditional ingot casting, the superheat in continuous casting tundish affects the segregation and solidification greatly.
Based on the properties of 823 and the process of continuous casting, considered the mould powder composition, viscosity, melting temperature, melting speed and crystallization temperature, medium carbon steel mould powder was used to produce 823 steel[8].
Results and discussion The results of macroscopic examination, microscopic examination and mechanical properties of random sampling show that all the index meet the requirements.
The properties of steel bloom meet the requirements.
Online since: March 2011
Authors: Fang Dong, Bao Yu Xu, Xu Dong Wang, Yi Lun Liu
There have so many factors can induced vibration, such as rolling part, rolling technology, rolling equipments, and control system.
In fact, all of the factors can induced the vibration of rolling mill above mentioned, which make the vary of the rolling forces, and excite the rolling equipment system ,and further makes the rolling equipment system vibrations.
The trend directly affects the accuracy of the signal, and should be eliminated.
As the rolling mill random noise factors by many uncertainties, it can be assumed to have the normal characteristics.
For the stationary stochastic excitation model, as long as the mean and correlation function, or mean and spectral density determined, the statistical properties can be fully determined.
Online since: September 2016
Authors: V.S. Deeva, S.М. Slobodyan, V.S. Teterin
The importance of prevention and minimization of small particles coalescence by separating the oil stream leads to the need of improving the properties of the dispersers to boost their efficiency.
This influence happens down the particles in the mechanical form of compressional–depressional wave.
In this article’s arguments, we obtained the expression for calculate parameter of the separator established the mathematical relation which links the properties of the flow to characteristics of the spherical solid–elastic nail system.
Wu, Structural and dynamic properties of colloids near jamming transition, Colloids and Surfaces A: Physicochem.
Slobodyan, The probability factor of contact measurements, Measurement Techniques. 54 (2011) 68-73
Online since: February 2025
Authors: Baraka Kichonge, Vicent Marwa, Juma Rajabu Selemani, Thomas Kivevele
Elevated temperatures can hasten undesirable changes in vaccine properties, foster the growth of harmful bacteria, and ultimately reduce product shelf life [12].
They consider the natural heat transfer from outside factors and heat conduction within the insulation material.
The main factors influencing the choice of mesh size are the type of structure being evaluated and the scope of the study.
It was important to note that using only solar power brings variability to the experimental setup, possibly affecting the reproducibility and generalizability of the results.
Kose, “Phase change materials: types, properties and applications in buildings,” vol. 1, pp. 190–210, 2022, doi: 10.34186/klujes.1126167
Online since: March 2015
Authors: Yulia S. Zhukova, Vladimir Brailovski, Sergey Prokoshkin, Karine Inaekyan, Mikhail Petrzhik, Mikhail Filonov, Yuriy Pustov, Sergey Dubinskiy, Andrey Korotitskiy, Vadim Sheremetyev
These factors are responsible for the crystallographic reversibility of martenstic transformations.
In contrast to the mechanical properties, the corrosion and electrochemical characteristics can only be referred to as “material/medium” properties [24, 65].
In vivo corrosion behavior is function of multiple factors of chemical, physical and biological nature and, therefore, difficult to predict.
Therefore an investigation of effect age-hardening on mechanical and functional properties was performed.
Korms, Martensitic transformation, thermal expansion and mechanical properties of titanium–niobium alloys, J.
Online since: February 2011
Authors: Xiao Bing Li, Ying Liu
Wettability of solid surfaces is one of very important properties, which is governed by both the interface energy and the microstructures.
The hydrophobic or hydrophilic property of solid surface all can be progressed by roughness.
Then the Eq.3 is obtained by the introduction of roughness factor to Eq.4.
Therefore, for the Wenzel model surface, the microstructures can improve the hydrophobic or hydrophilic properties of solid surfaces.
Mechanical Science and Technology, 2007, 26(7): 822-827
Online since: April 2021
Authors: Jun Ma, Togeir Welo, Jørgen Blindheim, Taekwang Ha
It is known that springback seriously affects the dimensional accuracy of formed part, the process flexibility, the manufacturing cost, and the overall equipment effectiveness [4], so that the springback problem must be carefully addressed in design and development of new forming processes.
For a stretching-controlled bending process, one of the most important factors affecting springback is the stretching strain applied in the forming process, which is a major parameter determining how much springback reduction can be achieved [3].
The mechanical properties are obtained by tensile tests (as shown in Fig. 3 (a)) and described as follows: Elastic modulus is E=71,982 MPa, the 0.2% offset proof stress (initial yield stress) is σ0.2=146 MPa, the ultimate tensile strength is σb=266 MPa.
However, the overlarge stretching strain can simultaneously induce severe thinning, cross-section distortion, increased damage level, and other defects, some of which may affect product performance, for example, fatigue life.
In addition, the influential factors on springback in this forming process is more than stretching strain, the stretching-bending loading path may make difference in springback, which also needs a careful exploration, thus providing an in-depth understanding of the stretching-induced effect on springback.
Online since: October 2017
Authors: G. Korotcenkov, B.K. Cho, Vladimir Brinzari, I.A. Pronin, M.H. Ham
Electrophysical Properties.
The surrounding gas affects electrical properties through the surface reactions.
Surface Properties.
Structural Properties.
Too many additional factors, which can affect electrophysical, structural and gas sensing properties of the material appear in the complex metal oxides and nanocomposites.
Online since: March 2008
Authors: Dian Wu Huang, Feng Zhan, Qi Jian Zhu
Introduction Ultrathin plate-like elastic structural elements with excellent physical, chemical and mechanical properties have been widely applied in Microelectromechanical Systems (MEMS) and Nanoelectromechanical Systems (NEMS) in recent years [1,2].
Therefore, much attention and great interests have been attracted to study the mechanical properties, especially the elastic response of these elements due to their aforementioned scientific and technological significance [3-5].
It is known that the surface of solids, a region with very small thickness, is different in arrangement of atoms and properties from those of the bulk materials [6,7].
And in this model, the influence of the nonlinear terms, normal stress, static and dynamic factors are incorporated.
Shenoy, Size-dependent elastic properties of nanosized structural elements, Nanotechnology 11 (2000) 139-147
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