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Online since: January 2020
Authors: Sabah Hatam Obaid, Adnan Noori Ahmed, Hadi Raheem Ibrahim
K=Mechanical properties factor with constant value ( 300 ) 1.
The resulting deflection from these forces affecting on the shaft can be explained by the methods of analysis of different stresses.
The above mentioned types of steel resist corrosion and maintain mechanical properties at high temperatures and are widely used in automotive parts such as driving shaft at high speed, it can be used in the vehicles chassis in a form of sheets [9].
Surface strain hardening values (h) can be calculated by knowing the values of the rate of cycle alternating stress (σr ) during revolutions failure (Nf ) and mechanical properties factor ( K ).
And this factor decreases in the case of immersing shafts in salty water and the affect the performance of shaft metal during revolving.
Online since: November 2012
Authors: Hideaki Tanaka, Yukio Maeda
However, no detailed study has investigated the effects of mechanical stress on the magnetic performance of TMR heads, particularly with regard to nanoscratching.
To investigate the effects of scratches on the magnetic properties of the TMR head, we measured the scratch depths by atomic force microscopy (AFM).
Thus, the magnetic properties of the shield are clearly affected by the presence of nanoscratches.
On the other hand, the line width Δf depends only on the magnetic damping factor α.
This affected layer can be removed by IBE.
Online since: July 2017
Authors: Saowaluk Boonyod, Chaiwute Vudjung
The addition of OA into NR/BC affect vulcanization properties of NR/BC masterbatch that retard the cure time of their compound.
Their cure and mechanical properties were characterized by Oscillating Disk Rheometer (ODR) and mechanical tests.
The effect of BC and OA loading on mechanical properties of vulcanizates.
This could be similarly explaining the result of the tensile properties of the vulcanized NR presence OA, the increasing of polymer chain flexibility due to added plasticizer, which affected to decrease the mechanical properties of the vulcanizates [6].
Bacterial cellulose reinforced polyurethane-based resin nanocomposite: A study of how ethanol and processing pressure affect physical, mechanical and dielectric properties.
Online since: May 2004
Authors: Faik Nuzhet Oktar, G. Göller, E.Z. Erkmen, Yasin Genc, H. Haybat, D. Toykan
Sintering Effect on Mechanical Properties of Enamel Derived and Synthetic Hydroxyapatite-Zirconia Composites Y.
Unfortunately, mechanical properties of pure HA ceramics are poor.
A suitable method of improving its mechanical properties is based on the synthesis of composites made of HA and other ceramics powders, metal particles or polymers [8].
The objective of this study is to improve the mechanical properties of HA-Zr composites and to verify the influence of some parameters, such as the content of the Zr phase added, and the sintering temperature, on the final densities, compressive strength and microhardness of the composites.
But for factor of Zr content, only Synthetic HA-Zr compacts were affected significantly (Enamel HA-Zr: Fratio of Zr=4.439; p-value=0.051; Syn.HA-Zr: FRatio of Zr=25.130 p-value=0.000).
Online since: May 2015
Authors: Mohd Shahir Kasim, Mohd Amran, Raja Izamshah, M. Hadzley, Zainudin Zuraidah
The findings suggest that feed rate was the main factor affecting surface roughness and delamination .
The mechanical properties of the specimen are listed in Table 2.
Level Spindle speed (rpm) Feed rate (mm/min) Depth of Cut (mm) -1 1000 200 2 0 1500 400 4 +1 2000 600 6 Table 2 Jute-glass hybrid composites mechanical properties.
From the study, the feed rate was the main factor affecting surface roughness and delamination, while cut depth was the least significant factor within the design space.
Romanzini, Influence of fiber content on the mechanical and dynamic mechanical properties of glass/ramie polymer composites, Mater.
Online since: August 2013
Authors: Long Fan, Jun Long Xing, Qing Xiang Zhang, Hou Sheng Jia, Zhi Gang Wang, Xi Dong Zhao
Through the structure instability theory analysis of the coal roadway roof ,the author concluded that mechanical properties of rock, location, thickness and thickness ratio is the main factor affecting the instability and failure of rock structure.
Introduction According to the theory of the bolt support design, the roof lithologic characteristic and rock structure are the main factors influencing the bolt support design and supporting effect.
The bolt is under the tensile and shear affect and its reaction took control of the abscission layer of rock and the shear rupture.
Accordingly, the instability failure of the rock structure has close relationship with mechanics properties, location of the layer and formation thickness and thickness ratio, especially when the tunnel span is certain, stable thickness of strata in roof plays a decisive role.
The drilling rock damage theory points out that the instantaneous information of the anchor rod drilling machine can reflect the drilling rock physical and mechanical characteristics such as density, strength and hardness.
Online since: April 2022
Authors: Mercy Ogbonnaya, Mufutau Akindoye Waheed, Oluseyi O. Ajayi, Enesi Y. Salawu
From the review, the thermophysical properties of the nanorefrigerants affect the pressure drop and heat transfer characteristics of the vapour compression refrigeration system.
The method used in the preparation of the nanofluid influences the thermophysical properties of the nanorefrigerant, thereby affecting the overall performance of the VCRS.
Thermophysical properties on nanorefrigerants The heat transfer processes in the VCRS is affected by the finite values of the thermophysical and hydraulic properties of the heat transfer fluid.
The rate at which heat is removed from the system, overall efficiency, and pressure drop in the systems are affected by these properties.
Thermophysical Properties of Al2O3-Water Nanofluids, Materials Science Forum Trans.
Online since: May 2018
Authors: Hai Yun Jin, Nai Kui Gao, Peng Fei Gao, Zhi Wei Li, Cheng Lei Li, Sa Jia Liang, Ze Hua Pan
The degree of crystallinity of water-soaked cable insulating material is also increased, and the mechanical properties were deteriorated.
Relevant reports [3-8] showed that the environmental problems were the main factors which caused the cable to malfunction, such as the long-term humid environment.
A few reports had concerned on the influencing of water factor on the insulation properties of XLPE cable.
However, the investigations of above studies are more concerned about the electrical properties due to combined influencing factors of water, electro-thermal aging and so on.
Therefore, the thermal stress would develop under long-term temperature which would affect the physicochemical properties and crystal morphology.
Online since: April 2012
Authors: Zhao Hui Deng, Piao Long, Sheng Chao Li, Lin Lin Wan
Introduction In aerospace, hi-tech manufacturing and other industries fields, the demand of curved surface workpieces made by high temperature ceramic materials is growing because of their unique physical properties and significant improvements in their mechanical properties and reliability [1].
It’s affected by the polishing wheel speed and polishing wheel feed rate.
The factors along with their level are given in Table 1.
The selection of orthogonal array (OA) is concerned with the total degree of freedom (DOF) of the factors.
According to the results of anova, it indicates that the process parameters affecting the MRR of rotary curved surface of Si3N4 in CMP in the order of polishing wheel speed, polishing wheel feed rate, and slurry concentration.
Online since: October 2022
Authors: Mikhail Vasilevich Nemchinov, Mateusz M. Iwański
Analysis of the results showed that the process of bitumen foaming with water significantly affected the basic and low-temperature properties of the bitumen.
Evaluation of compactability and mechanical properties of bituminous mixes with warm additives.
Iwański: Study of the Simultaneous Utilization of Mechanical Water Foaming and Zeolites and Their Effects on the Properties of Warm Mix Asphalt Concrete.
Mechanical property characterization of warm-mix asphalt prepared with chemical additives.
Evaluation of compactability and mechanical properties of bituminous mixes with warm additives.
Showing 2261 to 2270 of 26166 items