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Online since: April 2015
Authors: Shie Chen Yang, Hsi Chuan Huang, Shie Chen Yang, Feng Che Tsai
The flowing velocities are dependent on the size and gravity of the abrasives and the vibration energy is determined by the material properties and the hardness of the abrasives.
However, the micro-burrs in surface finishing will occur and affect the subsequent processing quality and functionality.
But the grinding machining likely to be artificial and size restrictions which affect the final quality of the workpiece.
The workpiece material used in this study is 6061-T6 aluminium alloy, its material properties are shown in table 1.
In the experiment, the single-factor is chosen to examine the effects of fixture direction of workpiece on the burr removal efficiency of micro drilling holes.
Online since: November 2011
Authors: Qiu Yan Fan, Cai Lin Liu, Ke Qing Yang, Mei Qian Wang
The main physical and mechanical properties of mudstone are shown in Table 1.
(2)Use a variety of technical measures to reduce the effects of various factors on the anchor rod creep.
For example, the moisture content and temperature control etc. will affect the creep.
Therefore, survey, design and construction must take into account all aspects of these factors.
Therefore, survey, design and construction must take into account all aspects of these factors.
Online since: December 2012
Authors: Mat Johar Abdullah, A. Ismail
The Effect of Substrate Temperatures on the Structural and Optical Properties of Cosputtered ZnO and AlN Thin Films A.
The various applications of ZnO come from the interesting properties of this material.
The structural and optical properties of ZnO films are affected by the preparation conditions such as thickness of the films, substrate temperature, types of substrate, deposition pressure, annealing temperature and RF power.
Among these factors, the effect of changing the substrate temperature on film characteristic was less reported.
"Dependence of film thickness on the structural and optical properties of ZnO thin films."
Online since: October 2010
Authors: Tie Wang, Fu Qiang Zhao, Hong Mei Li, Jun Shen, Xiao Fen Li
As these factors have uncertainty in boundaries, the fuzzy reliability optimization design considers the main factors which affect the design, carry on the abstraction of the mathematical model according to the design target, and can offer reasonable and practical reference value.
What’s more, the method takes into account the discrete and fuzzy of the main factors and constraints which affect the design in order to acquire a better synthetically result.
Design standards, manufacturing standards and material properties are the major sources of fuzziness of the fine-pitch tooth profile.
The factors, factor levels and their membership degree that affect the optimal level setλ* are shown in table 1.
Considering the various affecting factors during the gear design, the paper adopts the optimal level-cut-set method, which can not only decrease the calculation but also reflect the economy.
Online since: April 2010
Authors: Zhou Fu Wang, Bao Guo Zhang, Xi Tang Wang, Hao Liu
With the important properties, such as transparency, strength, coefficient of thermal expansion, through the control of the composition, extent of crystallization, crystal morphology, crystal size and aspect ratio, glass-ceramics exhibit extraordinary interests for thermal, chemical, biological and dielectric applications.
It has been reported that good mechanical and chemical properties of glass- ceramic materials in the CaO-MgO-SiO2 system have indicated these materials as suitable candidate for use in wear resistant, thermo-mechanical, biomedical and ceramic-coating applications [7-13].
The bulk chemical composition, nucleant added, final phase assemblage and microstructure are the most important factors affecting the technical properties of glass-ceramic materials [7,8,14,15].
Considering the fact that some aspects of structure and crystallization behavior affected by compositional changes in the CaO-MgO-SiO2 system are still unclear, and different crystal types in glass-ceramic materials influence the properties greatly, it has been decided to conduct an investigation on the characterization and crystallization behavior of the above glass system with the changes of CaO/MgO weight ratio using minerals as the major starting materials.
CaO/MgO weight ratio was chosen as a factor to conduct an investigation on the glass structure and cystallization behavior of the mentioned glass system.
Online since: December 2014
Authors: Guang Hui Xue, Er Meng Liu, Yi Ming Li, Wu Miao
Error penalty parameter C and kernel parameters σ affect the generalization ability of learning machine.
Due to the different mechanical properties, acoustic pressure signal of coal and rock generated is also different, so the purpose of interface identification can be come true by detecting the acoustic pressure signal [3].
Dimensionless parameter mainly contains peak factor C, pulse factor I, margin factor L, skewness factor P, kurtosis factor K and form factor S [4-5].
With respect to the parameters of coal caving, the kurtosis factor, pulse factor, margin factor of rock falling increases obviously.
The feature vector Q built by the dimensionless parameter can be described: Q = [skewness factor, kurtosis factor, form factor, pulse factor, peak factor, margin factor].
Online since: October 2022
Authors: Hong Ying Yu, Shi Cheng Wang, Jiajia Si, Kang Kai Hu, Dong Bai Sun, Wei Gao
Low carbon steel is a common marine engineering material [5-6], which has low-cost and good mechanical properties.
Mechanical and Corrosion Properties.
Gao et al. [31] believed that pore is prone to stress concentration, but it is not considered to be the main factor affecting shear strength in this paper.
The effect of Cu interlayer thickness on microstructure, mechanical properties and corrosion resistance were studied.
Misra, Effect of Interfacial Compounds on Mechanical Properties of Titanium–Steel Vacuum Roll-Cladding Plates, Mater.
Online since: August 2013
Authors: Kai Cui, Bang Wen Huang
Meanwhile, for the sample without or less hydrophilic mineral, cohesive force is affected mainly by water content, and for the sample with large content of hydrophilic mineral, water content and dry density affect cohesive force together.
For a certain sample, the variation of moisture content and dry density affects internal friction angle less, while affects cohesive force more.
Since the triaxial test of unsaturated soil is more complicated, longer and more influential factors than saturated soil, the test has a research on the shearing strength and the influential factors of the three typical unsaturated mixed-soil from west Sichuan by using the SWCC got from former test and converting the test into conventional undrained triaxial test through controlling the water content of soil indirect.
For the soil which contains less or a little hydrophilic mineral, water is the main factor which has effect on the cohesion.
Chinese Journal of Geotechnical Engineering (2001), p. 412 [5] FUTAI, M.M., ALMEIDA, M.S.S: An experimental investigation of the mechanical behavior of an unsaturated gneiss residual soil.
Online since: April 2022
Authors: Ilesanmi Afolabi Daniyan, George Orgwara, Monisola Adewale, Adefemi Omowole Adeodu, Funmilayo Deborah Adewumi
However, due to its high hydroxyl content of cellulose, natural fibre is susceptible to water absorption which invariably adversely affects properties of the composite.
The hydrophilic property of the natural fibres affect negatively the mechanical and microstructural properties of the NFPCs [10; 16].
According to Reddy and Yang [29], tensile strength and elongation of natural fibres are functions of factors such as cellulose content, ratio of length to diameter of the fibre and microfibrillar angle.
Rafiq, Mechanical Properties of Carrot Fibre-Epoxy Composite, Baghdad Science Journal. 9, 2 (2011) 335-340 [13] H.N.
Jonoobi, Mechanical Properties of Hybrid Kenaf/Glass Reinforced Epoxy Composite for Passenger Car Bumper Beam, Materials & Design. 31, 10 (2010) 4927–4932.
Online since: November 2013
Authors: Saeed Hesaraki
The in vivo resorption of bioceramics is governed by two factors: Factors affected by dissolution of the material into the body fluids and depends on the final components of implant such as surface area, crystallinity, phase composition and so on and factors that are induced by body environment such as cellular activity of osteoclasts, macrophages, and white cells around the implant [4].
Regarding to these factors, several efforts have been made to improve the resorption rate of HA implants by increasing its surface area and declining its crystallinity.
Some of the above mentioned fabrication techniques are not sufficiently suitable to control scaffold structure to modulate mechanical properties.
The structural analysis, mechanical strength and cellular biocompatibility of the produced scaffolds were announced.
Kozłowska, Properties and modification of porous 3-D collagen/hydroxyapatite composites, Int.
Showing 12261 to 12270 of 25943 items