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Online since: January 2012
Authors: Yu Mei Liu, Z. L. Jiang, Z. Li
These factors in turn are affected by the tool geometries, the cutting conditions, and the properties of the work materials.
Establish Of The Mathematical Model In this research, all other factors are kept constant.
The four factors are shown in Table 1 and an orthogonal table is shown in Table 2.
By removing the insignificant factors one by one, the resulting ANOVA table for reduced model is shown in Table 3.
The adjusted R2 is a statistic that is adjusted for the “size” of the model; that is, the numbers of the factors (terms).
Online since: April 2011
Authors: Wen Juan Zhou, Wei Niu, Gui Bin Ji, Jia Long Chen
Artificial sand’s production can produce a certain amount of aggragate micro-fines, rational use of micro-fines will be an important factor about affecting application of artificial sand.
Different artificial sand has different mineral composition and microstructure, which fundamentally makes different sand have different properties.
The cement properties are listed in Table 4.
Effect of microfines in manufactured sand on properties of various strength grade concretes, Concrete, 2008(7):51~54.
Influence of Mass Fractions of Limestone Powder on Mechanical Property and Durability of Concrete, Journal of Building Materials, 2009, 12(3):266~271.
Online since: June 2006
Authors: Dezső L. Beke, Lajos Daróczi, C. Hegedűs, V. Kökényesi
For the further improvement of the bonding properties the detailed knowledge of the microstructure of the metal-ceramic interlayer is essential.
The properties of the base metals play fundamental role in the formation of interfacial phases.
Especially the oxidation ability and the microstructure of the developed surface oxide layer during the manufacturing process are the most important factors.
The excess ceramics were removed by mechanical grinding until the thickness of the ceramic layer reached about 0.05 mm thickness.
The formed, coarse grained complex oxide can strongly affect the mechanical properties of the metal-ceramic bonds.
Online since: May 2014
Authors: Daisuke Maeda, Osamu Kawano
Table1 Chemical composition Microstructures and Mechanical properties Fig.1 shows microstructure of DP steels.
This value was much higher than that of ferrite. fM was strongly related to mechanical properties.
Therefore, the factor related to coalescence seems to be effective for ductile fracture directly.
Fig.10 indicated the strain that void coalescence starts was mainly affected inter-void distance.
This indicates that void coalescence was mainly affected by inter-voids distances, not void fraction.
Online since: June 2018
Authors: Mindaugas Dauksys, Albertas Klovas, Danutė Vaičiukynienė
The properties of aggregates, such as the particle shape and content of fine particles, strongly affected the rheology of mortars, with a significant increase in the yield stress and plastic viscosity [12].
Physical and mechanical properties of Portland cement are presented in Table 1.
Physical and mechanical properties of Portland cement.
Technological properties of the concrete mixtures.
Effect of constituents on rheological properties of fresh concrete-A review.
Online since: June 2013
Authors: Ling Fu, Pan Li, Hui Li Ren, Chang Chun Gao
Analysis of Crane Ship lifting load Swaying Character With Multi-factors Coupling Huili Ren 1,a, Ling Fu 1,b, Pan Li 2,c, Changchun Gao 1,d 1 Zoomlion Heavy Industry Science and Technology CO.
Nonlinear movement will be generated on the crane ship lifting load with multi-factors coupling such as marine environmental loads, mass of load and the length of wire rope.
Idres established a nonlinear dynamics model of the crane barge, and analyzed the effects of lifting speed, rotation angle, and other factors to the System dynamic characteristics [4].
The analysis object of the ADAMS software is rigid bodies [8], and it can be used in conjunction with the ANSYS software to consider the elastic properties of the components.
Discrete method can truly reflect the bending and other mechanical properties of the wire rope.
Online since: April 2009
Authors: Yuan Lu, Bo Wang, Jian Feng Yang, Ji Qiang Gao, Wei Zhong Lu, Yao Hui Xue
The effects of diatomite particle size on the microstructure and mechanical properties of porous Si3N4 ceramics were investigated.
The particle size of starting powder is the most important factor that affected microstructures of sintered samples.
Fig. 2 SEM images of diatomite powder and porous silicon nitride ceramics obtained with different diatomite size (a) diatomite powder (b) 40µm (c) 10µm (d) 2µm (d) (b) (a) (c) Porous Si3N4 ceramics showed very excellent mechanical properties.
Summary Porous Si3N4 ceramics with high porosity and excellent mechanical properties were fabricated by the carbothermal reduction reaction between diatomite and carbon.
We investigated the influences of diatomite size on microstructure and mechanical properties.
Online since: June 2010
Authors: Mao Liang Wu
The theoretic analysis reveals the influence factors and the quantitative expression affecting parts deformation.
Introduction Rapid prototyping technologies fabricate parts through laminating materials layer by layer, so the neighboring layers affect each other.
Shrinkage is intrinsic property during the material solidification in rapid prototyping, which is constraint from the former layer and is equivalent to imposing a surface load on the solidified layers to engender the deformation.
Therefore, the stress expression changes to kXs =)(ε 0)()( == XX u b o b εε The above equations demonstrate that the material shrinkage stands on freely contractive state, only affects the current layer and has nothing to the adjacent solid layers.
[3] Ma Zhiguo, Wen Bangchun, Yan Yunhui: Chinese Journal of Mechanical Engineering, Vol.35 (1999), p 24-26.
Online since: September 2014
Authors: Shuang Fu Suo, Chun Yan Liu, Min Jie Xing, Qing Xue
Gas sealing performance of metal seal ring directly affects the security and reliability of equipment operation.
An average pressure flow factor Φ is introduced considering the sealing contact surface roughness, which represents the ratio of rough surface average flow and smooth surface flow. average pressure flow factor Φ is multiplied by the pressure gradient.
(22) (23) Cases of engineering applications The following material properties of metal W shaped ring are selected: E1=1.1×1011Pa, ν1=0.3, hardness H=3.4×108Pa. flange material is usually harder than the seal surface, so E2=2.1×1011Pa, ν2=0.3.
Because the dimensionless separation ho* impacts on the flow factor Φ.
When the dimensionless contact pressure P* is at high value, the surface roughness mainly affects the dimensionless leakage Q*.
Online since: November 2016
Authors: Kun Ming Zhao, Gang Song, Min Pan, Da Xin Ren, Rong Fan
The microstructures and mechanical properties of the sheets were tested, and the cause of the increase in sheet deformability was analyzed.
Moreover, the microstructures and mechanical properties of the Al alloy sheets before and after pretreatment following the stamping are analyzed.
The mechanical properties of the untreated sheet, welding joints, HAZs, and welding seams were tested, as shown in Figs. 2 (b)–(e).
However, the microstructure of the material is an intrinsic factor for determining material properties.
The mechanical properties of the sheet pretreated by arc welding are tested (Fig. 2), and the results are shown in Fig. 9.
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