Search results

Milling Force Modeling and Experimental Research of 300M Ultra High Strength Steel Zhang Huiping1a, Wang Chongxun1b,Lai Yinan1c,Zheng Wenjuan1d 1College of Mechanical and Power Engineering,Harbin University of Science and Technology,Harbin 150080, China a zhping302@163.com, b64744591@qq.com, c laiyinan@126.com, d1013864774@qq.com Keywords: 300M ultra high strength steel; Milling experiment; Milling force; Modeling and analysis Abstract: 300M ultra high strength steel, a new type of steel with broad prospects for development, has good mechanical properties, and is widely used for manufacture of aircraft landing gear.
Secondly, the influence level of experimental factors is compared by orthogonal experiment.
Milling force in milling process is a key factor to affect the processing efficiency, tool life and surface quality, so the research of 300M ultra high strength steel milling force variation has an extremely important significance.
Common empirical model form of milling forces is exponential formula, such as type 1： (1) Where CF is determined by the machined metal and the cutting condition factors; ap is the depth of cut, n is the spindle speed, f is the feed rate, ae is cut width; b1, b2, b3, b4 are four factors that affect the milling force index.
The experimental parameters and results of single factors experiment are taken into the regression equation to verify the accuracy of the regression equation.

Besides the pressing method, other factors can affect particleboard properties.
Between the two factors used in this research, press temperature had more clear effect in thickness swelling and water absorption properties.
The increase in ester linkage that being formed positively influenced board mechanical properties [8, 10].
Each factor used in this research gave different effect to particleboard properties.
The addition of starch tended to negatively affect the physical properties of the boards, such as thickness swelling and water absorption but positively affected mechanical properties of the boards, such as internal bond strength and bending strength.

Through compression molding, the effects of some parameters on material’s mechanical properties were studied to optimize the technical process, including the ratio of wood fiber to starch, the content of adhesive and foaming agent.
The principal factors were that the ratio of wood fiber to starch was 1:1,1:2,2:3, the content of foaming agent was 0%-9%, the content of PVA was 6%-12%.
The product size was 150*150*30mm.The experiment were two four-level and one three-level factors, and the mixed level uniform design U12（3*42）was adopted in it.
Density [g/cm3] Fig.2 Effects of Factors on Density Compressive strength[MPa] Fig.3 Effects of Factors on Compressive Strength Test optimization and verification.
The fitted regression mathematical model can significantly predict main physical and mechanical properties of cushion packaging materials.

Laboratory analysis for investigating the impact of compaction on the properties of pervious concrete mixtures for road pavements.
Influence of compaction energy on mechanical and functional properties of pervious concrete mixtures.
However, additional information is needed about how pervious concrete properties change according to the compaction energy applied to the freshly mixed material and how the variation of percentage of same components of the mixture will affect the long-term behavior of the material.
Jiang, Experimental study on properties of pervious concrete pavement materials.
Wang, Effects of some factors on properties of porous pervious concrete, Journal of Building Materials 8 (2005) 513-519

The quality of pig iron from the point of view of the customer, that is steel plant, is one of main factors affecting the quality and cost of steel production.
Basic quality tools: statistical methods, control charts and the factors of qualitative ability of the process were used in the analysis.
From the point of view of the steelworks, this element should be present in limited level, which is dictated by the fact that the high phosphorus content [5]: - processing of pig iron in the oxygen converter requires a longer melting by downloading slag, - worsen the mechanical properties of steel.
In addition, the values of factors of qualitative ability of the process were determined.
SUMMARY Quality is one of the fundamental factors of choice of the product by the customer.

The influence factors of perform porosity were investigated, including process pressure and raw materials.
The average porosity of porous performs with different type of diamond Open porosity and the influencing factors.
On the contrary, extremely large open porosity will lead to a great amount of unreacted Si remain in the matrix [18], which will result in the sharp decline of the thermal conductivity and mechanical properties of the Diamond/SiC composites.
Main factors effected the open porosity of perform were pressing pressure as well as content, morphology and particle size of diamond.
Zhang, et al., Mechanical and tribological properties of 3D carbon fiber rein- forced SiC composites prepared by liquid silicon infiltration, Key Eng.

More investigations on such biocomposites are needed to improve fiber-matrix interactions. 1.5 Factors Influencing Composite Properties.
Many factors combine to affect the properties of a composite material; ultimately, however, the properties of a composite are dictated by the intrinsic properties of the constituents.
How these properties are harnessed to reinforce a composite material is largely governed by the same factors that affect other fibre composite materials, namely the fibre architecture and the fibre-matrix interface.
Nevertheless, the properties of a biocomposite may be controlled and indeed enhanced by altering those factors that control composite properties, namely fibre architecture and the fibre-matrix interface.
Properties of Biocomposites: Mechanical Properties.

Impact properties of composites are mostly affected by the mechanism of energy absorption and dissipation, which contributes to the fracture toughness of composite materials.
From Table 2, it is observed that the main factors as well as the interaction of the factors significantly affected the responses, showing P-values lower than 0.05.
For ANOVA, p ≤ 0.05 indicates that the factor (or interaction of factors) significantly affects the considered response within a 95% confidence level.
When the interaction among factors is significant, such interaction should be considered instead of the individual factors.
Tsai, Carbon fiber reinforced phenolic Resin/Silica ceramer composites-processing, mechanical and thermal properties, Polym.

Introduction Fabric shape style refer to fabric appearance effect under certain forming conditions due to gravity [1].The traditional evaluation methods generally characterized by mechanical properties, firstly, it usually used static and dynamic drape tester or fabric style instrument to measure physical and mechanical property indicators, then combined with the main factor analysis, regression analysis, fuzzy clustering, grey correlation, artificial neural network and other methods to establish correlation between index data and fabric shape style, investigated the main factors influencing fabric shape style.
In the 1970 s, the study of correlation between mechanical properties and fabric style continuous developed and improved.
Mechanics of elastic performance of texile materials, Part Ⅴ: Aa study of the factors affecting the drape of fabrics -The development of a drape meter.Textile Res, 1950(08)
Relationship between drape-ability and mechanical properties of fabrics [J].
Relation between drape coefficients and mechanical properties of fabrics [J].

The investigation and comparison on mechanical properties of the green shotcrete soil using the mineral additive are conducted.
Material Properties of Field Applied Vegetation Soil.
Mechanical Properties of Green Shotcrete Soil.
The properties of the green shotcrete soil were evaluated for 5 mixing types.
Garcı´a-Fayos, Factors Controlling Vegetation Establishment and Water Erosion on Motorway Slopes in Valencia, Spain, Restoration ecology: J.