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A linear differential equation is adopted to account for the complexity of honeycomb paperboard properties under static and dynamic conditions.
The realization of the potential of honeycomb paperboard as an important cushion material has inspired a close scrutiny of its properties.
Experiment results show paper honeycomb structure factors, including honeycomb cell-wall thickness and length, honeycomb core thickness, and liner material, have a certain effect on the impact behavior of paper honeycomb sandwich panels.
[2] Wang Dongmei, Wang Zhiwei, Experimental investigation into the cushioning properties of honeycomb paperboard.
[9] Zhu Dapeng, Zhou Shisheng, Modeling and parameters identification of dynamic properties of paper honeycomb panel. 2008 International Conference on Computer Science and Software Engineering.

Effect of Plasma Spraying Gas on Microstructure and Properties of 95vol.
To determine the effect of plasma spraying gas on microstructure and mechanical properties of Al2O3-SiC nanocomposite coatings, primary Ar gas and secondary H2 gas were chosen, which have an effect on temperature and velocity of the flying powders at the time of impacting on substrate.
The particular interest in nanocomposite powders has been driven by reports that the addition of nanosize SiC particles into an Al2O3 matrix can significantly improve the mechanical properties over those of monolithic Al2O3 [1-2].
The properties of ceramics are in general controlled by the microstructure and by the processing.
Summary Ar gas significantly affected plasma sprayed 95vol%Al2O3-5vol.

By analyzing the dynamic and the static properties for the platform with ANSYS software and comparing the designs of platforms, the design of the base motion platform has been completed.
For precision motion platform, the quality of the dynamic properties of the structure is one of the key factors to the processing performance.
Taking into account the importance of the working band of the platform and features of the first few modes, it is better to analyze the frequency of the first order modal and mode which affect the rack.
Because the degree of micro feed is so minute that the precise is affected by the minute vibration of base.
The size of the relative displacement caused by the static deformation of beams seriously affected the accuracy.

Lignin from bioethanol waste is thought to improve the physical and mechanical properties of mortar as well as lignosulfonate from black liquor. mechanical properties of mortar as well as lignosulfonate from black liquor [8].
The main objective of this study was to determine the effect of lignin as a biopolymer admixture on the characteristics of mortar both physical properties and mechanical properties.
It's important to consider ecological factors when choosing materials.
The shape and size of the test specimens affect the compressive strength of mortar, besides that, many factors can affect the compressive strength of mortar including cement water factor, mortar age, sand gradation, and temperature.
Conclusion From the results of the research that has been done, lignin as an admixture to the mortar mixture makes changes to the characteristics of mortar, both physical properties and mechanical properties.

Its special organizational structure and mechanical and physical properties bring many problems to milling process.
Orthogonal experiment parameters with four factors and four levels are selected based on the C/C composite forming structure characteristics, combining the purpose of this test.
The four factors include milling depth ap, milling speed V, milling width ae, and feed per tooth fz.
The level factors of milling parameters are shown in Table 1.
Almansa: Carbon fiber／carbon disc brakes：physical、mechanical and chemical properties.

Liu’s study [12] suggested that liquid viscosity influenced the wall shear stress, thus affecting corrosion rate.
The establishment of mechanical models needs to have a clear and deep understanding of corrosion mechanism, diffusion micro mechanism, and critical controlling factors.
As crude oil is a mixture of varied organic compounds, of which chemical compositions and physical properties are very complex.
Crude oil produced by different fields differs quite a bit in compositions and properties.
The factors used to study the impact of crude oil on corrosion includes oil’s composition, water content, salt content (conductivity), viscosity properties, sulfur content, total acid number (TAN), wettability etc.

Thermal analysis study on packaging materials of Power-LED LIU Yi-Bing Mechanical and electric department, Shao yang vocational &technical college, Shao yang, Hunan 422000, China Keywords: power-LED, ANSYS, bonding materials, substrate material Abstract: In this paper, a high power- LED package model has been built.
Fig 1：The internal structure and cooling channel of power type LED According to the theory of heat transfer, the material properties relating to thermal analysis include: thermal conductivity, specific heat capacity, enthalpy, heat transfer coefficient, radiation coefficient, heat density.
For the finite element division, taking into account the convection heat transfer between the outer surface of the device and the surrounding air, the convective heat transfer coefficient h is a constant (in the calculation of the value of 5W/m2k), set the boundary conditions for: In the transient process, system temperature, heat flux, boundary conditions may change over time; transient balance in matrix form is expressed as: The matrix elements are: In which - In the unit time in the unit volume the heat source heat of formation, - is vertical to the superficial heat flow, - respectively be the boundary and the environment temperature, - the specific heat matrix, - the unit node temperature the vector which causes to the time, - the conduction matrix, including the thermal conductivity, the counter-flow coefficient, the emissivity and the form factor, - the unit node temperature vector, - the node flow rate of heat vector, including the heat of formation, is the unit
Power- LED FEM thermal analysis on bonding materials Die bonding materials is an important factor affecting the power type LED thermal conductivity properties, if not handled properly, it will make LED thermal resistance too large, leading to a high junction temperature under the rated operating conditions, a decrease of the device optical efficiency and lower reliability [1].
Finite element analysis on power- LED package substratematerials Power-LED substrate materials is an important factor affecting the characteristics of the thermal conductivity, and the radiating substrate materials must have high electrical insulation properties, high stability, high thermal conductivity, coefficient of thermal expansion similar to the chip as well as the smoothness and high strength [2].

Abstract: For the high-speed machining aero engine casing hole, according to the principle of metal forming and the characteristic of metal cutting plane strain, with selecting some key physical factors of the cutter - chip contact friction and abrasion model, the Cartesian orthogonal cutting model of aero engine casing hole was established by using the Deform, a sort of finite element analysis software.
So cutting temperature directly affects the tool life and the precision of work piece [9], and chosen as the standard to select cutting parameters.
Due to difficult cutting properties of high-temperature alloys, the cutting zone has a high temperature.
Mechanical analysis of tool.
Due to the high temperature alloys containing a lot of intermetallic compounds, which makes the mechanical properties and heat-resistant quality of the material change great.

The residual stress of machined surface is an important factor affecting the fatigue strength of parts.
Residual stress is a very complex issue, process parameters, the tool geometry parameters, material matched and processing factors all affect the residual stress.
(2) When cutting the 45# steel, with the increase of cutting depth, the trends affecting of cutting force and cutting temperature of the WF and QF Groove cutting inserts are same, but the margin of cutting force and cutting temperature of the QF cutting inserts is larger than the WF.
International Journal of Mechanical Sciences. 2005, 47:1611-1628
Mechanical Engineers and Engineering Manufacture 2002,216 (1):47-54

The main factors affecting the formation of cold cracks are the high cooling rate of the welded joint [4–6], the presence of high tensile residual stresses and hydrogen in it [7–9], as well as the preheating temperature [10–11] and the mechanical heterogeneity of the welded joint [12–14].
Mechanical properties of steel 10G2FBU according to technical regulations 14-101-725-2009.
The tendency to form cold cracks is influenced by the chemical composition of the main and welding materials, as well as the structure of the weld metal and the heat-affected zone.
Asaran, Mechanical and structural properties of similar and dissimilar steel joints, Mater Character, 43 (1999) 311-318
Toyoda, Size effect on static tensile properties of Welded joints including of soft interlayers, X Jap.