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With the sintering temperature, the sintered body was investigated with shrinkage, crystal phases, thermal properties, and mechanical properties.
The residual glass affects disadvantages in LTCC with low strength and poor microwave properties [2-6].
With the sintering temperature, the sintered body was investigated with shrinkage, crystal phases, thermal properties, and mechanical properties.
The porosity is closely related to the mechanical properties.
The results suggest that improving the mechanical properties may lower the porosity and optimal crystal phase.

The material constitutive model Johnson-Cook model is a constitutive Model with good properties, which is used to describe under the condition of the large deformation, high strain rate effect and temperature, especially the model is widely used in the transient and dynamic simulation.
Grid tumble quality directly affect the precision and solve the time.
Figure 1 Mesh of workpiece and cutter Material properties In this article, the cutting tool is set to the rigid body.
Cutting tool material choose carbide cutter (WC), its material properties as shown in table 1.
China Mechanical Engineering,2007,18（6）,746-751

By analyzing the force of every particle in the system, classical or quantum mechanical method is used to solve the position and velocity of individual particles in the system for a certain time, and to determine the state of motion of the particle, then to calculate the structure and properties of the system [1].
It is widely found that the material's physical, mechanical and other properties are both closely related to its macroscopic state and microstructure [2].
Actually, in poly atomic systems, a different position of atoms will affect a range of space distribution of the electron cloud and the interaction between the other atoms.
Majored in mechanical engineering, Tsinghua University, 2003 [3] Liu W K, Karpov E G, Zhang S, et al.
Thermo dynamical properties of Lennard-Jones Molecules.

On the contrary, finite element simulation of turn-milling process can avoid these shortcomings effectively, and also can get the material mechanical properties and physical properties, which is difficult for experiments.
Fig.1 Turn-milling schematic The cutting speed is determined by rotational speed of milling-tool and workpiece, in which the milling-tool rotational speed is the main factor.
(1) Material Constitutive Model and Parameters The Johnson-Cook model was adopted as the material model, and the equivalent flow stress is defined as follows, The material of workpiece is aluminum A357, a kind of widely used alloy due to good casting properties, and good mechanical properties, physical properties, corrosion resistance and mechanical machining properties after modification and heat treatment.
It is the same in turn-milling process, the cutting depth greatly determines the cutting force in turn-milling, and then in turn affects the cutting heat, and further affects the tool wear, workpiece surface quality and machining accuracy.
[5] Kitahara.T, Ishikawa.Y,et al: Development of a Micro-Lathe, Mechanical Engineering Lab Report Vol. 50 (1996), p.117-123

We have developed the original theory and procedures to simulate the electromechanical properties in doped semiconductors by use of electronic band structure [4,5].
The conductive properties of ZnO nanowire models can be discussed in terms of their electronic band structures.
A novel original procedure to simulate the piezoresistive properties has been developed on the basis of first-principles calculation [4,5].
Simulation results of the gauge factors and the longitudinal piezoresistance coefficients are shown in Table 3.
Temperature dependence of gauge factors for p-typr (ZnO)24 models simulated by 1% tensile strains.

Introduction Shear connection plays an important role in the mechanical performance of composite steel and concrete structures.
In order to accurately understand the mechanical properties of shear studs in composite beams, experimental study was carried out.
In the design specifications, the reduction factor is calculated by the sizes of troughs of the profiled sheeting.
But the heat affected zone is still the weak area.
Additional welding can enhance the heat-affected zone, ensuring the welding completely reliable

Both the gate aperture and the distance between gate electrode and CNTs' apex have crucial effect on field enhancement factors of normal-gate structure and under-gate structure.
Carbon nanotube has a unique quasi one-dimensional structure, excellent mechanical properties, electrical properties, chemical stability and thermal stability.
Moreover, the CNTs emitter has many unique properties such as great aspect ratio, small work function and high conductivity.
Different geometric parameters such as the position of gate and gate aperture affect the field emission properties, including field enhancement factor, emission current density and threshold voltage, which is investigated in this paper.
The gate electrode's position and gate aperture's effects on CNTs' field enhancement properties were analyzed.

In this work plasma surface modification approach was used to improve mechanical properties by synthesis of composite layer structure on a pure titanium surface.
Introduction Specific properties of titanium and its alloys such as excellent corrosion resistance high strength to weight ratio, high temperature mechanical properties are readily used for a structural components in aerospace, chemical, petrochemical and marine industries [1,2].
Successful osseointegration of implant material and proper functioning after orthopaedic and trauma surgery, depends from various surface factors.
Fast cool-down and chemical composition change with the obtain fine-grain structure, results in mechanical and wear properties improvement.
Mechanical properties improvement for obtained layers may contribute in materials longer use results from galling and spallation suppression.

New-to-old concrete freeze-thawing durability affects the safety and normal service of structure.
Present studies mainly research bonding properties affected by different factors, such as the surface roughness [1,2], the different binders [3], the age of concrete [4], the strength of both layers [5,6] and so on.
Among them the roughness of substrate surface is one of the most important factors.
Huicai Xie et al.[11] thought that mechanical interlocking is usually a dominant bonding force between new and old concrete.
Analysis of transformation conditions and influence factors of uni-body and bi-body models under axial compression [J].Rock and Soil Mechanics (in Chinese), Vol. 32, No.5, 1297-1302, 2011

This study was made only for the finish stages, due to the enormous importance that a good surface quality has over such important properties as, in the case of ceramic materials: corrosion, fatigue and wear resistance.
In this case, a 2 5-1 fractional factorial design, whose resolution is V, has been selected due to the number of factors considered in the study.
Design Factors and Roughness Parameters Considered.
The above-mentioned factors were selected as design factors in the present study.
As can be seen, all the factors are significant for the confidence level used.