Search results

This paper aims to make a contribution to the understanding of the wear mechanisms of the abrasive belt and its influence factors.
The actual grinding depth is influenced by elastic deformation of contact roller and belt, abrasive wear, blade and machine tool stiffness and other factors.
The physical relationship of grinding process is difficult to be precisely described because there are many factors influence surface roughness [7,8].
(a) a’p=0.3mm (b) a’p=0.6mm (c) a’p=0.9mm Fig.7 Surface wear topography in different theoretical grinding depth Conclusions (1)To study the factors affecting grinding accuracy in the process of grinding blades, the theoretical model of belt grinding accuracy was established
It has revealed that the combination properties are superior to zirconia.

Arc heat source model of GTAW under the magnetic field was established, also consider physical properties of materials varying with the temperature and the influence transformation, through the method of killing or activating elements treatment such as melting or solidification by welding pool, 3D FEM simulation analysis for the temperature gradient and residual stress size distribution to GTAW welded joints compared to on magnetic field or not.
Indirect approach to calculation of residual stress, first perform non-linear transient thermal analysis, transient thermal analysis will be added to the temperature as the body structure of the load stress field solution. 2.1 Geometric solid modeling and finite element mesh Q235 steel specimen material (size 100mm×70mm×2mm), the temperature-dependent of material properties in Table 1 [4], using the GTAW without filler metal plate butt welding, welding specifications in Table 2.
Table 1 Material thermo-physical and mechanical properties T [℃{TTP}8451 ] l [W/m·℃{TTP}8451 ] c [J/kg·℃{TTP}8451 ] ×10-5a [1/℃{TTP}8451 ] ×105E [Mpa] m s [Mpa] 20 50 460 1.10 2.05 0.28 220 500 40 530 1.39 1.5 0.31 130 750 27 675 1.48 0.7 0.35 40 1000 30 670 1.34 0.2 0.4 25 Where T is temperature, λ is thermal conductivity, c is Specific heat, α is thermal expansion coefficient, E is the elastic modulus, μ is the Poisson ratio, σ is the yield strength.
Compared with no external magnetic field, the maximum residual stress decreased by 12.3% and the maximum transverse residual stress decreased by 13.6%, and the numerical simulation are basically consistent with the actual measured value. 4 Conclusion 1) Established an adscititious magnetic field GTAW arc heat source model, taking into account the physical properties of materials change with temperature and phase transformation, through the method of killing or activating elements treatment such as melting or solidification by welding pool, 3D FEM simulation analysis for the temperature gradient and residual stress size distribution to GTAW welded joints compared to on magnetic field or not, also have blind hole measuring method measure welding residual stress, Test measurement and simulation values were basically consistent. 2) Process after applied magnetic field, the maximum weld temperature, temperature gradient and heat concentration factors are reduced, and the maximum longitudinal
China Mechanical Engineering, Vol. 13(2002), p. 1876.

General Properties Polymeric membranes have several properties, such as mechanical, thermal, physical, chemical, biological, among others, and may vary according to the application of the membrane.
Tensile strength and elongation are the main mechanical properties of the biomembranes.
The mechanical tests are performed according to ASTM D638, 2002 standard, which determines the mechanical properties of films/thin membranes [17].
The permeability coefficient also depends on factors such as crystallinity, density, crosslinking, addition of additives as plasticizers, and sensitivity to moisture and temperature.
Yoo, The use of treatments to enhance the mechanical properties of electrospun poly(ε-caprolactone) scaffolds, Biomaterials. 29 (2008) 1422-1430.

It is believed that the supramolecular structure is responsible for physical properties, the microstructure for mechanical properties, and the macrostructure for the coke thermal stability.
The coke molecular and supramolecular structure organization and the impurities presence determine its properties as a semiconductor, which allows us to evaluate coke some properties based on its resistivity.
Both factors contribute to a decrease in the lump coke electrical resistivity.
The electrical resistivity of a coke heap depends on same parameters as for a coke piece, but additionally factors such as fractional composition, contact density between individual granules, and the contact surface area appear.
Emen, Formation of fire dretardant properties in elastic silica coatings for textile materials.

It has been well known that APBs between dissociated superpartial dislocations are responsible for characteristic mechanical properties such as planar slip at ambient temperature, anomalous temperature dependence of yield stress and abnormal strain-rate dependence of flow stress [1].
Furthermore, recently, it is being revealed that thermal APBs, i.e. antiphase domain boundaries (APDBs) introduced during the course of ordering transformation, significantly affect the mechanical properties of some intermetallic compounds.
APDBs in Fe3Al have been known to affect the tensile properties [4].
Because those properties are sensitive to the density of APDBs and APD size, it is important to control APD size appropriately for optimization of mechanical properties.
Accordingly, in the present study, we evaluated the contributions of those factors on the migration of D03-APB in the Al-rich and the stoichiometric Fe3Al.

These FEA studies aim to evaluate the warpage of FOWLP for various manufacturing processes and identify influencing factors.
Materials and Methods Fan-out wafer-level package geometry and material properties.
Table 1 shows all the thermo-mechanical material properties necessary for the FEA simulation in ANSYS software.
Thermo-mechanical properties of FOWLP materials [5].
Dimagiba, Finite element analysis on the factors affecting die crack propagation in BGA under thermo-mechanical loading, Engineering Failure Analysis 116 (2020).

(2) The mechanical properties of rock.
It is the rock properties shown under the mechanical external force.
It includes the strength properties (tensile, bending, shear, press four kinds of disturbance intensity), the deformation characteristics (elastic, brittle, plastic), and surface properties (hardness, abrasive)
(3) Non-mechanical properties of rock.
There are many factors to affect the risk of directional drilling construction; in general, there are three aspects of directional drilling construction risk: the owners passed on the construction risk, security risk, the risk of construction technology.

Several factors impact the MRR, including feed rate, cutting speed, and depth of cut.
Previously, a factorial approach was used to systematically investigate the effects of these factors on the specific power consumption [6].
Cutting speed was identified as the most significant factor affecting MRR, as shown in Table 4 and signal-to-noise ratio plots.
The rake angle showed no significant effect on MRR, possibly due to specific material properties or cutting conditions that minimize its influence on chip formation [3].
Depth of cut emerged as the most critical factor affecting cutting power consumption, followed by cutting speed, feed rate, and rake angle.

These optimized recipes showed positive influence mainly in the long-term on mechanical properties.
Therefore, they show different properties.
These characteristics are variable and depend on many factors, such as the type, origin, and the type of combustion, its technology or the type of fly ash separation.
Also, it was concluded, that the substitution by secondary raw materials have a very positive influence on the long-term mechanical properties.
Furthermore, the set of monitored physical-mechanical properties will be extended and the chemical resistance of the new designed recipes will be tested.

In order to apply plastic in such cases, plastic parts must achieve the same mechanical properties as metallic ones.
In numerical representation, influence of these factors was described as a direction dependent Young's modulus and Poisson ratio of every structural mesh element.
Its mechanical properties are listed in Table 1.
The anisotropic mechanical properties assigned to each element were described by 21 specific constants.
Kwon, Morphology and Mechanical Properties of Injection Molded Articles with Weld-Lines.