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Porosity is a crucial property in cold sprayed coatings.
If it can be beneficial for certain applications, e.g. lubricated contacts in tribology, it is generally detrimental for mechanical and anti-corrosion properties and for gas tightness of the coating.
It is thus important to understand what are the process variables affecting coating porosity and quantify their effects.
Flattening ratio versus mesh factor at initial temperature = 473 K and initial radius = 10 µm.
With mesh factor 0.1, jetting appeared at 473 K and 573 K for velocities above 600 m∙s-1.

We examined the safety after compared the four materials of SM45C used before, through structural analysis Fig. 1 Real appearance of using freight skate Skate is comprised of the Main Frame, Sub Frame, Roll, and Pin, analysis is performed on the cargo load weight affecting the Main Frame directly.
Compared that you want to replace the existing Main Frame with material SM45C, AA6061, AA7075, GFRP, CFRP for light weight of material, the result of each material and ensure safety and structural properties were examined in accordance with the light weight rate.
Table 1 shows the material property for each used in the analysis.
The SM45C and AA7075 are isotropic material, whereas CFRP, GFRP material are orthotropic analysis, which were performed by applying the orthotropic properties.
Lee, Impact Analysis on Energy Efficiency of Road Freight Transport Industry by Various Socio-economic Factors, KLR, Vol.21 (2011) 59-84

The metallurgical and mechanical properties of laser welded joints have been the subject of a considerable amount of experimental and numerical studies.
Due to the complex welded joint geometry and its three dimensional nature, it is very difficult to obtain governing equations for predicting the metallurgical and mechanical properties of laser welded joints.
The modelled volumetric heat source took into account a scale factor, and the shape factors given by the attenuation of the beam within the workpiece and the beam intensity distribution.
Process simulation An accurate knowledge of the laser welding process is important for predicting the metallurgical and mechanical properties of the laser welded structures.
The obtained results allow for determination both the material properties, and stress and strain state in the joint.

The paper evaluated the physical and mechanical properties of polyamide 6 subjected to microwave exposure.
The conducted studies show the possibility of developing target materials with unique properties using the known properties of CNTs and polymer matrix [15-17].
The physical and mechanical properties of the resulting composites were studied.
Tolstykh, Effect of microwave radiation on the formation of structure and mechanical properties of modified polymer –carbon materials in solid extension.
Amaratunga, Optical properties of polymer-nanotube composites.

Lightweight aggregates (expanded clay, foam) can improve physical-mechanical properties, as well as significantly reduce drying shrinkage [2]. 3.
Modified constructive quality factor K2.
It is necessary to note that the cement type as well as admixture type and amount affect the density of foamed concrete mixture.
Korjakins, Durability properties of high-performance foamed concrete, Procedia Eng. 172 (2017) 760-767
Kara, Cavitation treatment of nano and micro filler and its effect on the properties of UHPC, ultra-high performance concrete and nanotechnology in construction, Proceedings of the 3rd International Symposium on UHPC and Nanotechnology for High Performance Construction Materials. (2012) 87-92

Now the solution remesh, but it will seriously affect the accuracy of calculation [2]. 
Tab. 1 The material properties Name Tensile strength（MPa） Elastic modulus（GPa） Poisson's ratio Shear modulus（GPa） GCr15 δb=1617 E=207 μ=0.29 G=80.23 Simulation setup This study used Ansys Workbench and LS-DYNA software for simulation. 
The influence factors on the influence of EFGM.
Tab. 3 The simulation data of different Influence factors Influence factors 1.01 1.2 1.3 Diameter（mm） 20.17 20.2 20.22 Distance（mm） 21.3 20.9 20.6 Band width（mm） 0.7 0.7 0.6 Band thickness（mm） 1.9 1.9 1.7 Computation time (h) 13 16 20 At the time of changing the Influence factors of numerical, the simulation data of the ball will change.
But as shown in table.3, improved the Influence factors; calculation time was greatly improved, so at the time of simulation using EFGM, it was important to select suitable influence factors.

Introduction The drum washer’s Vibration has many hazards:Firstly,the Vibration easily lead to structural fatigue damage, or even an accident; Secondly, it will affect bearing life and the drive motor’s performance ; Thirdly, the vibration waste energy and has an effect on the effect of washing;Last but not least, the roar of vibration seriously affect the living environment and harmful to people’s health.
Therefore, we should reduce vibration. ⅠThe Comparison of The Modeling Method Commonly used methods of vibration analysis: Mechanical Impedance Method, this method is suitable for solving the single degree freedom system’s steady-state response.
Four-terminal parameter method Schematic Ⅲ Basic Structure of The Drum Washing Machine and The Mechanism of Vibration The drum washer’s three-dimensional solid model[2,3] of the outer tube: Important factor affecting the vibration : Internal drum, external drum, drive motors, pumps and damping devices (Suspension springs, damping devices and viscous damping buffer).
In the design of vibration reduction devices, antivibration block quality and the shape will be taken into account. reduce the elastic damping the damping factor suitably.
Design and research of modular machine tool and automatic processing technology, 10 (2008) 4-7 [5] Sang-Gil Park, Ho-San Kim, Hyoun-Jin Simand Jae-Eung Oh,Multi-dimensional spectral analysis of the noise contribution from adrum washer with a dehydrating condition,J.Journal of Mechanical Science and Technology, 22 (2008) 287-292

Over the service life, the environment surrounding of the pipelines will cause defect on the pipelines due to several factors and subsequently affect the service strength and its remaining service life [5-9].
In stage 1, geometries of the steel pipe, putty and composite were modelled which similar to the published data and the material properties is then modelled and assigned.
Mohd, Effects of soil properties on the corrosion progress of X70-carbon steel in tropical region, Ships Offshore Struc., 12, 3 (2017) 991-1003. https://doi.org/10.1080/17445302.2016.1266905 [5] M.
Lau, Characterization of mechanical and thermal properties of epoxy grouts for composite repair of steel pipelines, Mater.
Md Noor, Mechanical properties characterization and finite element analysis of epoxy grouts in repairing damaged pipeline, J.

In these regions, the main form of old goaf overburden rock activation is rock- structure instability caused by suffering external force and extrinsic factors and the resulting compaction of cracks and separation .
Thus, sliding instability depends on the mechanical properties of key block and neighboring block, the value of W/T and the size of additional load such as surface structures Rotational instability of the key rock.With the rotary of the first rock, horizontal thrust T increases leading to the breaking and instability of the corner blocks, which is manifested as rotary-deformation instability.
Equation (5) shows that, the main factors that affect the size of the rotary angle are thickness and length of rock( is equivalent to the fracture step of the original top in mining process, and is equivalent to once caving thickness of the original top or the thickness of a certain overlying hard rock.)
Thus, rotary instability relate with the mechanical properties of key block and neighboring block and the thickness-length ratio h / l of the exposed hanging block .
From mechanical analysis of masonry beam structure important conclusions are obtained that : sliding instability depends primarily on the mechanical properties of key block and neighboring block, the value of W/T and the size of additional load such as surface structures, and rotary instability relate with the mechanical properties of key block and neighboring block and the thickness-length ratio h / l of the exposed hanging block.

The influence of the Co addition and synthesis route on desorption properties of MgH2 were investigated.
These properties make hydrogen a potential fuel for energy consumption but the major problem that has to be solved is the way of hydrogen storage.
Powerful ways of improving the hydrogen sorption properties are high-energy ball milling of hydrides with a suitable catalyst.
Recently, Bobet et al. have tried to improve the H2-sorption properties of Mg by reactive mechanical milling with Co and CoO.
We examined the combined effect of the following factors: milling intensity, amount of catalyst, degree of homogenisation, and particle size of Co, on the hydrogen desorption properties.