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Consequently, the influence of the temperature in the contact input parameters and the material properties are discussed in detail and a good correlation with the published results is achieved.
As presented earlier, a significant alteration in the workpiece mechanical properties inside the nugget zone was caused by a fluctuation in the temperature.
Bhadeshia, "Recent advances in friction-stir welding–process, weldment structure and properties," Progress in Materials Science, vol. 53, pp. 980-1023, 2008
Balasubramanian, "Effect of tool pin profile on microstructure and tensile properties of friction stir welded dissimilar AA 6061–AA 5086 aluminium alloy joints," Defence Technology, vol. 11, pp. 174-184, 2015
Mills, Recommended values of thermophysical properties for selected commercial alloys: Woodhead Publishing, 2002

Oxidation of titanium particles can readily occur during heating due to the high affinity of titanium for oxygen, which can also affect its final properties.
In addition, erosion velocities of different materials can be calculated using Schmidt’s equation with factors, F1=4.8 and F2= 1.2.
The mechanical properties of the cold-sprayed titanium deposits are critical for commercial applications.
Koivuluoto, H., Lagerbom, J., Kylmälahti, M., and Vuoristo, P., Microstructure and Mechanical Properties of Low-Pressure Cold-Sprayed (LPCS) Coatings.
-J., and Lee, C., Nanostructure formation and its effects on the mechanical properties of kinetic sprayed titanium coating.

Formation of microstructure in Ni under equal-channel angular pressing (ECAP) and dynamic channel-angular pressing (DCAP), its thermal stability and diffusion properties of grain boundaries are investigated.
In the opinion of some researchers, many attractive properties of materials processed by different methods of severe plastic deformation are related to a specific state of their grain boundaries [4].
The kinetic properties of grain boundaries were determined via self-diffusion experiments carried out with the 63Ni radioisotope applied on a polished specimen surface.
The penetration profiles were determined by mechanical sectioning using a precision parallel grinder and a microbalance.
In an opinion of some researchers, the non-equilibrium boundaries are a source of long-range elastic stresses, which considerably affect mechanical properties [4].

As a key part feature of the machine, machine tool spindle’s performance would directly affect the processing performance of the whole machine.
As the machine tool spindle had the feature of high complexity, many influence factors and small sample size, the phenomenon of less failure data or “zero failure” was often produced when life test was used in the machine tool spindle.
The reliability of production was connected with its physical properties by reliability analysis based on performance degradation data, degradation data was get through the change of product performance parameters, the degradation of products was analyzed with degradation data, then the reliability of product was evaluated before product failure.
Then, it was used in mechanical.
References [1] HE ZhengJia: Developments and Thoughts on Operational Reliability Assessment of Mechanical Equipment (Journal of Mechanical Engineering, China 2014)

In the traditional mechanical polishing method, even though surface roughness is good after polishing, there still remains very slight polish mark and deformed layer.
It removes hydrogen which accelerates fatigue failures and bacterial growth, makes a shiny, lustrous surface, eliminates stress and decoration, improves adhesive properties, and brings about deburring effect.[2] Electropolishing principles The electropolishing based on an anodic dissolution process using an electrochemical reaction can produce both fine surface and stress-free surface.
Using electropolishing, the workpiece obtain excellent corrosion resistant by removing impurities, mechanical damaged layers, and material which form a nucleus of corrosion from the surface.
Electropolishing removes slag, burrs, scratches, heat affected zones, hydrogen of surface.
By combining these factors in further studies(machining parameter, electrode gap), better surface roughness and microburr removal effect would be achieved.To verify the microburr removal effect of electrolytic polishing, burrs were artificially created, and the sizes of the remaining burrs were measured after processing.

The properties analysis of caprock For qualified UGS, injection gas could be stored in the reservoir, and gas could be kept for a long-time as required, which would not escape through the penetration channel.
Mechanical properties of rock decided the stability of caprock. if the stability of the caprock could not reach the minimum standard required, gas would break the caprock and flowed out from reservoir in the UGS, and loss was great.
Low initial permeability, compact structure, and stable mechanical property kept the sealing ability of caprock stable during injection-production cycle, while the Loose caprock was the opposite.
Influencing factors analysis of sealing ability Lithology and mechanical characteristics of rock were the main factors influencing the sealing ability of caprock.
At present, the research on influencing factors was focused on building relation equation between sealing ability and effective stress[16].

Nonetheless, proper mineral or organic stabilizer dosages can reduce both issues by enhancing soil matrices' durability, mechanical properties, and hardening rate [6, 7].
The influence of liquid content is a critical factor that affects the printability of soil-cement matrices in 3D printing.
This strategy allows greater control of the matrix formulation regarding the pump working pressure since this depends on the matrix rheological properties and the pumping speed.
Although both height and width filaments are influenced by printing speed and water content, the most affected is the latter.
Future research works will evaluate the influence of cement addition on soil matrices' mechanical and rheological properties immediately after mixing and over time in the context of 3D printing.

The mechanical properties of the sheet are described in table 1.
Table 1 Mechanical property of SGARC 440 sheet Young`s modulus Tensile strength Yield Strength Poisson’s Ratio SGARC 440 0.207MPa 440MPa 250~360MPa 0.28 The simulation of the flexible roll forming was modeled using the commercial finite software DEFORM, and springback analysis was conducted using Solid works.
It is a common phenomenon in the sheet metal forming process and directly affects the dimensional accuracy of the stamping.
Therefore, systematic study of factors that influence springback can greatly impact product quality and production efficiency.
Archives of Civil and Mechanical Engineering 8, 31-38 [3] JuanLiao, XinXue, Myoung-GyuLee, Frederic Barlat, Jose Gracio.

The effects of the properties of the slurry were investigated on the γ-Al2O3 coating.
Such properties of the coating slurry as solid content and density of the aluminum sol were investigated on the loading of γ-Al2O3.
Results and Discussion Effect of slurry properties on γ-Al2O3 coating.
Thus, a L9 (33) orthogonal experiment was designed based on the other three factors.
The factors and levels advised were shown in Table 2.

As is known to us all, cutters have become an important part in modern manufacturing processes and significant factors which not only affect the machining quality, cost and productivity, but also influence energy consumption of the whole product machining process.
The calculation formula of Ct is shown as follow: (6) Where Ft is carbon emission factor [kgCO2/kg], Wt is tool mass, and Tt is Cutter total life.
Table.4 Calculation results Selected cutter End-face groove cutter 01 End-face groove cutter 03 End-face groove cutter 04 Carbon emission quantity Cp/g 186 202 194 Conclusions In order to deal with the problem that the traditional cutter selecting method for part machining cannot meet the requirements of modern green manufacturing satisfactorily, a novel cutter selecting method based on ontology and considering low-carbon influencing factors is proposed in the paper.
R. et al, Influence exerted by tool properties on the energy efficiency during drilling and turning operations.
Journal of Mechanical Engineering,49:pp87-95,2013.