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The percentage of porosities in the specimen has a direct impact on the mechanical properties and the qualities of the produced RT part, the DOE method (Montgomery, 1997 [1]) was proposed to identify an optimal process parameter setting that can achieve a low porosity percentage of components.
D: µm) are the four controlled factors.
The effects of the SLS variables on the physical and mechanical properties of specimens have been studied by researchers ( Kruth et al., 2004 [2]; Prabhu et al., 2005 [3]; Chao, P.Y. and Hwang, Y.D. (1997) [4]; Evans et al., 2005 [5]; Lin, T. and Chananda, B. (2004) [6]; Yao and Tseng, 2002 [7]).
Table 2 lists the experimental factors and the factor levels for the SLS process.
ANOVA results The Analysis of Variance (ANOVA) is conducted to find significant factors that affect the percentage of porosity in specimens of the SLS process.

However they have the disadvantage of solidifying in dendritic structure with large grain size which adversely affects their mechanical strength, toughness and surface quality.
However they solidify in dendritic structure with large grain size which adversely affects their mechanical characteristics, surface quality and impact toughness.
These alloys, which possess excellent casting and mechanical properties, have been increasingly used to replace traditional alloys such as aluminum, bronze, brass and cast iron in many industrial applications, [6].
Micro Alloys Flow stress (MPa)at strain= 20% Strain hardening index (n) Strength coefficient (K) MPa General equation of mechanical behavior ZA22 451 0.384 836.4 ϭ̅ =836.4ε̅0.384 ZA22-Ti-B 405 0.394 763.84 ϭ̅ =763.84ε̅0.394 ZA22-Mo 349 0.495 774.5 ϭ̅ =774.5ε̅0.495 ZA22-Ti-B-Mo 447 0.432 895.4 ϭ̅ =895.4ε̅0.432 Table 1: Mechanical properties of ZA22 and ZA22 grain refined by Ti-B Conclusions From the results obtained throughout this investigation the addition of Ti-B to ZA22 alone resulted in reduction of its grain size and modified its structure.
Kayali: The Effect of Manganese on the Microstructure and Mechanical Properties of Zinc–Aluminum Based ZA-8 Alloy  Journal of Material  Science Vol.42 (2007), p. 8298–8305

Since the discovery of high-temperature superconductivity of cuprate oxides, it has been clear that it is strongly affected by the oxygen content, which is also a crucial factor to determine other physical properties of high Tc superconductors.
Non-stoichiometric (interstitial) oxygen strongly influences the physical properties of various superconducting oxides, in particular by creating conducting holes.
The oxygen content is a crucial factor to determine the superconducting and other physical properties in SBCO high Tc superconductors.
The possible role of the interstitial oxygen in the determination of the structural and magnetic properties of the 2212 oxides is not generally considered.
Gremaud: Mechanical Spectroscopy (Trans Tech Publications, Zurich, 2001)

Analysis of the evolution of the mechanical properties (tensile and hardness) and the microstructure was done.
Strain per pass is the other major factor that affects grain refinement and homogeneity and the distribution of the mechanical properties.
Thus, the size of the grains and structural homogeneity are significantly affected by processing temperature and strains, affecting.
Fig. 9: A graph of ultimate strength and ductility versus die speed Conclusion From this study, it was found that the major factors affecting the MDF process were; strain per pass, and deformation temperature.
Chen et al., Effect of Temperature on the Mechanical Properties and Deformation Mechanism of a High Mn Steel With Composite Structure, Front.

If the high-frequency vibration occurs in the hydraulic shock, it is trend to leak oil and affect the formal work of hydraulic shock.
Actually, work condition and the external factors can directly affect the output parameters changes of the hydraulic shock.
The advantages of mechanical and electrical integration intelligent hydraulic shock Adaptability to the working conditions As the mechanical and electrical integration hydraulic shock has ability of recognizing the physical property, it can adjust the impact energy parameters automatically.
Given the physical property of work objects, the performance of optimization property function is the flexibility of objects.
It can control the property and the motion of the impact shock well.

However, achieving uniform mechanical properties and strong interfacial bonding between fibers and polymer matrices remains a major challenge [3].
This method is particularly useful for understanding the interactions between polymers and natural fibers in biocomposites, as it can reveal changes in molecular bonding due to processing or environmental factors.
Several compositions of polymer-to-fiber ratios were prepared to analyze how fiber content affects material properties.
Mechanical Properties of Filaments.
These functional groups play a crucial role in determining the material’s mechanical and thermal properties.

These factors include deformation rate, compression direction, the atomic potential employed, sample dimensions, etc.
Compression is an applied process to evaluate the mechanical properties of materials.
Mechanical methodologies are frequently used to evaluate material deformation properties [23].
These results are attributed to the material’s anisotropic behavior, which is influenced by specific atomic arrangements affecting its response to applied forces.
Suk, Effect of the nanotube radius and the volume fraction on the mechanical properties of carbon nanotube-reinforced aluminum metal matrix composites, Molecules. 26 (2021)

Additional material properties and clamping conditions are required for the mechanical analysis.
The effect of the metallurgical history on the mechanical analysis includes four factors [2].
The first factor is the influence of the metallurgical structure on the mechanical properties.
The mechanical material properties for the initial phase are given in Tables 3 to 6.
Slow weld Fast weld Length [mm] 8 5 Width [mm] 10 11 Penetration [mm] 3 2.5 Table 3 Thermal and mechanical properties [3].

shengjijin@sina.com Key words: Tunnel Group; Excavation; Mechanical Properties; Numerical Simulation Abstract: In order to analyze the different construction program under the tunnel surrounding rock stress, strain and plastic zone changes, we take water tunnel group of nuclear power plant as basic project and the application of software FLACIS3D numerical simulation.The results show that: During the tunnel excavation and support group process, the different rock tunnel construction program can produce different stress, displacement and plastic zone extended range of distribution and other aspects.To interval-type excavation program,although previously disturbing effect of the excavation of the tunnel construction and tunnel excavation of rock, it can generate less impact on the stability of surrounding rock.
Tab.1 Parameters values of materials mechanical Rock parameters Strongly weathered granite Moderately weathered granite Breezely weathered granite Strongly weathered Gneiss Moderately weathered Gneiss γ KN/m3 23.3 25.0 25.8 23.0 24.5 C(KPa) 60 400 1300 45 300 φ (°) 27 32 45 24 30 E (GPa) 2.50 8.00 15.80 1.50 4.00 µ 0.38 0.29 0.25 0.40 0.33 Tab.2 Concrete parameter values parameters EA(106 KN/m) EI(106 KN·m2/m) W(KN/m/m) µ Injection Concrete 4.4 0.18 8.4 0.15 which include E-modulus of elasticity, C-cohesion, φ-angle of friction, μ-Poisson's ratio, γ-heavy, w-gravity factor, EA-nominal rigidity, EI-bending stiffness. 4.
Tunnel Group Analysis of the Different Mechanical Properties of Excavation Three different excavation programs can be used in four water tunnel excavationsof the first phrase of the project.
For the latter excavation of the tunnel, the tunnel project area affected by the first digging, the stress can be released and the stability of the first excavation was less affected
References [1] Shengji Jin, Ning Li, Yongqin Rui,et al.Research on Mechanical Characteristics of Blasting Vibration during Tunnel Excavation[J].Journal of Shenyang Jianzhu University (Natural Science), 2012,28(1): 66-71.

The properties of CCTCM was evaluated by the surface modification effect(sediments in the non-polar medium) of calcium carbonate and the properties of polyethylene filled by CCTCM.
The weight ratio of grinding media to mineral feeding is one of the most important technology factors of wet ultra-fine grinding.
Compared with the calcium carbonate, PE filling CCTCM has better properties except critical stretching elongation.
This method overcomes the defects of the traditional modification method. 0 1 2 3 4 5 0 1 2 3 4 grinding time， h d50,um 0 1 2 3 4 5 specific surface area， m2/g(2) In the process of preparing CCTCM by mechano-activated modification method, grinding conditions, including the modification time, the mixing speed, the ratio of grinding media and the modification fineness, are essential factors affecting the modification effect and the performance of CCTCM
This is proved by the better physical properties and performances of packing polyethylene (PE) of CCTCM.