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The main advantage of hardness tests among the mechanical test methods are simplicity of the measurement and the small peace of sample required for the test, which rendered the technique the most widely used method for characterising of the mechanical properties of materials.
These differences offer an additional source of information on materials properties.
The real resolution is determined by other factors, such as surface energy, indenter rounding and indent shape differences.
Conclusion The need for accurate data for the mechanical properties of thin layers is the driving force for decreasing the impression dimensions in hardness tests.
M.: Philosophical Magazine A-Physics of Condensed Matter Defects & Mechanical Properties 79. (1999) 2979 - 3000 [13] Hasche, K., Herrmann, K., Pohlenz, F., Thiele, K.: Meas Sci Technol 9. (1998) 1082 - 1086 [14] Nagy, P., Juhasz, A., Kalman, E.: Mikrochimica Acta 132. (2000) 457 - 460 [15] Seo,M., Chiba,M., Suzuki,K.: J, Electroanal Chem 473. (1999) 49-53 [16] Jager, I.

Reservoir properties, fluid properties has great ambiguous for the effect of CO2 huff and puff, therefore, the fuzzy comprehensive evaluation method to be used for the suitability of the candidate evaluation wells.
The weight ratio of evaluation index is very important in the evaluation process, to avoid the influence of subjective factors, so we use entropy method to determine the index weight ratio.
Entropy method can effectively avoid the influence of subjective factors, making the weights ratio more reasonable. 2 Fuzzy Comprehensive Evaluations Fuzzy comprehensive evaluation can be divided into the following five steps [6, 7]: (1)Determining factor set: ; (2)Determining judgment Sets: ; (3)Determining the fuzzy evaluation matrix: ; (4)For a given weight W, Computing fuzzy result by fuzzy arithmetic model: (9) (5)Using the maximum membership principle, we can conclude that the comprehensive evaluation results. 3 Examples of calculation 3.1 Evaluation of classification According to the factors of affecting CO2 Huff and Puff effect, total 12 indicators have participated in fuzzy comprehensive judgment, namely, Effective thickness of reservoir(Hd), Horizontal well length(L), Reservoir temperature(T),reservoir pressure(P),oil viscosity(μ),oil density (ρ), reservoir heterogeneity(Vk), oil saturation (So)
The fuzzy comprehensive evaluation method based on entropy for mechanical properties of the product [J].
Based on the entropy weight method to determining the weight of the factors of affecting food production [J].

The pros and cons of the five rubbers are analyzed in friction and wear properties of the above experimental.
TPU is the most versatile engineering thermoplastics with elastomeric properties.
The mechanical properties, rheological properties, resistance to oil, solvent properties and electrical properties of these two kinds of blends are investigated.
The temperature change has become a major factor which influences the fluctuations in the friction coefficient, but the determinants of the coefficient of friction are the material properties.
An investigation of mechanical and rheological properties of PVC/PVC blends: influence of anhydride additives, mixing procedure and PVC form.

gkamonpan.p@cmu.ac.th Keywords: Ferroelectric properties, PZT, BCZT Abstract.
BCZT ceramic system which presents a high dielectric and high mechanical properties [5-6] with low Curie temperature (TC ~ 120 °C).
The ferroelectric properties were measured using a Sawyer Tower circuit.
This can affect to the decrease in remanent polarization (Pr).
Physical and Ferroelectric properties of (1-x)PZT- xBCZT ceramics.

RFW, widely used in the aerospace and automotive industries, is known for producing strong welds with minimal heat-affected zones (HAZ).
This alloy, primarily composed of aluminum, magnesium, and silicon, offers mechanical properties suited for structural applications.
Accurately capturing the thermal-mechanical changes throughout the welding process is essential.
Key factors like axial shortening, temperature distribution, and stress distribution were well captured, demonstrating the model’s reliability in reproducing physical conditions.
Effects of rotational speed on the mechanical properties and performance of AA6061-T6 aluminium alloy in similar RFW. 

Because of the volume non-uniformity, residual stresses can significantly affect the crack front edge evolution [18].
Also the crack closure parameter is influenced by stress ratio, the presence of aggressive environment, surface treatment and other factors.
In this case the influence of all factors, except for plasticity was neglected.
The results of analysis of fatigue properties of the fillet-welded joint when the crack assumed initiated at the cavity due to incomplete penetration, altogether with the experimental findings are presented in Fig. 3.
A finite element technique for the investigation of the shape development of planar cracks with initially irregular profiles (1990) International journal of mechanical science, 32 (3), pp. 243-251

Apart from the exposure and their frequency, there are other factors that influence the occurrence of these disorders, such as: the environment, the health status, stature, weight and sex [1-5].
Fig. 3 Mechanical hand-arm system.
Ensembles 2, 3, and 4, and subsequently for the vibration attenuator device ensemble 5 (Fig. 4a and Fig. 5a), comply with the same anthropometric properties from table 3, as in the mechanical model proposed by figure 3, respectively the Body Blocks with the masses m1, m2, m3 and subsequently m4 for the vibration attenuator device.
In time, all these symptoms can degenerate in occupational disorders, such as VWF and other professional illnesses (affecting the nervous and circulatory systems, spine, hearing and sight, etc.).
Fong, et. al.: Elastic and viscoelastic properties of porcine subdermal fat using MRI and inverse FEA Biomech Model Mechanobiol. 9: DOI 10.1007/s10237-010-0207-9.

Regardless of the load-bearing and non load-bearing wall, both of them are required to have sufficient shock strength and good fire, insulation, seismic, sound insulation, impermeability and other properties, and also can achieve a decorative effect.
Material selection cannot be tested one by one, together with the different wall pressure, and whether the preparation is reasonable or not, all these aspects directly affect the quality and cost of the project.
We call such factors Evaluation Indexes.
In our case, since there are so many factors influences the selection of wall material, and there are strong connections between the factors, the most convenient way to quantify the weights is the AHP method.
Table 7 Evaluation Indexes of Wall Materials* Indexes Material 1 Material 2 Material 3 Material 4 Material 5 Production Technology Level 110 121 119 108 109 Application Technology Level 98 85 98 101 103 Physical Property 106 105 120 132 133 Mechanical Property 101 98 83 94 108 Durability 99 89 107 89 90 Applicability 78 69 95 87 88 Resource Consumption 105 68 90 120 108 Energy Consumption 97 96 107 88 93 Waste Discharge 100 103 86 79 77 Environmental Benefit 87 78 67 89 79 Production Economic Performance 125 128 109 110 107 Application Economic Performance 78 69 87 88 79 *The average index for each wall material is 100.

In such a scenario, Al alloy components (bonnets, doors, front structure, wings, crash elements and bumpers) are massively adopted since able to reach a suitable combination of improved surface quality and mechanical properties [2].
Finite element (FE) simulations offer the possibility to investigate the process, but an accurate evaluation of the Coefficient of Friction (CoF) [8] as well as a proper material modelling (in terms of mechanical properties and yield behaviour) are necessary to build up a reliable model [9,10].
The mechanical, anisotropic and formability behaviour was evaluated by means of tensile tests assisted by a Digital Image Correlation (DIC) system.
The mechanical characterization was carried out cutting 0.6 mm thick dog bone specimens (gauge length equal to 100 mm and width to 15 mm) from a single sheet in AA6061-T6.
Adopted levels of the factors investigated by CCD plan.

Luminescence properties of Tm3+ /Dy3+ co-doped zinc-aluminum phosphate glasses for white LED C.
The luminescence properties were investigated by excitation and emission spectra.
Many factors would affect the Eu3+ → Eu2+ process in glass materials prepared in air, such as glass optical basicity, rigidity of glass network, valence of glass network modifier oxides, etc..
The luminescence properties and CIE chromaticity coordinates have been analyzed in this study. 2.
Optical properties Fig. 2 shows the excitation spectra of Tm3+/ Dy3+ co-doped ZAP glasses monitoring emissions at 570 nm.