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These features help us to use the polymer mechanical components under corrosive condition, non-oil-lubrication conditions and an anti-magnetic environments etc.
In mechanical engineering field, their tribological potentials are focused on.
Wear on the all-PEEK bearings was not affected from the rotation speed, and melting failure of the hybrid bearing was obtained.
However, if the bearing is rotated under unexpected conditions, μ is affected by some noise factors.
Jawaid, A review on PEEK composites-Manufacturing methods properties and applications, Material Today: Proceedings 33, (2020) 1085-1092

According to the engineering geologic report, following is the name, physico-mechanical parameters of every soil layer, as the table 1 shows.
Table 1 Physico-mechanical parameters of soils Structure design of subway station.
Soil layers with similar properties can be merged into one layer, average value of which is the final parameter; (2) Pile foundation and diaphragm wall are constructed first, then following with excavation.
The factors affecting the occurrence of vertical displacement are mainly including the pit uplift, the vertical overload and the deformation caused by the temperature difference and shrinkage, of which the pit uplift and vertical overload is the most important two factors[9].
Hence, in the process of design, the diameter of piles cannot be increased blindly, comprehensive factors should be considered.

The mechanical properties of these materials are crucial to achieving the grasping function along with the mechanical structure of the prototype.
Additionally, processing surface electromyography (EMG) signals and integrating these factors with a linear neural network are essential for enhancing control and grip precision in prosthetic hands.Through applying pattern recognition techniques on EMG signals, researchers have successfully improved the dexterity and functionality of myoelectric control for prosthetic hands [33].
Materials and Methods Mechanical system.
The flexibility of TPU allowed for a reduction from 3 to 2 DOF without affecting the grip of the three proposed gestures.
com/science/article/pii/S0094114X19322839 [8] "The Hannes hand prosthesis replicates the key biological properties of the human hand | Science Robotics."

However complex surface characteristics and hard and brittle properties of dental ceramic materials caused difficulties in the processing and subsequent grinding.
As a result, the quality of products was adversely affected [2, 19, 22, and 23].
Warnecke [4] pointed out that when we grind the new ceramic the grinding process the results are closely related to the mechanism of material removal .Material removal mechanism is determined by material properties, geometry abrasives, abrasive cut sports and acting on the work-piece and the abrasive elements such as mechanical and thermal loads.
Fig.4 SEM micrographs of the maximum depths of subsurface damage induced in the porcelain samples at the depth of cut of 10 mm and the feed rates of (a)15mm/min(b) 60mm/min[19] Factors influencing the machining of Y-TZP for crowns were examined in Ralph G.Luthardt’s research[21].
[6] L.Yin, Property–process relations in simulated clinical abrasive adjusting of dental ceramics, journal of the mechanical behavior of biomedical materials.16 (2012) 55–65

The mechanical properties of the silicon carbide are as follows: bending strength RT = 490 MPa, fracture toughness Kc = 4.0 MPa.m1/2, density = 3.15 g/cm3, Young's modulus E = 400 GPa and Vickers hardness H = 24.56 GPa.
Discussion In precision grinding, the final quality of the work surface is affected by many factors, including the machine and control system, the machining parameters (e.g., speed, feed rate and diamond grit size), and the workpiece mechanical properties.
In grinding of ceramics, the grinding energy and mechanical forces may cause a severe deformation in the ceramic crystals and produces a change in the ceramic phases.

Damage mechanics researches the mechanical behavior of single cracks and even more importantly the macro mechanical behavior of overlapped cracks.
The properties of the molding sand are shown in Table 1.
The maximum tensile stress occurred somewhere away from the center of the jet to a distance that depends on several factors.
This indicates that the attacking time of the water jet is only one of the factors which influence the removal effect of the molding sand.
Which might be affected the numerical results accurately.

Fabricated samples by stir casting route were turned by the most variable factors, cutting speed, depth of cut and by a constant feed rate of 0.206 mm/rev.
This is due to additions of the reinforcement’s changes the property of base material.
The experimental trials are conducted at one factor at time at a feed of 0.206 mm/rev.
Effect of surface roughness on Cutting speed From the Fig. 2 and Table 3, it is observed that the surface finish was not significantly affected by depth of cut.
Hence built up edge formation is found to be the most important factor in the present study for deciding surface finish [2] and wear phenomenon.

Crystallographic orientation effect Crystallographic orientation is one of the most important parameter affecting the oxide growth rate and oxide adherence [5, 14-16].
Crystallographic orientation affecting a (Ni,Pd)Al coating, oxidized at 950°C for about 200h.
Chemical pollution Chemical pollution is an important factor influencing the oxidation kinetics and the TGO adherence to the substrate.
This observation shows once again the influence of impurities affecting the oxide growth mechanism.
Oxide growth can proceeds by anionic or cationic mechanisms, depending on the alloy or coating composition which modify the nature and quantity of impurities in alumina, - Chemical pollution may act to modify oxidation and diffusion mechanism, affect oxide growth kinetics and oxide / alloy interface mechanical properties

Oil production is accompanied by associated gas, mechanical impurities and produced water.
Caverns seats leading to loss of tightness, wear and breakage The expected cause of intense wear is an aggressive environment and mechanical impurities that directly affect the tightness of the valve's gate pair.
Materials and Methods The titanium material to ensure the corrosion-resistant properties of parts of valves in the oil and gas industry was used in two options: in the manufacture of parts from titanium alloy and titanium-based coatings on steel samples.
Cutting fluid was created taking into account all environmental requirements and the properties presented in Table 2 [10].
Properties of cutting fluid Ecocool Global 10 uk Property Unit Data Test method Density at 15ºC ( 59ºF) g/ml 0.98 DIN 51 757 Kinematic viscosity at 40ºC ( 104ºF) mm²/s 55 DIN 51 562-1 Corrosion test emulsion > 5% Corr.

Stabilization of the operating speed is a vital factor that affects a combine harvester's productivity.
It means that the positional precision of the assembly parts affects the simulation results a lot.
The quality of mesh is a pivotal factor throughout the entire simulation process.
Liu: Mechanical Design, 1st ed.
Wu: Mechanical Designer Hankbook, 1st ed.