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Our research team, Future Manufacturing Technologies (FMT) at the University of Oulu, developed an innovative silver-shell–copper-core (Ag-Cu) coating to improve the surface and functional properties of AM AlSi10Mg.
While such treatments may improve bulk mechanical properties, they can also reduce the uniformity of silicon distribution, which is critical for consistent oxide formation.
In the present study, a chemically anodized aluminium oxide (AAO) film was applied to PBF-LB AlSi10Mg alloy to improve surface properties and corrosion resistance.
Lin, Effect of heat treatment on microstructure, mechanical and thermal properties of selective laser melted AlSi7Mg alloy, J Alloys Compd 945 (2023) 169278. https://doi.org/10.1016/J.JALLCOM.2023.169278
Pramanik, Effect of Heat Treatment on Surface Integrity and Tribological Properties of LPBF Printed AlSi10Mg, in: 2024: pp. 67–77. https://doi.org/10.1007/978-3-031-65656-9_7.  

During modeling it is approximated by an ideal homogeneous cantilever having material properties of bulk nickel.
Because the system surroundings are in equilibrium, the only force component that affects the moving microstructure results from the additional film pressure ∆p.
Quality factors listed in Table 1 indicate that in this particular case the level of air damping is relatively low even at atmospheric pressure.
These results demonstrate that under the effect of squeeze-film damping the quality factors of the analyzed microsystem may be reduced to as low as Q ≤ 1.
It was found that predicted quality factors are in good qualitative agreement with approximate analytical values in the pressure range of 1 ÷ 100 kPa.

The Finite Element Analysis of the Wind Turbines's rotary support Hongliang Hu, Ruijie Wang, Chunling Meng, Guofeng Li (Beijing Technology And Business University, School of Material and Mechanical Engineering, Beijing, 100048, China) Key words: wind turbines; the rotary support; finite element analysis Abstract.
The motor part of the wind turbine yaw system are all installed in the rotary support which bears the actuator of yaw system, the front part of the wind turbine’s (including the fan spindle, generator, hub, blades, etc.) gravity and loads and pass these to the tower, so the performance of the rotary support directly affects the operation of wind turbines.
As the relatively complex force and structure, traditional algorithms can not meet the required precision and not make theoretical analysis, requiring to apply the finite element analysis to analyze its structural rigidity, natural frequency and other properties, the results for the wind turbine rotation support provide a theoretical basis for further design, finalization of the program[1-2].
Fig.4 The stress distribution and stress table under Fz(min) Conditions The material yield limit of the rotary support is 215MPa.According to the mechanical strength requirements from fan specifications[6-7], calculations take safety factor n = 1.1, so the rotation support’s allowable stress is: The maximum stress in all conditions is 52.3MPa and the maximum work stress is less than the maximum allowable stress, so the rotary support meet the static strength safety requirements.
Mechanical vibration[M].Beijing: Tsinghua University Press,2009

The roughness effect is also a significant factor in determining bearing performances, but before studies does not take it into consideration for related PSFD theoretical and experimental researches.
All the above researches concerned the bearing performance or properties much more, but bearings should be actually fixed on turbo machineries or other real apparatuses.
Neither the longitudinal and transverse nor the values of roughness parameters would not affect strongly nonlinear rotor-bearing system very much even though for higher permeability, and the result may caused by the strongly nonlinear effect inclusive of the strongly nonlinear oil film force and nonlinear Duffing equations controlling nonlinear dynamics of the whole system.
Institution of Mechanical Engineers, (1957), p.151
Christensen: Stochastic models for hydrodynamic lubrication of rough surfaces, Proceedings Institution of Mechanical Engineering (Part-I), Vol. 184 (1969), p.1013

For all the experimental conditions (laser Power (W), scanning speed V (m/min), mass feed rate Dm (g/min)), surface properties have been analyzed, considering local melt-pool properties and melt-pool / powder stream interactions.
Thermo-physical properties considered in our calculation for the solid and liquid phase are presented in table 1.
Various factors influence the agglomeration of non-fully melted particles: the powder catch efficiency (40 % to 80 % in our case), which depends on (1) the (melt-pool area / powder stream area) ratio, (2) the transient time tp (=L/2vp) of particles in the melt-pool, (3) the coaxial powder stream – near wall interaction [8].
This suggests that, on Ti6Al4V, the viscosity h (Pa.s), the surface tensions s (N/m), and their thermal variations g=ds/dT, were little to no affected by the O2 content.
Those oxidations were formed during the annealing (post melting + solidification) thermal stage, and did not really affect the melt-pool behavior, and its final shape.

Introduction Braking ability of automobile is an important aspect affecting safety and driving comfort, the research focused on the brake performance and increase of reliability in the past.
Braking noise will not only affect occupant comfort, but also cause environmental pollution, and also lead to increases of service costs due to replacement brake or brake components for manufacturer.
Therefore, generation and suppression of brake noise has become an important factor considered when brake is designed and manufactured. 1.
Vibration of brake includes friction vibration caused by friction material property and component vibration caused by mechanical component vibration.
The finite element mesh is a crucial step of finite element numerical simulation analysis, it directly affects accuracy of subsequent numerical analysis results.

To date, most attempts to create hydrophobic/hydrophilic surfaces involve etching and coating/deposition techniques where chemical/physical effects are used to modify material property or composition of a substrate, such as a silicon wafer.
By cutting micro grooves having different depths, cross sectional shapes and orientations, the significance and anisotropy of the hydrophobic/hydrophilic characteristics are expected to be controllable precisely without changing the material properties of the surface.
This paper aims at clarifying the relationship between surface wettability and groove depth/pitch on a brass surface, and identifying key factors influencing the mechanisms of the micro grooving process.
The grain boundary effect will also affect the uniformity of wettability.
In micro grooving, burr formation takes place significantly at certain depth of cuts, which might affects the surface wettability.

Effect of Cutting Oil on Grinding Cemented Carbide Xiaofan Yang1,a, Chao Li1,b, Tenghui Zeng2,c, Lingxiang Li2,d, Zhilong Xu1,e, Judong Liu1,f 1School of Mechanical Engineering, Jimei University, Fujian, Xiamen 361021, China 2Toolmanufacturer of Xiamen Golden Egret Special Alloy Co.
Total-synthesis cutting oil is a kind of cutting oil which possesses excellent combination properties of cooling and lubrication.
The lubricating property of cutting oil depends largely on its penetrability, and the penetrability of cutting oil depends on its viscosity as well.
In the grinding process, the cut depth affects the grinding process in different degrees as well.
Then the grinding force will get higher, the surface quality of workpiece will get worse, and the wear of grinding wheels will increase. 3) There are many factors affected the quality of grinding process.

However, there are numerous problems such as delamination, chipping, poor machining quality and tool wear in drilling of C/C composites due to inhomogeneous, anisotropic, wear resistance and varying thermal properties of the composites.
Proceedings of the Institution of Mechanical Engineers Part B Journal of Engineering Manufacture, 2013
Workpiece material properties are listed in Table 2.
Table 2 Properties of workpiece material Property Value Property Value Density 1.8 g/cm3 Tensile strength 75 MPa Shear strength 15 MPa Hardness(Rockwell) 65 Porosity 17-20% Thermal conductivity 37 W/mK According to the previous experimental experience and due to the limitations of the experimental set-ups (the vibration frequency was fixed at 20 kHz on the ultrasonic device and maximum spindle speed on the machining center was 6000 rpm), three machining variables (spindle speed, feed rate and ultrasonic amplitude) were chose to complete the experiments.
The drilling force is an important factor affecting the quality of machining holes and the decrease of the drilling force can effectively reduce chipping size of holes exit.

As it is well known that the behaviour of passengers is a very complicated factor to accommodate in the elevator model.
The special case mr=0, i.e. the empty car, is not important when considering ride quality but are of importance for maintenance or noise effects affecting the building system.
The technique presented in this paper seems to be sensitive enough to identify the mechanical response of passengers wearing different type of shoes in order to provide criteria for optimal covering floor properties of elevator cars.
Gefen, Role of EVA viscoelastic properties in the protective performance of a sport shoe: Computational studies, Bio-Medical Materials and Engineering 16 (2006) 289-299
Baly, Towards a footwear design tool: Influence of shoe midsole properties and ground stiffness on the impact force during running.