Search results

Cell growth morphology on nano-structured surface based on wetting Ge Qin1, a, Haoxue Li2,b, Mengdie Ma1, Juanjuan Li1 and Yafei Deng1 1School of Mechanics and Power Engineering, Henan Polytechnic University, Jiaozuo, Henan, China 2Department of mechanical and electrical engineering, Henan Mechanical and Electrical Engineering College, Xinxiang, Henan, China aqinge@hpu.edu.cn, blhx16@sohu.com Keywords: Wetting; Nano-structured; Cell; Growth morphology; Abstract.
Wettability is an important characteristic of solid-liquid interface which is decided by properties of the solid-liquid interface, such as chemical compositions and micro geometry features of the solid surface[1,2].
The wetting properties will change when the geometry of solid surface changes.
It is affected by the roughness, structure, physical and chemical properties and other factors of the actual surface.
The relationship between the apparent contact angle and interfacial properties of the surface has been studied by Wenzel, Cassie and Baxter firstly, and the different models have been built to revise the Young’s equation (as shown in Fig. 2).

The mechanical properties of cemented carbide substantially depend on its composition and WC particle size.
Their mechanical properties can be modified over a broad range by changing the content of Co phase and WC grain size [4].
A reduction of the WC grain size, on the other hand, increases the hardness and improves other mechanical properties [5].
Tool life is the most basic and primary indicators to determine the advantages and disadvantages of cutting tool material performance, it is mainly achieved through the tool wear test, in general, many factors affect the tool wear, cutting speed is the most significant factor affecting cutting tool wear and tool life after the workpiece, the tool material and tool geometry were selected, therefore, all turning tests were carried out on a conventional lathe equipped CA6140 with stepless speed change device, continuous dry cylindrical cutting.
Tool wear mainly depends on the material chemical composition, physical and mechanical properties, microstructure and cutting conditions, etc. whichever factor changes, it will affect on the tool at a certain extent, the wear mechanism will also not be same.

In their nature, titanium alloys in nano- and submicrocrystalline states have higher physical and mechanical properties than titanium alloys in the microcrystalline state [1, 2].
These properties, on the one hand, promote their use in products.
Due to these properties, electron-beam welding is used for welding a wide variety of metals and alloys.
Therefore, it can be assumed that one of the main factors affecting a wide range of structural-phase states in the weld zone and in the heat-affected zone during electron-beam welding is the increased concentration of interstitial oxygen atoms in the crystalline lattice of the solid solution based on a–Ti.
Chen, Tensile and fatigue properties of electron beam welded dissimilar joints between Ti–6Al–4V and BT9 titanium alloys, Materials Science & Engineering.

The one of importance inspection item considered to represent mechanical properties of products such as per cent graphite nodularity which has relative to tensile strength, impact strength and elongation [1,2].
It relates to the mechanical property included strength [5].
The selected factors and levels for DOE.
Effect of Graphite Nodularity on Mechanical Properties of Ductile Iron for Waterworks Fittings and Accessories, International Journal of Civil & Environmental Engineering IJCEE-IJENS, Vol.10, No.03
Mechanical properties improvement of metallic rolls by laser surface alloying.

It was observed that mechanical properties and wear rate increased with increase in reinforcement content.
Table 1 Design factors and their levels Levels Factors Volume Fraction (V) [% wt.]
ANOVA Test Variance analysis was conducted to find the important factors, as well as the interaction factors, affect the composite samples. with the help of ANOVA test, the % contribution of each design factor, as well as interaction of design factor, are also evaluated.
Krishna, Production and mechanical properties of A356.2/RHA composites, International Journal of advanced science and technology. 33 (2011) 51-58
Sarojini, Shabana, Study of Mechanical Properties and Wear Behaviour of Sugar cane Ash reinforced Aluminium Composite, International Journal of Mechanical Engineering and Technology. 8 (2017) 597-606

It is shown that the clearance has affected the dynamics response of the system and the lubrication is effective to deaden the impact.
The phenomenon can be improved by the lubrication involved in the mechanical system.
The model is more realistic because the elasticity properties of contacting surfaces and the loss of energy in the impact process.
Some factors must be taken into consideration in the force model, such as account material properties, geometric characteristics and the impact velocities of the contact bodies.
Part C, Journal of mechanical engineering science, vol. 210(c3), 1996, pp. 215-223

The results indicate that the thermal expansion ratio substantially affects the contact stresses.
It is assumed that the thermo-mechanical properties of the coating (referred as medium) vary exponentially along the thickness, i.e
Accordingly, the thermo-mechanical properties of the substrate (referred as medium ) are denoted by , and which are taken to be constant.
It is clear that the coating thickness substantially affects the surface temperature rise.
A comprehensive parametric study was conducted to disclose the effect of the material properties, the coating thickness and the speed of cylinder over the surface stresses and the temperature rise as well.

Fly ash content, especially CaO and MgO, are the key factors affecting the cracks tendency on the surface of cement paste, due to expansion.
Sarker, “Effect of ultrafine fly ash on mechanical properties of high volume fly ash mortar,” Constr.
Yuk, “Deformation and mechanical properties of quaternary blended cements containing ground granulated blast furnace slag , fly ash and magnesia,” Cem.
Zhang, “Microstructure, crack propagation , and mechanical properties of cement pastes containing high volumes of fly ashes,” Cem.
Choktaweekarn, “Effect of free lime content on properties of cement – fly ash mixtures,” Constr.

However, the properties of the composites depend on their relative amounts and their interconnection, which is termed as connectivity.
Comparison of the densities and dielectric properties of this work against calculated values.
Herbert, Electroceramics Materials Properties Application.
Herbert, Electroceramics Materials Properties Application.
Zhang, Electrical and elastic properties of 1-3 PZT/epoxy piezoelectric composites, J.

The results show that the elastic modulus affects greatly on the load-carrying capacity.
Introduction Surface texturing inspired by the microstructure on natural surfaces, has been recognized as an efficient way to improve the tribological properties of mechanical components.
The result shows that the wetting property is an important factor in affecting the tribological properties of textured PDMS.
All results mentioned above show that the design principle of the textured soft materials is different from that of the stiff materials and the effect of surface texture is more complicated on the soft materials because more factors such as the deformation and wetting ability must be considered.
(11) Where, n is the number of grid nodes, pz is the actual load and ω is over-relaxation factor about h0.