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Physical and mechanical features of SiCp/Al composites, ELID grinding experiment equipment and grinding conditions are as shown in table 1 and 2 respectively.
Table 1 Physical and mechanical properties of SiCp/Al composites Experiment materials Volume fraction Tensile strength /( MPa) Elasticity modulus /(GPa) Elongation （%） SiCp/Al composite materials 40% 441 125 0.7 Table 2 Experiment equipment and grinding conditions Experiment  equipment Machine tool Ultra precision molding surface grinder MSG - 612 CNC (modification) Measuring instrument TR300 surface roughness measuring instrument S - 3400 type N Ⅱ scanning electron microscope Grinding conditions Wheel Copper-iron bond diamond pellets（W40,W10,W5） Lapping liquid Electrolysis Lapping liquid Electrolysis power High frequency DC pulse power[3] Grinding process parameters setting By analyzing the main mechanical properties of SiCp/Al composite materials and similar materials grinding process parameters, combined with grinding characteristics of this material, optimized by grinding process parameters is as shown in table 3.Thus the machined surface roughness can obtain Ra0.030μm and
(2) High quality of the workpiece is formed by the comprehensive factors influencing each other, not only the pursuit of a single grinding parameters change, but also considers the combination of different grinding process parameters.
(3) The grinding depth, grinding wheel rotation speed and feed speed are the main factors to affect the surface quality.
Journal of Mechanical Engineering, 2000, 36(5): 89-92 .In Chinese

The last 4000 configurations were used for the analysis of structural and dynamical properties.
Dynamical properties.
[2] Sun YJ, Wang QL, Geng HR, Effects of complex modificating technique on microstructure and mechanical properties of hypereutectic Al-Si alloys, J Mater Sci. 47(2012)2104-2019
Factors affecting the strength of P{011}aOE (c) 566 >-texture after annealing of a cold-rolled Al-Mn-Fe-Si alloy, J Mater Sci. 50(2015)5091-5103
[27] Cheng YQ, Sheng HW, Ma E, Relationship between structure, dynamics, and mechanical properties in metallic glass-forming alloys, Phys Rev B. 78(2008)014207-1-014207-7

Subhash et al experimentally investigated the friction welding of austenitic stainless steel and low alloy steel and the microstructure and mechanical properties are studied.
Sathiya et al investigated the dissimilar materials of austenitic stainless steel and ferritic stainless steel were studied by different mechanical properties exhibited by friction processed joints which exhibits better properties when compared to the fusion processed joints.
Many literatures are analyzed by means of Taguchi method with effect of friction welding on dissimilar materials by studying mechanical properties [7-11].
Experimental factors and their levels Factors Levels 1 2 3 Friction pressure [MPa] 22 33 43 Upset pressure [MPa] 65 87 108 Rotational speed, [rpm] 500 1000 1500 Burn-off length, [mm] 1 2 3 Fig.1.
Yang, “Impact toughness and fracture analysis of linear friction welded Ti–6Al–4V alloy joints”, Materials and Design 30 (2009) 2128–2132 [2] G Subhash Chander , G Madhusudhan Reddy , A Venugopal Rao, “ Influence of rotational speed on microstructure and mechanical properties of dissimilar metal AISI 304 - AISI 4140 continuous drive friction welds”, Journal of Iron and Steel Research, International. 2012, 19(10): 64-73 [3] Sathiya.P, Aravindan.S, Noorul Haq.A, “Effect of friction welding parameters on mechanical and metallurgical properties of ferritic stainless steel”, Int.J.Adv.Manuf Technology (2007). 31: 1076-1082

Schuessler [5,6] researched the influence of light pump lasers, diode-pump lasers, and femto-second lasers in cutting nickel-titanium, 316 L stainless steel, and cobalt-chromium alloy stents regarding kerfs quality, the heat-affected zone, cutting speed, area ratio, and the surface properties of materials.
Gachon et al. [8] examined the influence of laser cutting accuracy on the mechanical properties of stents.
Based on the con-side ration of biomechanical properties, an ideal stent should be equipped with following features: (1).
The used material is also an important factor in determining the performance of a stent.
The bio-mechanical properties of the material, like bio-compatibility, X-ray and MRI visibility, radial strength, flexibility, and durability, affect the performance of a stent.

The properties of the nano composite were investigated using SEM and Vicker's microhardness tester.
The properties of the composite system depend upon many variables, particularly on the nature and content of SiC particles dispersed in the Ni-matrix.
affect the codeposition of Ni-SiC system [11].
Microhardness properties of the composite were measured by using Vickers microhardness tester.
Microhardness of the metal nano composites is mainly affected by three factors; particles hardening, dispersion hardening, and grain refining.

Therefore, the aim of this paper is to develop a pore network model for drying of porous media by applying the fractal geometry theory and transport process principle, which took various factors into consideration, such as the liquid-phase flow, vapor-phase diffusion, temperature gradient, and pore microstructure characteristic.
In addition to the pure geometric fractal property, numerous flow processes in a porous medium have also been found to be fractal.
Generally speaking, there are various factors affecting porous media drying, and the mechanism is complicated.
Because the drying process involves phase-changing heat transfer, the temperature field is affected by liquid phase distribution, and the heat transfer is an unsteady-state transfer process.
Conclusions A fractal pore network model for unsteady drying process of a natural porous body was developed by applying the knowledge on fractal geometry, physics of flow through porous media, and transport-process principle, which took various factors into consideration, such as the liquid-phase flow, vapor-phase diffusion, temperature gradient, and pore microstructure characteristic.

Firstly, geometrical and mechanical in situ surveys are presented.
Keywords: Ancient timber structure, ceiling vault, in situ survey, structural analysis Introduction The analysis of ancient timber structures shows some difficulties related to several factors, like the high features variability due to the material nature, the inaccessibility to carry out in depth surveys, the insufficient information about the used past technologies.
Preliminary diagnostic inspections are needed to evidence any damage and decay situations, to find and eliminate their causes and, at the same time, to characterize the structure as respect to the mechanical properties, for determining the actual load-bearing performance and capability.
For the purpose of acquiring a comprehensive knowledge of the systems, the analysis methodology has been developed through the following steps: 1) geometrical survey, aiming at the identification of the structural scheme by means of in situ inspections; 2) failure diagnosis and visual grading, aiming at the evaluation of material defects and deterioration degrees, and then of the mechanical properties of old timber elements; 3) structural modeling, aiming at the definition of geometrical, mechanical and loading models, corresponding to different phases of the structure life; 4) numerical analysis, for the evaluation of the structure capability in terms of strength and deformation, carried out according to Eurocode 5.
Concerning the mechanical characterization, for the structural models related to the erection phases of the structure the material is modelled as "new timber", assuming the mechanical properties according to UNI 11035-2 (2003) standard.

And it obtained that the roadway deformation not only by mining impact, but also considering the geological environment surrounding rock conditions, tunnel position in which layers of rock, rock properties and other factors.
In the workface mining later, resulting in a number of roadway and chamber groups affected by exploiting coal seam[4-6].
So the 11-2 waste belt conveyor roadway vertical stress is the main factor of the sidewall deformation, it is shown in Fig.4.
It could be found in the deep mining, the roadway surrounding rock shown the complex rheological behaviors, and the lithology and mechanical parameters largely determined the deformation of the roadway.
Therefore, it would to control the deformation that could not only retain the large protection pillar sizes, but also should consider various factors, such as the lithology, water and other factors.

Decisive properties in choosing the materials to be applied include mainly the coefficient of thermal conductivity, density, compressive strength and water absorption.
This linear polymer contains methyl groups (–CH3) in its formula, on whose spatial arrangement its physical properties depend.
Due to the thermoplastic properties of polymers the composite material is produced in electric furnace.
The weight ratio and the mutual arrangement of layers of binder and filler affect the thermal technical and mechanical properties of composite.
Ehrenstein: Polymeric Materials : Structure - Properties - Applications.

High traffic load and temperature are the two critical issues that affect the quality of asphalt pavement.
However, an important factor for sporadic use and incidence are composite's financial demands.
Padevet, et al., Mechanical, hygric and thermal properties of cement-based composite with hybrid fiber reinforcement subjected to high temperatures, International Journal of Thermophysics, Volume: 30, Issue: 4, Pages: 1310-1322, Published: August 2009
Cerny., Effect of high temperatures on mechanical and thermal properties of carbon-fiber reinforced cement composite, Cement Wapno Beton, Volume: 13, Issue: 2, Pages: 66-+, Published: April 2008
Konvalinka, Permeability and basic physical properties of concrete with metakaolin addition, Applied Mechanics and Materials 486 (2014) 313-318.