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The thin films can be rationally designed to exhibit novel and significantly improved physical, chemical, mechanical and magnetic properties [15-19].
It can be observed that the longer the deposition time of a sample, the higher the Sal factor, i.e. the deposition time of the sample significantly affects the longevity of the surface of the material - the longer the deposition time, the longer the surface of the sample.
In addition, the investigation of the materials in nanoscale may be very useful for the study of the friction wear or the effects of body fluids on the particular material properties.
Ghasemi, Microstructure, morphology and electrochemical properties of Co nanoflake water oxidation electrocatalyst at micro- and nanoscale.
Ţălu, Morphology and Optical Properties of SiO2-Based Composite Thin Films with Immobilized Terbium(III) Complex with a Biscoumarin Derivative, Int.

Important Sampling for Structural Reliability Based on Radial Basis Function Neural Network Lihong Gao1,2, a, Gening Xu 3,b and Ping Yang1 1School of Mechanical and Electronic Engineering, Lanzhou University of Technology, Lanzhou, 730050, China 2 Department of Mechanical Engineering, Taiyuan Institute of Technology, Taiyuan, 030008, China 3 School of Mechanical and Electronic Engineering, Taiyuan University of Science and Technology, Taiyuan, 030024, China aglh0610@sina.com, bxugening@sina.com Keywords: Structure reliability, Important sampling(IS), Radial basis function neural network(RBFNN).
Traditional K-means clustering algorithm requires determining the number of the hidden nodes in advance, and the choice of initial clustering centers heavily affects the learning speed of network.
(10) Where, α is the learning rate of network, is the momentum factor belongs to (0,1), E=.
The above results in the following computation procedure: ● Determine the statistical property and distribution type of random variableand iterative precision.
Table 1 Statistical properties of random variable for gantry truss structure RVs Mean COV(％) Standard deviation Distribution A1[㎡] 0.36 10 0.036 Log-Normal A2[㎡] 0.18 10 0.018 Log-Normal P[KN] 20.00 25 5.0 Extreme typeⅠ P A1 A2 1 A1 2 3 4 Fig.2 The hyperstatic structure diagram of Gantry truss Failure occurs when the horizontal deflection of node 3 exceeds a value of 0.01m, the limit state function can be written implicitly as below (14) Where, denotes the maximum horizontal displacement, is the node 3 horizontal displacement.

After studying the influence of different silica-alumina materials on the mechanical properties of geopolymers, experiments are carried out.
Effect of Na2SO4 solution on mechanical properties and quality of fly ash polymer.
Effect of H2SO4 solution on mechanical properties and quality of fly ash geopolymer.
Effect of NaCl solution on mechanical properties and quality of fly ash polymer.
Effects of combined usage of GGBS and fly ash on workability and mechanical properties of alkali activated geopolymer concrete with recycled aggregate, J.

Existing documents reflect that the maximum speed of wire feeder for solid wire of φ1.2 is 25m/min in practical production, and the wire feeding speed more than 25m/min does not really get applications in mechanical property especially the impact toughness disqualification of welding joint.
This paper gives out solutions to improve the low temperature impact toughness of high-current MAG weld metal, tries to establish relationship between internal friction and impact toughness and do research on mechanical properties of weld metal using internal friction.
Internal friction experiment adopted DMA2980 Dynamic Mechanical Analyzer.
Another factor that affects the ductility of weld metal is microstructure morphology.

When the addition amount of hBN raised to 20 wt.%, the friction coefficient decreased to a range between 0.1 and 0.3 at room temperature and the wear coefficientwas also reduced by a factor of five in comparison with silicon nitride.
Table.1 shows the related physical and mechanical properties of the different specimens.
Fig.2 X-ray diffraction pattern of sintered Si3N4-20％hBN composite Fig.3 SEM micrograph of etched surface of Si3N4-20%hBN composite Table.1 Physical and mechanical properties of specimens Specimens SN0 SN5 SN10 SN20 SN30 hBN amount (Vol.%) 0 5 10 20 30 Density (gcm-3) 3.31 3.17 3.10 2.97 2.94 Porosity (%) 0.84 0.90 0.91 1.04 1.05 Bending strength (MPa) 812 758 613 541 465 Vickers hardness (GPa) 19.9 19.6 15.3 9.3 6.7 Fracture toughness (MPa·m1/2) 8.01 7.80 7.14 5.97 5.50 The pin (SN0-SN30 in Table 1) in the size of 5×5×10 mm with a filleted square end were used to form flat contacts as shown in Fig.1 (b), so that the contact surface area is about 20mm2; the discs, as the friction pairs, were made from Si3N4 ceramic without hBN (SN0 in Table 1), and were in the size of 44 mm in diameter and 6 mm in thickness.
Thus, no chemical processes activated at the contact interface to produce any kind of oxide film that may affect the tribological behavior.
The mechanical properties of the Si3N4-hBN composites significantly decrease (Table 1) with the increase of hBN, leading to more and more wear debris formed on the wearing surfaces.

Then, parametric study can be conducted in order to analyse the minor to major factors that influence the cabin compartment cooling load, where the results can be used for the purpose of system improvement or system optimization especially in the early stage of the vehicle development.
This model is relatively complicated compared to model proposed by Mohamed Mansor [14] and Sukri et al. [16], where the heat gain weighting factor and air weighting factor must be determined before the cooling load can be analyzed.
Correction factor for surfaces with tilt angle less than 90 is also considered as 0°C [16].
The values of tj and aj for standard glass and the properties of side window, front and rear wind screen of 1.6L Proton Wira Aeroback passenger car are given in Table 1 and Table 2 respectively.
The most significant factors on cabin cooling load are the cabin air temperature set-point and number of occupants followed by vehicle surface color and vehicle speed.

Analysis on the Finite Element of Electromechanic Coupling of Flexible Gear in Electromagnetic Harmonic Drive Ren Yubo,Xu Lizhong Mechanical engineering institute, Yanshan University, Qinghuangdao, 066004, China ryb@ysu.edu.cn , xlz@ysu.edu.cn Keywords: Electromagnetic Harmonics; Flexible Gear; Coupling; Boundary Conditions Abstract.
Introduction Electromagnetic harmonic drive is a kind of new driving mechanism, which can conduct power transmission relying on the flexible deformation of shell component---flexible gear and affected by the rotating magnetic field [1].
Based on the physic model of electromagnetic harmonic drive, the specific analysis steps of this problem using ΜMKSV are shown as follows: (1) Establish finite element analysis model of structurefield and geometric model in ANSYS with the wall thickness; (2)Assume the material properties as flexible modulus, Poisson's ratio; (3) Meshing in the structure field.
Analysis of the force and deformation of flexible gear of mechanical and electrical integrated electromagnetic harmonic friction drive, J.
Mechanical engineering. 16 (2011) 1170-1172

The moisture in RDX has such an important influence on properties of RDX that increasing moisture content would result in lower detontion performances, worse storage and unexpected security risk, etc.
As an energetic material, RDX is not resistant to high temperature and is sensitive to blast under the action of external energy, such as heat energy, electric energy, light energy, mechanical energy.
The factor analysis affecting water evaporation in the vacuum drying process [J].
Factors influencing the maximum rates of air-drying shelled corn in thin layer.
Department of Mechanical Engineering, Purdue University, West Lafayette, IN, USA

Introduction Having high specific strength to weight ratio, good mechanical properties at high temperature, corrosion resistance, excellent weldability and nearly perfect bio-compatibility with human tissues, Titanium and its alloy have been successfully applied for aircraft structural and engine parts, ship and chemical industries and other failure critical components, as well as surgical implants[1-3].
First, both nominal stresses and geometric stress concentration factors (SCF) cannot be readily calculated from finite element models due to their strong dependence on element size at weld discontinuities.
Table 1 Stress Concentration Factors Methods Joints SCF mesh-insensitive structural stress T-fillet (2mm) 1.414 L-fillet (2mm) 2.602 T-fillet (10mm) 1.373 L-fillet (10mm) 2.185 hot-spot stress method*[4] T-fillet (2mm) 1 L-fillet (2mm) 1.56 T-fillet (10mm) 1 L-fillet (10mm) 1.25 *Transverse fillet welded joints are considered as the basic joints, for which the structural stress concentration factor is set to 1.0 in [4].
(2) There are many factors might affect the fatigue life.
Experimental and numerical study of static and fatigue properties of titanium alloy welded joints.

The electrical properties of fruit section tissue and fruit physiological index correlation was studied by Jha et al.[3],the result indicated that strong correlations has been shown among fruit resistance,capacitance and hardness as well as the content of soluble solids.
References [1] Sirisomboon, P(Sirisomboon, Panmanas); Tanaka, M(Tanaka, Munehiro); Kojima, T(Kojima, Takayuki); Williams, P(Williams, Phil).Nondestructive estimation of maturity and textural properties on tomato 'Momotaro' by near infrared spectroscopy.
Transactions of the ASABE,2006,49(6):1977-1981 [5] Guo W C,Nelson S O,Trabelsi S,et al.Dielectric properties of honeydew melons and correlation with quality.
Journal of Microwave Power and Electromagnetic Energy,2007,41(2):44-54 [6] Yan Tang,Guangyuan Du,Jishu Zhang.Relationship between Electrical Properties and Physiological Characteristics of Kiwifruit.
Transactions of the Chinese Society of Agricultural Machinery,2012,43(3):1000-1298 [7] Libin Zhang,Fang Xu,et al.Study on Correlation Between Dielectric Properties and Freshness of Apples.