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Main factors of the slagging 1)The coal quality[2]. (1) Fusibility of coal ash.
It is one of the main factors that determine whether slagging or not.
The specific steps of judging slagging by the fuzzy comprehensive evaluation model: Firstly, select the factor set of evaluation object that affect slagging, following factors are considered in the judgment: t2 of the ash softening temperature, SiO2/AL2O3 of silica/alumina ratio, B/A of alkali/acid ratio, G of silicon ratio, diameter of dimensionless inscribed circle, temperature of dimensionless furnace and local atmosphere conditions, in total of seven factors, so X={X1, X2, Xn-1, Xn}={t2，SiO2/AL2O3，B/A，G，ψd，ψt，ats}.
Mechanical and Electrical Information, 2013, 21: 39+41 [4] Li Wenyan.
North of China Electricity Power University(Bei Jing), 2003 [5] Zhang Zhongxiao, The study of coal properties and boiler slagging[D], Tsinghua University (Bei Jing), 1998

But we encounter many experiments with possibilities of input factors more than one.
Teimouri, “Friction stir welding of aluminum 6061-T6 in presence of watercooling: Analyzing mechanical properties and residual stress distribution,” Int.
Vasanthakumar, “Microstructural and Mechanical Properties of Dissimilar Aluminium Alloys by Friction Stir Welding”.
Vasanthakumar, “Mechanical and tribological properties of Al6063 hybrid composites reinforced with SiC/ZrO2 by stir casting and thixoforming process,” Mater.
Vasanthakumar, “Mechanical properties of Al-Cu alloy metal matrix composite reinforced with B4C, Graphite and Wear Rate Modeling by Taguchi Method,” Mater.

The same mechanical loads were used in this paper, and the loaded model was shown in Fig. 4B.
A B Fig. 4 The loaded model Properties of the components are given in Table 1.
Highlight the static pressure affect of Gama nail.
Acknowledge This work was funded by the National Natural Science Foundation of China (Grant No. 51175153) and the National Natural Science Foundation of China (Grant No. 31370999) Reference [1]K S Poh, K Lingaraj, Complications and their risk factors following hip fracture surgery, Journal of orthopaedic surgery (Hong Kong), 2013,21: 154-7
Risk of mortality and predisposing factors after osteoporotic hip fracture: a one-year follow-up study, Aging clinical and experimental research, 2012,24(2): 181-187

Materials added to the matrix help improving operating properties of a composite.
Impingement angle, impact velocity, size and shape of the erodent particles, as well as the properties of target material are important variables that affect erosion wear [2].
The effect of nanotube content on the mechanical properties of polyamide-6 reinforced with basalt fibres was investigated by Meszaros et al. [10].
The experimental results showed that the combination of macroscopic and nano sized reinforcements improves the mechanical properties significantly.
Meszaros et al. [11] studied the mechanical properties of basalt fiber and montmorillonite reinforced polyamide 6 matrix hybrid nanocomposites.

Mechanical Reliability of a Segmented Silicon Layer on Ultra-thin Polyimide Substrates L.
The mechanical properties such as crack, interfacial delamination are critical to reach the flexible substrate.
It is necessary to explore the interface properties in order to improve the quality of flexible ultra thin substrate.
In this contribution, the special setup is designed to measure interface strength of the ultra thin film combining by Finite element calculation with the consideration of mixed mode, temperature, humility and other factors.
The development of the first cracks depends significantly on the silicon layer segmentation size, which affects both the crack density and the crack width.

Creep rupture data generally exhibits certain dispersity because of uncertainty factors in materials and experiment conditions.
Most design methods of rupture property are deterministic.
Reliability is used in electronic and mechanical domains.
Statistic Analysis of Creep Rupture Data based on Z-parameter As the rupture property is mainly the association of temperature, stress and rupture time, many parametric methods take some of these three factors into account and put the data in a band.
The safety is affected by dispersion degree of creep rupture data obviously.

The critical distance method with the stress concentration factor around the aperture can accurately predict the fatigue life. 1.
The structure of turbine blade is complex, the existence of film-cooling hole seriously reduces the overall performance of the structure, and the arrangement and diameter of hole have a significant impact on the cooling efficiency and mechanical properties of the turbine blade.
The critical distance method with the stress concentration factor around the aperture can accurately predict the fatigue life.
[5] Liu D S, et al, Tensile Property of a Modeling Specimen of DD6 Single Crystal Cooling Turbine Blade [J] Rare Metal Materials and Engineering, 2012, 41(8):1362-1366
Journal of Mechanical Engineering, 2013:59-66

The paper will discuss the analytical modelling equations and factors currently used for designing interference fits to resist the load components, followed by Finite Element Analysis (FEA) in order to investigate slip criteria for failure of interference fits.
The most important factors in the theoretical calculations of holding force and holding torque are the interference, which is directly related to the interface pressure, and the coefficient of friction.
The discrepancy in the results may suggest a problem with the values of these factors used to calculate the failure loads theoretically.
[5] in fact sheet: “ESDU 68002 - Shafts with Interference Fit Collars - Part 1 Some Factors Affecting the Design of an Assembly
Haugen, in: Probabilistic Mechanical Design, Wiley, New York, (1980).

Finite element analysis of Automobile transmission shaft Yin Jie , He Jun , Zhou Suping , Huang Wei College of Mechanical Engineering, Shantou University, Shantou, China yinjie.11@163.com Keywords: Finite element analysis, transmission shaft, modal, fatigue, harmonic response Abstract.
Fig.1 shows the Transmission system of vehicle .Many factors influencing the dynamic characteristics and the life of transmission shaft, Therefore set up a finite element model to analyze the dynamic characteristics and stress distribution of transmission shaft and study the intrinsic characteristics are necessary.
Typical mechanical properties are given approximately as: 835 MPa for ultimate strength,and 460 MPa for fatigue strength [3,4].The S-N curve of 20Cr is shown in Fig.5, When the fatigue life up to 107, the fatigue limit is 460 MPa , thus, spline shaft meet the requirements of fatigue strength.
Both of them don’t affect mutually.
To design a transmitted shaft with high service durability, mechanical characteristics such as fatigue strength, stress distribution,natural frequency, harmonic response are important properties that should be considered at design stage.

However, stainless steel alloys are difficult-to-machining materials; currently the general tools used to manufacture stainless steel usually fail to meet the requirement, even the tools made by cubic boron nitride or ceramics are unable, due to its own mechanical physical properties far from the requirements.
Therefore any aspect affecting the tool wear will affect the tool life indirectly.
All the factors influencing tool life must be analyzed, so as to determine the relationship effectively among them and obtain a reasonable and optimal tool life as well as good cutting performance.
Given the workpiece, tool material and tool geometry, cutting parameters are the main factors which impact the tool life.
With all these factors considered together, the optimal cutting depth can be obtained by ultrasonic vibration when machining stainless steel alloy.