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School of Mechanical and Electronic Engineering, Wuhan University of Technology, Wuhan ,Hubei, 430070，China; 2.
There have been some studies about carbon fiber composite drive shaft abroad since 1970s, involving the design of CFRP ply stacking, the joint between the CFRP tube and other components, the relationship between the stacking parameters and the performance of the CFRP drive shaft, and analysis of the mechanical properties of the CFRP drive shaft [2-5].
The performances of the CFRP tube can be affected by many factors during the winding process, such as the winding angles, the allocation of various winding angles, layer sequences, and fiber thickness, etc.
The mechanical joints include screwed connection, riveted connection, and so forth.
Since the drive shaft of the vessel is subject to dynamic load, the factor of safety could be set as 5, and then the allowable shear strength［τ］=35/5=7MPa.

All of these factors have been experimentally examined for laminar composites containing thin, compressive layers.
Factors that affect the threshold strength are reviewed.
Laminates formed at elevated temperatures with two or more materials develop stresses during cooling due to different thermal-elastic properties.
It will be assumed that both materials have identical elastic properties and identical critical strain energy release rates, Gc.
The above analysis assumes identical elastic properties and identical fracture energy for both materials.

Introduction: Additive manufacture, which fabricates net or near net-shaped components with comparable properties in successive layers based on a sliced CAD, could dramatically reduce the manufacturing cost and increase the material efficiency compared with the traditional processing technology [1].
However, the effects of preheating on the residual stress and distortion of the electron beam additive manufactured components needs further investigation since it involves more complex thermal, mechanical and metallurgical interaction than the welding process.
Denlinger et al. [7] built a model for electron beam AM process and determined the energy efficiency and emissivity for the wire-feed electron beam additive manufacture system.In an earlier study, a 3D transient fully coupled thermo-mechanical finite element model has been built and rigorously validated for the purpose of understanding the thermal-mechanical behavior during the deposition [8].
As for the conditions with various scan rate, interval cooling time, and scan path, the average temperatures of the substrate after the preheat are very close to each other and therefore the maximum residual stress is not strongly affected by these factors.
Different scan paths also slightly affected the maximum distortion.

Introduction Silk fibroin protein, the self-assembling structural protein in natural silkworm fibers, has been increasingly studied because of its excellent mechanical properties, biocompatibility, controllable degradation rates, and inducible formation of crystalline β-sheet structure networks [1-6].
These conditions which could potentially alter cell function and affect cell viability.
In sonication, mechanical vibration causes the formation and collapse of bubbles.
It is likely that several physical factors related to sonication, including local temperature increases, mechanical/shear forces, and increased air-liquid interfaces affect the process of rapid gelation of silk fibroin.

Surface Quality Prediction of Atmospheric Pressure Plasma Arc Cleaning Based on Least Square Support Vector Machine Yin Zhanmin1, a, Dong Xiaouan2,a and Meng Jianbing3,a 1 School of Mechanical and Engineering, Shandong University of Technology, China ayzm@sdut.edu.cn, bdongxiaojuan@sdut.edu.cn, cjianbingmeng@sdut.edu.cn Keywords: Atmospheric pressure, Plasma arc cleaning, Least square support vector machine, Water contact angle.
However, many factors affect the quality of APPA cleaning, such as the effective power of atmospheric pressure plasma arc, the arc spot diameter, scanning speed, the gas flow rate, the arc current, the distance between the nozzle and the workpiece, the pollutant type and thickness, substrate material properties and geometric dimensions, etc.
Factorial analysis of orthogonal experiment Factor v d Q I B K1 46.633 47.333 50.933 58.417 51.233 K2 50.400 50.750 51.100 50.817 49.933 K3 55.767 54.717 50.767 43.567 51.633 R 9.134 7.384 0.333 14.850 1.700 Table 2 shows the factorial analysis of orthogonal experimental of APPA cleaning.
Five parameters affect the water contact angle base on priority level: working current I (R=14.850), scanning velocity v (R=9.134), nozzle overhang d (R=7.384), intensity of the excitation current B (R=1.700) and gas rate Q (R=0.0451).
Gindy: Mechanical Sysstems and Signal Processing vol. 21 (2007), p. 1799-1814 [10] K.W.

Biology of bone tissue: structure, function, and factors that influence bone cells.
De Aza . α-Tricalcium phosphate: synthesis, properties and biomedical applications.
Review: Methods for improving the mechanical properties of glass.
Improvement of the mechanical properties of chitosan-alginate wound dressings containing silver through the addition of a biocompatible silicone rubber.
Wollastonite/hydroxyapatite scaffolds with improved mechanical, bioactive and biodegradable properties for bone tissue engineering. 

The efficiency of operation of deposits is determined by numerous factors, including the complex use of zeolite-containing rocks.
The study of the basic physical and mechanical properties of the initial components of the mixture of Portland cement with zeolite-containing rock, rheological and physical and mechanical characteristics of binders and mortars on its basis was carried out in accordance with the methods of existing standards.
Since the same degree of phase transformation leads to the same increase in porosity, it is obvious that other factors also have an impact on the strength reduction.
Methods of improving physical and mechanical properties of composite materials One way to improve the physical and mechanical properties of composite materials, including dry building mixes, is to fill the matrix of cement binder with highly dispersed mineral parts of zeolite-containing rock and fractional composition.
Graph of changes in the strength of solution samples in the age of 28 days with different ratios of silica component One way to improve the physical and mechanical properties of composite materials, including dry building mixes, is to fill the matrix of cement binder with highly dispersed mineral parts of zeolite-containing rock and fractional composition.

The obtained results suggest the ceramic coating on Ti-6Al-4V alloy improved its creep resistance Introduction Ti-6Al-4V alloy is one of the mostly used titanium alloys in aeronautical and biomedical applications because of its excellent combination of mechanical, toughness, corrosion resistance, and chemical stability properties [1-2].
However, the affinity by oxygen is one of main factors that limit its application as structural material at high temperatures.
The development of titanium alloys with the objective of improving the creep properties have been observed, although the surface oxidation limits the use of these alloys in temperatures up to 600°C [4].
In recent works was verified the increasing of the superficial properties of the alloy through the PIII nitrogen treatment [5-7] and ceramic coating [8-12].
Occurred a decreasing of steady state creep in function of the reduction of oxidation process, showing that for the Ti-6Al-4V alloy their life time was strongly affected by the superficial treatment that was submitted because the oxidation suffered by the material.

Until now, it has not been solved enough for the thermal properties of the hybrid journal bearing with super-high speed.
Because the heat is generated mainly from the oil film in the bearing, the characters of the temperature field of the oil film are the key factors to investigate the thermal properties of hybrid journal bearing.
As the main object to study, the liquid and its flow direction are the key factors to build the geometric model of the oil film.
(4) Defining the material properties.
Otherwise, the various material properties may also be defined as the functions of temperature considering demands.

However, on the one hand, this method is mainly affected by the accuracy of processing machine tool.
It has become one of the most important factors affecting the machining accuracy and the main obstacle to improve the machining accuracy, especially in the machining field of the high accuracy precision and ultra-precision.
Servo system is an automatic control system that takes the mechanical position or angle as the control object.
China Mechanical Engineering. 1998, 9(12): 48-52 [10] G.
Chinese Journal of Mechanical Engineering. vol. 42(2006), p. 201-205