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Table 2 Mechanical properties of fabrics hydroentangled nonwoves Items Hydroentangled nonwoven fabrics Normal PET fiber Hydrophilic PET fiber MD Tensile stength(N) 101.39 559.63 CD Tensile stength(N) 26.51 181.46 Entanglement coefficient(EC) 1.12 7.16 It can be seen that both MD and CD tensile strength of the high strength hydrophilic PET hydroentangled nonwoven fabrics are significantly higher than normal PET hydroentangled nonwoven fabrics from Table 2.It is said that the tensile strength of the hydroentangled nonwoven fabrics positively correlates with the hydroentanglement intensity.
Fig.3 Percentage of broken fiber and average pull-out force Cohesive force of fibers in the pre-webs The authors did some research on the fiber tensile strength, crimp, hydrophilicity of fiber surface and friction properties in order to find influence rule between the fiber properties and spunlaced nonwovens performance but there is no ideal results [1].
In this paper further uses the fiber cohesion index to study the influence factor of fiber entanglement.
Some researches about fiber cohesion on the quality of yarn forming have found that cohesive force of fibers is affected by the fiber crimp, fiber length, fiber linear density, friction and surface properties which are influencing factors about the fiber entanglement during spunlacing process [8].
The Influences of Hydrophilic Finishing of PET Fibers on the Properties of Hydroentangled Nonwoven Fabrics [J].Journal of Engineered Fibers and Fabrics, 2010, 5(4):26-32 [2] P.

Chemical composition and mechanical properties are shown in Tables 1 and 2.
Mechanical properties of AISI 4340 Yield stress (MPa) Ultim. stress (MPa) Mod. of Elasticity (GPa) Hard.
In this regime, the critical stress-intensity factor range at failure, DKc, is given by KIe (1 - R), where KIe is the elastic fracture toughness or maximum stress-intensity factor at failure.
With an identical stress intensity factor range, a higher R-ratio results in a higher crack growth rate.
It observed that the FCG affected by different stress ratios.

The characteristic of their ceramic-technological properties is given.
The dependence of physical and mechanical properties and ceramic specimen color form the vanadium slag amount in charge is established.
Besides, the influence of pigments on physical and mechanical properties of products is studied [15].
The given work is aimed at studying the dependence of the decorative, physical and mechanical properties of ceramic materials with matrix structure from vanadium slag addition.
Such improvement of physical, mechanical properties and a high coloring effect caused by slag chemical composition (Table 2).

Through analyzing the main factors of the air material suppliers, this paper constructs an assessment index system of the air material suppliers.
This article is based on the objective analysis on the basis of the factors influencing the material supplier quality assurance ability which is combined with the actual situation of the air transport enterprises, according to the air quality standard requirements.
The basic principle of fuzzy comprehensive assessment method is first to determine the assessment factors’ grade standard and the corresponding assessment index weights, and then determine the membership degree of assessment indexes which is used to describe the assessment factors of fuzzy boundaries, so as to construct the assessment index fuzzy assessment matrix, then use the weighted average fuzzy composite operation to ensure the level of the assessment objects [7].
According to the principle of maximum membership degree, it can be seen that the Air Materiel supplier assessment factors in aviation materials quality indicators and corporate reputation index assessment rating scale is relatively low.
Bai: Journal of Mechanical Science and Technology, Vol.25 (2006), p.1404-1407.

The main required properties are then : creep, thermal fatigue, and oxidation resistance.
Some Properties of the Niobium Ferritic Steels.
Austenitic Stainless Steel for Structural Automotive Applications Required Mechanical Properties.
The above description of mechanical properties of austenitic stainless steels points out that various grades can be chosen to fit to the design requirements.
It allows to obtain a good compromise between high mechanical properties and a greater life time in severe conditions.

The main attractive feature of MMCs is their high strength-to-weight ratio, excellent mechanical and thermal properties (compared with that of conventional material and alloy), improved fatigue and creep characteristics, and better wear resistance [5–11].
Aluminum alloy reinforced with alumina and silicon carbide as well as with aluminum nitride (Al/AlN has been extensively investigated by the scientific community, as the integration of these materials produces excellent mechanical and thermal properties to be used.
Tool wear is the most critical measure of quality in many mechanical products.
This paper presents the machining factor that affects the machinability of 10 wt% AlN reinforced with the AlSi alloy when machined during the end milling process and by the uncoated carbide of the cutting insert.
Heat treatment was conducted to increase the mechanical properties of the Al-SiC MMC.

During mass production, one of the key factors in costs reduction is to enhance lifetime of the molding tools.
In this study, a novel material made of a nickel-phosphorus-polytetrafluoroethylene (Ni-P-PTFE) compound was plated electrolessly on experimental dies to study relevant properties.
Since Ni-P-PTFE exhibits strong anti-adhesion properties, it is noted to improve the lifetime of the dies.
In conclusion, the adhesion phenomenon is interpreted via hydrophobic contact angles showing that hydrophobic contact angle of Ni-P-PTFE surfaces is smaller when compared to Ni-P surfaces which infers the anti-adhesion properties of Ni-P-PTFE materials.
Finally, hydrophobic effects in term of contact angle measurement are used for demonstration of anti-adhesion properties of Ni-P-PTFE plated surface.

Investigation of Load Path Effect on Thickness Distribution and Product Geometry in the Bulge Hydroforming Process Majid Elyasi, Hassan Khanlari and Mohammad Bakhshi-Jooybari Faculty of Mechanical Engineering, Babol Noshirvani University of Technology, Babol, Iran Department of Mechanical Engineering, Tabriz University, Tabriz, Iran Faculty of Mechanical Engineering, Babol Noshirvani University of Technology, Babol, Iran elyasima@yahoo.com, Hasan.khanlari@yahoo.com, bakhshim@yahoo.com Keywords: bulge hydroforming; load path; finite element simulation Abstract.
The thickness distribution and geometry are the key factors that affect the performance of hydroformed parts.
Tube tension tests were performed for determination of mechanical properties of SS316L tube.
The mechanical properties and dimensions of the initial tubes which were used in experiments are given in “Table 1”.
As shown in “Fig. 7”, initial axial feeding does not affect on the bulge radius of the part at the wave crest, but the bulge radius of the part at wave trough decreases with increasing of initial axial feeding.

Introduction The details on the coating formation mechanism and properties of the cold sprayed layers in the cold spraying technique have not been elucidated thus far.
This critical velocity depends on the mechanical properties of the substrate and the particles, the presence of an oxide layer, and the diameter of the particles.
From the results of the above studies, it can be concluded that the factors that influence the deposition efficiency in cold spraying are: (1) gas temperature, (2) particle mass (diameter), and (3) particle velocity.
All of these factors depend on the kinetic energy of particles.
The particle diameter and spray conditions are found to affect the quality of the deposited layer.

Therefore, research of aircraft on the ground deicing process and influence factors of deicing efficiency maybe contribute to these issues.
Finally, some simulations on the influence factor of deicing process are implemented.
Accordingly the temperature and flow quantity of deicing fluids are important influence factors for the efficient of aircraft deicing on the ground.
The influence factors on deicing process were researched by simulation.
Physical Properties of Aircraft De-icing and Anti-IcingFluids[R].