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Bending properties of GF/pCBT after saline aging test.
The mechanical properties such as tensile, flexural and shear of the composites depend tightly on the component of the material.
The highe the temperature and the humidity is, the fast decline of the mechanical properties of the material.
The two factors make the performance of the material undulated and also more complex compared with pure temperature or humidity effect on the material.
The mechanical properties of both pCBT resin and its GF composites affected by the service environment greatly, and temperature and humidity are the two key factors that influence the performance of the material.

Due to the nature of solid rocket propellants it is important to know their thermal and mechanical properties which may affect the proper operation of the rocket engines.
A powerful technique for determining mechanical properties of solid rocket propellants is the dynamic mechanical analysis [10].
These properties are dynamic storage modulus E’ which represents the elastic properties of material, dynamic loss modulus E’’ which represents the viscous properties of material and tan(d) = (E’’/E’) which represents the damping of material [3].
Mušanić and Sućeska [6] have studied the dynamic mechanical properties of double base rocket propellant artificially aged at temperatures of 80, 85 and 90 °C, in order to detect and quantify changes in the dynamic mechanical properties caused by ageing, and to investigate the possibilities for the prediction of service lifetime.
In the near future, further study of thermo-mechanical properties of different types of solid rocket propellants are planned.

Multi-layered metal composites have received considerable attention due to their improved mechanical and physical properties.
Mechanical properties of processed material were evaluated using the uniaxial tensile test and shear punch test method (SPT).
Mechanical properties of Al / Ni / Cu were studied during different accumulated bonding cycles (ARB) [13].
SPT was carried out to analyze the effects of ARB process on mechanical properties of composite strips.
Also, the influence of SPD on the mechanical properties was investigated in uniaxial and shear loading.

The chemical composition and mechanical properties of this material is presented in Table 1.
Chemical composition and mechanical properties of brass: JIS H3250 C3604 Chemical composition (%) Cu Pb Fe + Sn Fe 57.0-61 1.8-3.7 <1.2 <0.5 Mechanical properties Tensile strength, MPa Elongation, % Hardness, HV 335 20 80 Machine and Cutting insert.
The experimental factors and levels are shown in Table 2.
Factors and levels in dry turning.
The factors that significantly affect the surface roughness are speed and feed.

The Noise Test System and Solution Measures of Vibration Test Shijia Kong1, a , Jinyao Lin2,b , Ming Yang3,c , Jiacong Chen4,d 1 Room B120, No.25,Xinghua North Road,Daxing District,Beijing,China 2 Room B204, No.25,Xinghua North Road,Daxing District,Beijing,China 3 Room B120, No.25,Xinghua North Road,Daxing District,Beijing,China 4 Room B120, No.25,Xinghua North Road,Daxing District,Beijing,China amrkyouxiang@126.com, bjinyaoli@bigc.edu.cn cym2006come@163.com,d90236947@qq.com Keywords: Vibration test systems, Noise, Sensor part, Noise sources, Measures Abstract.The noise of the test system in the vibration test,is an important factor affecting the test results.This paper first introduce the classification of the sources of noise in the vibration test system,and explain the ways of noise interference and how to reduce the noise interference.Then given the specific measures to reduce the noise in the vibration test system,which can improve the precision and reliability of results
In the vibration test, many factors can affect the vibration test results, including the vibration test system which is an important factor in affecting the test results.
Electromagnetic field coupling sets interference refers to a circuit of the current change go through the magnetic pathways affects another a circuit.
References [1] M.Z,H.T.Zhou and P.L.Zhu:Mechanical Vibration and Noise(Science Press,China 2008)
[2] S.Y.Hu and H.J:Mechanical Vibration and Shock Testing Technology(Science Press,China 1983)

Finite Element Analysis on Mechanical Properties of Light-weight Aggregate Concrete Composite Slab Zhang yankun 1, a, Zhang shaoyu 2,b ,Zhou xiaoer 1,c 1 College of Architecture and Civil Engineering, North China University of Technology, Beijing, P.R.
The loading process, includes the slab cracking, the yielding of steel plates, damaging of slabs are simulated, and the influencing factors, such as male pin, thickness of deck, and spacing of transverse shear reinforcing bars, etc. is studied.
Mechanical properties of composite slab are affected by many factors, including the thickness of the steel plate, spacing of transverse shear reinforcement bars, and number of male pins.
Nine composite slab have been designed to study mechanical properties of composite slab,.
Summary Adopting finite element analysis software, the mechanical property of light-weight aggregate concrete composite slab is studied.

Exploration of the Defect’s Effect on the Mechanical Properties of Different Orientated Nanowires H.F.
Molecular dynamics (MD) simulations have been carried out to investigate the defect’s effect on the mechanical properties of copper nanowire with different crystallographic orientations, under tensile deformation.
For example, great deals of numerical studies have been carried out to investigate mechanical properties of nanowires under uniaxial loading condition.
Because of the nanometre size scale, the presence of defects is one of the most influential factors in determining the nanomaterials’ properties.
Since mechanical properties of the nanowire are greatly influenced by the surface effect, the defects located on the surface will be considered.

Material Properties and Natural Frequency of Stator Core of Large Turbo-Generator Yixuan Wang 1, a, Ying Wang 2,b 1 School of Mechanical Engineering, Xi’an Polytechnic University, Xi’an 710048, Shaanxi, China 2 School of Information Technologies, J12, University of Sydney, NSW 2006, Australia a wyingping886@126.com., b ywan7763@uni.sydney.edu.au Keywords: Large Turbo-Generator, Stator Core, material Properties, Natural Frequency Abstract.
The material properties of stator core are mainly related to its laminated process and assembly as well as the operating temperature of turbo-generator.
Introduction The material properties of stator core, such as magnetic permeability,electrical conductivity ,thermal conductivity, Young modulus, Poisson ratio, mass density, etc., are key factors affecting on its dynamic characteristic besides dimensions and shapes.
In paper [1, 2], a new nonlinear anisotropic model for soft magnetic materials is proposed for determining electro-magnetic and mechanical properties.
Generally, the material properties of stator core is non-homogenous anisotropic , changes with operating temperature and uncertainty variables.

This kind of fibres presents very high mechanical and morphological properties.
This kind of fibres presents very high mechanical and morphological properties.
There are many factors that can influence the performance of natural fiber reinforced composites.
Several parameters impact on the fibre properties.
The mechanical properties such as the failure strain and the impact energy are strongly affected by the reinforcement hemp fibres.

The studies summarized were examined to determine the factors that most significantly affect group efficiency.
Selection table of reduction factors of Rfront and Rside can be shown as follows: Table.1.
Fig.3 Bending moments of front and back pile when the lateral loads along the Y-axis direction taking the pile-soil interaction behavior into the consideration Soil lateral resistance can be reduced by applying the deduction factors to analyze the mechanical properties of group piles.
The reduction factors are combined and we apply them to p-y curve for lateral analysis.
Then the deduction factors are applied to the soil reaction.