Search results

It is indicated that the content of sulfur has great effect on the mechanical properties of GH625.
There are many factors which influence the thermal processing quality, the content of S element in the alloy which is the main influencing factor.
The effects of sulfur on the properties of GH625 alloy have not been investigated previously yet.
As the S increases the material is brittle fracture under low temperature, and with the increase of temperature, the low melting point of sulfide seriously affect the thermal processing properties of materials.
[6] BAO Xingcai.The Effects of Nb on Microstructure And Mechanical Properties of The ZM6 Alloy[D].Harbin: Harbin aviation industry group,2007

Hence there is a large scope seen in enhancing the mechanical properties of 5086-O in the interest of its industrial applications.
Vickers hardness test and tensile tests of base material and friction stir processed material was performed at room temperature for evaluating mechanical properties.
Fig. 3 Color coded orientation maps (a) As received condition (b) Single pass FSP (c) Multipass FSP (d) Inverse pole fig. key Mechanical properties Hardness.
Fig. 4 Hardness in the NZ centre for as received and friction stir processed condition Fig. 5 Mechanical properties in the as received and friction stir processed condition Tensile Properties.
The results reveal an increase in yield and ultimate tensile strength of FSP material for both type of processing than the as received material, grain refinement looks to be the dominant factor for the increase in strength properties [11].

Effect of Fiber Coating on Properties of Ni-MF/Al2O3 Composites Luhao Liu, Zhi Wang*, Guopu Shi, Yan Ma, Shuai Feng and Chao Wu School of Materials Science and Engineering, University of Jinan, Jinan 250022, China * Correspondening author: wangzhi@ujn.edu.cn Keywords: Ni; Mullite Fiber; Al2O3 Coating; Mechanical Properties Abstract.
Given the characteristic of the Al2O3 coating, a series of factors are taken into consideration so that the transition layer can do well in combining fiber and matrix.
Mechanical Property Analysis of Composite.
Through the design of orthogonal test, the mechanical properties of MF-Ni/Al2O3 composite were studied with the addition of MF and Ni.
At the same time, Ni phase can serve as the second phase in order to improve mechanical properties of composites.

Thermoelectric Properties.
Low dimensional Bi2Te3-based materials, which show special quantum confinement effect and transport properties [4], have been proved to be an effective route to improve thermoelectric properties [5,6].
Annealing effect on thermoelectric properties was examined in high vacuum of 2×10-4 Pa at 373-573 K for 1 h.
The antistructure defect concentration is directly related to carrier concentration, and it affects the electronic transport properties.
All these factors lead to a decrease of activation energy with increase of the annealing temperature.

As the relation between mechanical property and process parameters is difficult to establish, attempt has been made to derive the empirical model between the processing parameters and mechanical properties using statistical methods [1].
Operator gets the part with comparable or higher mechanical properties.
Slota, Optimization of FDM Prototypes Mechanical Properties with Path Generation Strategy, Applied Mechanics and Materials, 474 (2014), 273-278
Janecki, S.Adamczak, Investigating the influence of selected factors on results of V-block cylindricity measurements, Measurement, 44/4 (2011), 767-777 [5] V.
Shapoval, The study of mechanical properties of suture anchor using a modified polymer component, In: Bulletin of National University " Lviv Polytechnic ".

Main factors affecting dielectric properties of alumina ceramics are density (that is to say, porosity), impurities, grain size and so on.
Additions always used for lowering sintering temperature and restraining grain growth to improve mechanical properties during sintering, such as MgO, TiO2, La2O3 and Y2O3[1-3].
Dielectric properties of Al2O3 ceramics.
However, excess Y2O3 have adverse effects on dielectric properties.
Alumina ceramics via HP showed better dielectric properties.

Confined-accelerated Creep Tests to Determine the Creep Reduction Factor Zhen Zhang1, Duoyi zhu, Tengfei Chen, Tao Wang 1School of Civil Engineering at Central South University,410075,Changsha Keywords: Creep, Time-Temperature Superposition Principle, Geogrids, Confined and Accelerated Creep Tests, Master Curves Abstrct: The creep characteristics of geogrids is one of the most important factors affecting its permanent in reinforced soil structures. currently, most of the creep tests are under unconfined conditions, the results deviates significantly from the real status in the application .
Theoretical background Elevated temperatures can accelerate chemical and physical process,it is also applicable to the creep properties of materials.The essence of time-temperature superposition principle is to accelerate creep properties at elevated temperatures .
Concrete creep environmental factors control room is used to control the test’s temperature , humidity and other conditions.
Figure 2 The proposed design of slope reinforcement The design of geogrids must consider four strength reduction factors:reliability of production stability(), environment-microbe - pH effects(), mechanical damage when laying in different filler(),connecting strength damage caused by joint effect().
[3] ANG Dong,Study on Confined Creep Properties of Geogrids. .2012.5

The results showed that the counterface roughness is the most significant factor in affecting the wear rate, followed by applied load, sliding speed, and fiber loading.
The ANOVA is to investigate which control factor significantly affects the tribological properties of the composites.
This shows that the number of yarn reinforced into the polymer matrix is important in affecting the frictional contact between composites and the sliding counterface.
This can be attributed to the increase in composite’s surface mechanical properties with the increase of fiber loading and different properties of transfer layer materials produce during wear process.
Mi, "Bamboo fiber-reinforced polypropylene composites: A study of the mechanical properties," Journal of Applied Polymer Science, Vol. 69, (1998) 1891-1899

With the application of the mass scaling factor technique, the full history of spinning process is performed successfully.
Theoretical foundations The mechanical equilibrium.
The coupled thermo-mechanical problems.
In the coupled thermal-mechanical analysis, both of mechanical equilibrium and thermal equilibrium must be satisfied.
And the properties of temperature dependent material should not be neglected.

In the present work, RDX (Cyclotrimethylene trinitramine) has been used in successive increments replacing AP (Ammonium Perchlorate) in number of batches by varying the percentage of solid loading, and studied their different properties such as viscosity build-up, mechanical and ballistic properties.
Nitramine-based energetic compounds are used in solid composite propellant formulations to increase the energy release, i.e., specific impulse with improved mechanical properties [3].
Generally, the adhesion between the binder and the oxidizer (AP) particles is improved by the use of bonding agent to achieve better mechanical properties.
Complexity of the generated dependences is influenced by many factors such as solid component quantities; type of binder, curing agent, particle size distributions and theirs shapes quantity and type of bonding agent and the like.
The mechanical properties of the propellant compositions are evaluated.