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The meaning of classification into families is since members of one family have certain common properties: similar properties, methods of processing, and often, very similar application [1,2].
What turned out to be exceptional about the resulting fibers were their mechanical properties.
Limiting factors for the wider application of polymers and fiber-reinforced polymers (FRPs) are relatively poor performance under impact loads due to their lack of plastic deformation.
Polymers present a particular challenge for shaping their properties because their properties make them that way.
However, polymers that can be easily and selectively depolymerized into monomers usually require low-temperature polymerization methods and have poor physical properties and mechanical strength for practical use [20].

Geers2,c 1Netherlands Defence Academy, PO Box 10000, 1780 CA Den Helder, The Netherlands 2Eindhoven University of Technology, PO Box 513, 5600 MB, Eindhoven, The Netherlands at.tinga@nlda.nl, bw.a.m.brekelmans@tue.nl, cm.g.d.geers@tue.nl Key words: Nickel Base Alloy, Degradation, Modelling, Microstructure, Mechanical properties.
The factor F is a cross slip factor that will be discussed below, while, m and n are material constants.
As will be shown later, degradation of the microstructure changes the spacing between precipitates and therefore affects the Orowan stress and the slip rates.
Therefore, a cross slip factor F based on the value of is incorporated to enhance the slip rate of the slip systems.
The results indicate that the high creep strain regions at the suction side of the blade are hardly affected by the degradation.

This research examines the friction and wear characteristics, as well as the mechanical properties, of EPDM (ethylene propylene diene monomer) rubber filled with oleamide.
These results indicate that both thermal and water-glycol aging negatively impact the mechanical properties of EPDM, reducing its elasticity and tensile strength.
Tribological properties of the PA46 and Teflon added PA46 polyamides.
Physical and tribological properties of PTFE micropowder-filled EPDM rubber.
Effect of Thermal Aging on Mechanical Properties of EPDM Rubber.

During electron beam processing, the mechanical analysis of metal powder molten pool temperature following focusing current are studied.
Introduction Melting effect and processing quality of EB processing have a close relationship with processing parameters such as acceleration voltage, beam intensity, processing speed, EB focus position and quality, physical parameters(material properties etc.), and geometry parameters(the workpiece thickness etc.)
High-speed EB focused by electromagnetic system in electron gun generally requires a high vacuum in the space, and its trajectory shape is generally with characteristics of the smallest diameter of cross section and largest electron energy density. 2.1 Influence Factors Through the static lens, leaving anode hole the EB gradually diverge, then passing a short magnetic lens, the EB becomes focused again.
Fig.2 Scheme of electron optical system of electron gun Da Dao-an [5] simulated the main factors affecting on the EB focus include: (1) Thermal velocity.
To realize precision control of energy input of 3D rapid prototyping, it is necessary to analysis and control the effect of various parameters such as physical factors, geometric parameters of electro-optical systems, processing parameters on the focal spot size of EB. 3 Method of Varying focus current-extremum temperature 3.1 Experiment Principle Paolo Ferro et al [4] and Wu Hui-qiang et al [6] proposed the heat source model studied on EB processing includes lineal heat source model, rotary-Gauss body heat source model, moving double-ellipsoid heat source model, cone heat source model, and combined heat source model.

Introduction Porous silicon carbide (SiC) ceramics have been greatly anticipated as filters and catalyst supports, since among ceramic materials SiC has excellent thermal stability, good mechanical properties and corrosion resistance.
In filter applications of porous materials, porosity and pore size distribution are important factors that affect the performance of products such as permeation.
Thus, pore properties such as pore size and surface area, may be affected by dimensional changes.
In this study, the pyrolysis of polycarbosilane (PCS) and the role of filler in affecting the retention of micro/mesopores were investigated.
Conclusion Mesoporous silicon carbide with and without SiC filler was prepared from the pyrolysis of polycarbosilane (PCS), and the relationship between pyrolysis temperature, pore properties and surface area was investigated.

In order to understand the factors that affect the mechanical strength, effect of precursor solubility was studied on the mechanical strength of the hydroxyapatite (HAp) block using two different precursor blocks, αTCP and beta-tricalcium phosphate (bTCP), which were chosen since they have the same chemical composition but with different solubility [5].
The result implied that mechanical property of CO3Ap foam would be improved using bTCP form precursor instead of αTCP form.
The mechanical property was compared to CO3Ap form prepared from αTCP form to identify whether the mechanical property could be improved or not.
LeGeros, Properties of osteoconductive biomaterials.
Ishikawa, Effect of precursor’s solubility on the mechanical property of hydroxyapatite formed by dissolution-precipitation reaction of tricalcium phosphate, Dent.

Creep property of solder alloys is one of the important factors to effect the reliability of surface mount technology (SMT) soldered joints.
The Ref.[1,2] researched the relationship between creep properties, microstructure of SnAg, SnCu and SnAgCu lead-free soldered joints and its rupture lives.
It had been proved feasible and useful to add tiny rare earth (RE) in the lead-free solder to improve or increase the creep properties of soldered joints[4-7].
But there are very few reports about the study of creep properties and reliability of low Ag content SnAgCuRE soldered joints[8].
Results and discussion Creep properties of Sn2.5Ag0.7CuXRE lead-free soldered joints.

It is sometimes very difficult to define a reliable FE model for real mechanical structure, because a lot of its system parameters or properties are uncertain [10].
Particularly, in the case of FE analysis, the mechanical properties of the used materials are very hard definable, and therefore an important source of uncertainty [11].
The uncertainties in the model parameters can be taken into account by representing the affects of scatter by fuzzy numbers with their shape derived from statistical data.
Due to this numerical approach, we can analyze mechanical, technological, service and economic properties of the investigated structures more authentically.
Vaško: Analysis of the Factors Influencing Microstructure and Mechanical Properties of Austempered Ductile Iron.

The pros and cons of the five rubbers are analyzed in friction and wear properties of the above experimental.
TPU is the most versatile engineering thermoplastics with elastomeric properties.
The mechanical properties, rheological properties, resistance to oil, solvent properties and electrical properties of these two kinds of blends are investigated.
The temperature change has become a major factor which influences the fluctuations in the friction coefficient, but the determinants of the coefficient of friction are the material properties.
An investigation of mechanical and rheological properties of PVC/PVC blends: influence of anhydride additives, mixing procedure and PVC form.

However conventional fusion welding processes often leave defects, such as porosities and hot cracks in the weld, which declines the mechanical properties of magnesium alloys [3].
The thermal cycle or temperature distribution is a key factor to affect the plastic flow and the final microstructure and mechanical properties of the weld using FSW.
Wang et.al [6, 7] measured the thermal cycle of aluminum alloys during FSW by means of embedding thermocouples and found that thermal cycle influences the mechanical properties of weld by changing the size and distribution of the precipitates.
The aim is to establish a base to correlate the temperature distribution of FSW with the dynamical recrystallization, microstructure and mechanical properties for the weld along different locations for magnesium alloys.
Zhang: Materials for Mechanical Engineering Vol.32, No. 5 (2008), p. 87 [9] J.