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Properties of composite materials are often predicted from properties of its component materials.
This becomes a challenge with natural fibers because of its tendency to exhibit variability in properties that is caused by different factors [1].
Properties of the Abaca Fiber.
For an improved assessment of the mechanical properties of the fiber, Weibull analysis was performed using three different gauge lengths, i.e. 15 mm, 25 mm and 35 mm, obtained from the previously determined useful length and tensile strength distribution are shown in Fig 3.
Properties of the Abaca-fiber Reinforced Composite.

Introduction Machining of aerospace materials is a challenging task due to its inherent properties viz. high strength and hardness which increases its cost of shaping [1-2].
Table 2 represents the various control factors and their levels.
The increased rate of material removal is due to the change in wire electrode properties, which reduces the wear and increass the sparking effeciency during WEDM.
Fig. 2 Residual plots for MRR Experimental Validations In present case, confirmation experiment was required because optimal solution for factors and their levels are not matched with experiments of OA experiments (L18).
The pulse on time and tool electrode are the most siginficant parametes affecting MRR.

Dielectric Properties of BaTi5O11 Ceramics at Microwave Frequencies Cheng-Hsing Hsu1, a, Wen-Shiush Chen1, Hsin-Han Tung1, Pai-Chuan Yang1, and Jenn-Sen Lin2 1Department of Electrical Engineering, National United University, No. 1 Lien-Da, Kung-Ching Li, Miao-Li 36003, Taiwan 2Department of Mechanical Engineering, National United University, No. 1 Lien-Da, Kung-Ching Li, Miao-Li 36003, Taiwan ahsuch@nuu.edu.tw Keywords: Microwave Dielectric Properties, BaTi5O11 Ceramics, Sintering.
The compounds in the binary system of BaO–TiO2 have been reported to possess excellent microwave properties.
The increase in density may directly affect the microwave dielectric properties.
Conclusions The microwave dielectric properties of BaTi5O11 ceramics were investigated.
Compared to previous reports, a significant improvement in the dielectric properties and sintering conditions has been accomplished.

However, this method is limited in analyzing safety factor for only one slope model each time.
The slope is also affected by vibration wave as blasting occurs often during mining.
The physical and mechanical properties of material is showed in the picture, too.
The sides of the model were fixed in horizontal direction. 3.3 Computation Table 1 Safety factor of slope with different angle at an interval of 5 Gradient /(°) 30 35 40 45 50 55 60 F1 1.252 1.084 0.951 0.846 0.757 0.679 0.618 F2 1.252 0.951 0.757 0.618 F3 1.252 0.846 0.618 The safety factors in Table 1 were calculated through FLAC3D at first.
F1,F2,F3 represent safety factor at interval of 5,10,15 respectively and F means safety factor calculated from FLAC3D, and Error .

Using variables intimately related to motion errors and under constrained by cost, optimization model is established, then it is solved with Monte Carlo simulation method to compute top ten key factors contributed to errors and obtain distribution probabilities of both position error and gesture error.
At the same time, the top 10 effect factors of error motions are obtained.
In the steady-going mass production, the size and matter property of parts are approximate to normal distribution.
Key factors contributed to errors Table 4.
Using the geometric errors extracted from the motion errors, thousands of simulations have been implemented with varied tolerances，through what the predominant impact factors have been obtained.

So it is meanful to use some technologies to improve the comprehensive properties of the metal materials.
As we all known, the structure of the materials’ organization affect the using properties directly.
So, improving the surface properties of the material is meaningful to the improvement of the whole active service of the metal material.
Using the nano technology to improve the comprehensive properties and lifespan of the metal matericals is with big application potential and market prospect.
The literature[13] studied the influence of the surface mechanical attrition treatment (SMAT) to the surface properties of the alloy.Zr-4.

One of the important properties in SLM is thermal conductivity of metal powder.
The part is a consolidated material where its mechanical properties and appearance are influenced by powder materials and fabrication parameters.
Thermal conductivity is important thermophysical properties for various design applications.
Therefore, in this paper, the thermal conductivity of metal powder and consolidated material and also factors that affects them are discussed.
[9] L.Taylor, Metals Handbook 1: Properties and Selection of Metals, 8th ed., American Society for Metals, Metals Park, Ohio, 1961.

To design rubber dampers requires designers to know their characteristics very well, among which, static and dynamic behavior and characteristics are the key factors.
The technological level, production scale and product variety of rubber damper industry are dependent on users who often develop products that have similar shape but totally wrong structure or material properties as a result of insufficient knowledge.
He, Mechanical Property of Polymer, University of Science and Technology of China Press, Beijing, 2008
Lin, Vehicle System Dynamics, Mechanical Industry Press.
Lin, Vehicle system dynamics, Mechanical Industry Press, Beijing, 2005

Its properties stem from a fine-grained microstructure afforded by the low carbon content, microalloying and thermo-mechanical processing used in its production.
Although HSLA-65 has high weldability, the heat input associated with welding can be detrimental to its mechanical properties.
These factors can help diminish welding induced distortion, degradation of mechanical properties in the HAZ and fabrication costs.
Further testing is required to fully develop an understanding of the mechanical properties of the weld metal and HAZ.
Svensson: Control of Microstructures and Properties in Steel Arc Welds (CRC Press, Boca Raton 1994)

Introduction Glass waste pollution is a global environmental challenge affecting many regions of the world.
An experimental program was carried out, including fresh state properties, mechanical and durability properties.
Tests were conducted according to national (NTP) and international (ASTM) standards to analyze the physical and mechanical properties of fine and coarse aggregates.
Methodology A The experimental procedures used to evaluate the mechanical properties of pervious concrete mixtures that include residual glass powder will be detailed below.
Finally, one of the factors contributing to the increase in compression strength of concrete with RGP is the fineness of its particles and the level of replacement [10].