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Introduction Among the various non-conventional machining methods Electro-Discharge Machining (EDM) is the most widely and successfully applied for high precision processing of various conductive materials regardless of their mechanical properties [1].
The resulting surface texture seriously affects product quality and applications [1, 4].
The pulse energy is calculated by the formula: We = Ve Ie tp (Ve = 30 V) whilst Ie and tp were taken into account as design factors in the factorial design.
In particular, as obtained by the sum of squares of the factors (fourth column of Table 1), Ie presents its highest statistical and physical significance on Rt and Ry.
As mentioned earlier Ra increases when both factors increase in the range considered in this study and especially for Ie which proved to be the most significant factor over the response variables; see also similar comments in [5, 8].

Effect of Moisture Content on the Tensile Properties of Viscose Filaments Lifeng Xu1,a, Jin Li1,b, Jisong Wu2, Pengcheng Zeng3 1 School of Textiles, Tianjin Polytechnic University Tianjin China 2 School of Textiles, Wuhan Textile University, Wuhan China 3 Xinhua Share Co., Ltd., Fujian China axlfcxlx@126.com blijin@tjpu.edu.cn Keywords: Viscose, Filament, Moisture Content, Strength Abstract.
The results showed that the strength property of viscose filament was decreased after moisture absorption.
The absorption or release humidity not only causes the change in the quality of material itself but also lead to a series of changes in the fiber appearance, mechanical property etc.
Strength of viscose samples This is because the fiber structure directly affects its physical properties.
It's also a factor that reduces its strength greatly.

It is apparent that the curing age, coating thickness and polymer-cement ratio are very important factors to improve the bond strength of PCS-coated rebar to cement concrete.
However, it has not been widely used by the problems that include economic efficiency, low bond strength to concrete, flexible resistance, fragility of a coating area, and various other factors.
Table 1 shows its properties.
Bond Properties of Epoxy Coated Bars in High Strength Concrete, Journal of the Architectural Institute of Korea, 6(1997)209-14
Tensile properties and adhesion of hybrid-type anti-corrosion polymer cement slurry, Journal of the Korea Concrete Institute, 20(2008)635-642 [15] Jo.

Light weight as a primary factor in combination with strength and durability properties of aluminium alloys brings financial benefits accruing not only from material procurement but along the whole chain of production, manufacturing, delivery and installation, maintenance and even disposal.
Material and Structure Light weight as a primary factor in combination with strength and durability properties of aluminium alloys brings financial benefits accruing not only from material procurement but along the whole chain of production, fabrication, delivery and installation, maintenance and even disposal.
Mechanical and physical properties influence thus performance: · Material specific weight is one third that of steel, strength is comparable to typical steel; the main load-carrying structure of an aluminium footbridge will exhibit 50% or less of the weight in steel [1].
Fig. 8: A display of norms and recommendations for footbridges over the rail (UK) Initial and Life Cycle Cost Although not the only factor affecting acquisition cost, structural weight plays a major role.
Aluminium offers excellent sustainable properties such as formability, functionality, flexibility, lightweight, recyclability, and corrosion resistance.

By using the right size gap between the plates to be joined, the mechanical properties of the joint can be improved in laser welding [15].
The primary objectives of this study include analyzing the effects of adhesive tape on joint integrity, evaluating the mechanical properties of the welded joints.
The mechanical properties of the joints were analyzed through tensile shear strength tests to assess their static properties.
Static properties and hardness of the AR steel.
Järvenpää, Influence of Air Gap Size to Mechanical Properties of Laser Welded Lap Joints, Mater.

If the material was proved to have the shape memory effect (SME) property, then it will be allowed to predict many thermo-mechanical properties.
So the method of showing the shape memory effect property (i.e. the programming method) gives the material science researcher and engineer a kind of independence and dispensation from the need for the chemists in the production of various polymers in their thermo-mechanical properties [6].
Therefore, many researchers have worked on the necessity of conducting extensive studies on the programming cycles of all types in order to get deeply in understanding their conditions, work basics, and the circumstances affecting them.
Before the yield point, this material show the properties of elasticity, and after the yield point, the properties of plasticity appear.
Darmawan, "Mechanical properties and curing characteristics of shape memory natural rubber", IOP Conference Series: Materials Science and Engineering, 541 (2019): 012012(1-6)

Test material of workpiece is Wulian Red granite（G3768）which physical properties are shown in Table 1.
Cutting tool Workpiece Kistler9257B Sieve net Sucker Worktable Computer Amplifier Figure 1 Test device Table 1 Material properties of Wulian Red granite Material properties Computation unit Numerical value Bulk density [kg/m3] 2700 Compressive strength [MPa] 9.289 Flexural strength [MPa] 8.542 Mohs hardness [No.] 7.4 Acid resistance [%] 96.95 Porosity [%] 2.23 Abrasion resistance [g/cm2] 0.36 Design of Experiment.
Combined effects on machining efficiency, three cutting parameters, namely cutting speed vc, feed speed vf and cutting depth ap are selected to form three orthogonal factors.
Table 2 Factors and level of orthogonal design Level Factors (A) Cutting speed vc [m/s] (B) Feed speed vf [mm/min] (C) Cutting depth ap [mm] 1 30 800 14.3 2 40 1000 14.4 3 50 1200 14.5 4 60 1400 14.6 Experimental Results and Data.
The experimental results are analyzed with analysis of variance, which is used for identifying the factors and the experimental errors significantly affecting the performance measures.

Introduction Nanofibers have been widely used as wound dressings [1-4], because they have a structure similar to native tissue, interesting mechanical properties [1], high surface area to volume ratio and high pore structure.
Morphology of the fibers produced by electrospinning depends on various factors: (a) material variables such as molecular weight and polymer concentration, ionic salts, and surfactants, (b) process variables for example applied voltage, waveform and polarity, electric field strength, flow rate, distance between tip and collector, and temperature, and (c) equipment variables including needle size and shape, collector assemblies, and auxiliary electrodes [7].
Photographs of resulting PVA/chitosan nanofibers on the collector under different applied electric potentials: (a). 10 kV, (b). 12 kV, (c). 15 kV The applied voltage also affects the thickness of the nanofibers membranes.
The charge on the jet stream is the key factor affecting the morphology of the resulting fibers.
Kalyon, Dynamics of electrospinning of poly(caprolactone) via a multi-nozzle spinneret connected to a twin screw extruder and properties of electrospun fibers, Polym.

A 2D cross-sectional geometry of the injector assembly, which incorporated both linear and non-linear magnetic properties of the corresponding materials, was modeled in ANSYS for 2D axisymmetric magnetic simulation.
Traditional solenoid fuel injection system suffered with lack of ability to operate under high speed applications mainly due to factors such as inertia; resulting in wear in valve seat, needle noise and unwanted vibrations.
Besides, the injector housing was composed of 1020 Steel, which is a low carbon steel having soft magnetic material properties.
It is important to check the quality of the resulting mesh, because properties such as skewness can greatly affect the accuracy and robustness of the CFD solution.
However, the mathematical model disregarded factors such as the cross-sectional area of injector outlet, turbulent flow and wall boundary conditions.

This phenomenon may deteriorate the mechanical properties.
Therefore, these contradictory or missing results from the literature, only focusing on the mechanical properties, highlight the need for a clear experimental microstructural investigation of the influence of the initial free nitrogen content and that of the amount of prestrain in the considered C-Mn steel welds.
Beyer, ‘Effect of artificial strain aging on microstructure and mechanical properties of a single-bead ferritic weld metal’, Mater.
Baird, ‘The effects of strain-ageing due to interstitial solutes on the mechanical properties of metals’, Metall.
Germaud, Eds., Mechanical spectroscopy Q -1 2001: with applications to materials science.