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In modern manufacturing industries, machining of titanium alloys are very difficult due to generation of high heat in the machining zone due to low thermal properties, results in wear and tear of the cutting tools which directly affects the machining efficiency as well as reduced the tool life.
Out of these eight factors pulse off-time were varied at two levels, and the other seven factors were varied at three levels each.
Table 2: L18 experimental design with variable factors levels and actual factors levels value Trial No.
From the results of ANOVA, tool material (factor-E) has the highest affect on surface roughness of electrode.
Current (factor-B) and pulse on-time (factor-C) significantly affect the surface characteristics.

Since the system is affected by a total force for a finite period of time this means that the system acquires mechanical momentum and energy, the question then arises how to accommodate the law of momentum and energy conservation.
Since the system is affected by a total force for a finite period of time this means that the system acquires mechanical momentum and energy, the question then arises if we need to abandon the law of momentum and energy conservation.
The mechanical power is given by: (2) J is the current density and E is the electric field.
(5) in the above I(n)(t) stands for the n’th derivative of the current, h is the typical distance between the current loops and is a geometrical factor depending on the loop's geometry.
DOI: 10.1140/epjp/i2016-16374-1 [5] Asher Yahalom “Preliminary Energy Considerations in a Relativistic Engine” Proceedings of the Israeli-Russian Bi-National Workshop ”The optimization of composition, structure and properties of metals, oxides, composites, nano - and amorphous materials”, page 203-213, 28 - 31 August 2017, Ariel, Israel

The factors to influence the surface morphology, the surface quality and the surface roughness are analyzed in order to take measures to improve the surface quality and reduce the surface roughness value.
The factors to influence the surface morphology, the surface quality and the surface toughness are analyzed in order to take measures to improve the surface quality and reduce the surface roughness value.
Two typical hard-brittle materials silicate glass and Si3N4 are used, the properties are shown in Table 1.
But the polishing quality of the surface is affected by many factors, such as the performance of the material itself, the material defects, the surface state before polishing in addition to the polishing technology.
Friction factors in smooth trapezoidal silicon microchannels with difrerent aspect ratios, International Joumal of Heat Mass Transfer. 2003. 46: 25 l 9-2525

Thus, the initial structure under the influence of the accepted structure-forming factors hereditarily determines the structural changes and the manifestation of the physical and technical properties of concrete and expanded clay concrete during long-term hardening.
Factors of structure safe operation.
Therefore, it is important to determine the dominant criteria affecting safety, the maximum limits of their permissible changes and methods for their determination and estimation.
In numerous works, methods have been proposed that make it possible to estimate the mechanical properties of concrete, its protective properties in relation to reinforcement, the condition of the reinforcement and, thus, the very condition of the building structure.
Integrated safety presupposes self-preservation of the main parameters of properties under the influence of external and internal factors.

Enhancement of surface integrity in a turning operation by one of the reliable factor is micro hardness.
Surface integrity includes the mechanical properties (residual stresses, hardness etc.), metallurgical states (phase transformation, microstructure and related property variations, etc.) of the work material during processing and topological parameters (surface finish and other characteristic surface topographical features [3-5].
Also it is used to determine the mechanical properties of metals such as tensile strength and elastic modulus.
Kannan and Kishawy [15] investigated the effect of machining parameters and particulate properties on micro hardness of the machined surface in metal matrix composite.
Also, it is used to determine the work hardening effect, subsurface alteration, surface integrity analysis, white layer analysis, to difference between machining affected zone and bulk material, mechanical properties, metallurgical changes, tool life condition and functional attributes of the machined components.

The properties of the powders and the HIP’ed compacts were investigated in this work.
Recently, numerous works have been conducted on the microstructures and properties of PM TiAl alloys.
High concentration in oxygen and nitrogen will degrade the mechanical properties of TiAl alloys.
Processing and properties of gamma titanium aluminides and their potential for aerospace applications.
Factors affecting particle size of atomized metal powder[J].

In this study, graphite as a sealing material for a high temperature gas control valve has been examined based on the factors that affect wear properties in a reciprocating wear test.
The mechanical properties and microstructures of W-25Re are reported at ambient the temperatures 1,371℃ and 1,926℃, after processing by three methods which are hot iso-static pressing, swaging, and extrusion.
Table 1 and 2 show the mechanical properties of graphite, HK-6 and rhenium alloy W-25Re which is reported in this research [6,7].
In general, specific wear rate are evaluated to compare wear properties.
(3) Where X1, X2, . . , Xk are the input factors which affect the response Y andk is the number of input factors asβ0, βi(i=1, 2, . . , k) and βij(i=1,2, . . , k, j=1,2, . . , k)are the unknown parameters (regression coefficients or parameters) and ε is random error.

The effects of electrodeposition composition and electrodeposition factors on alloy composition, cathode current efficiency; physical and electrochemical properties have been studied.
In addition, the factors affecting the critical current density are the solution concentration, temperature and diffusion coefficient.
Study on Improvement of Mechanical Properties after Heat Treatment of Hard Chromium Electrodeposits with Additives, Journal of The Korean Institute of Surface Engineering 47 (2014) 116-120
Effect of Phosphorous Acid Concentration on Mechanical Properties of Ni-P Electrodeposits, Journal of The Korean Institute of Surface Engineering 48 (2015) 100-104
Convergent Study of texture on the Mechanical Properties of Electrodeposits, J. of the korea convergence society 7 (2016) 193-198

Assessment of the sealing device of the pros and cons first to pay attention to the seal structure of leaks, causing the seals to leak a variety of factors, from design to manufacturing, from manufacturing to installation may have resulted in leakage.
The paper analyzes the leakage factors may result in the installation process.
Secondly, the seal gap is the first factors affecting the stability of the system in the ultrahigh pressure seal, decrease the seal gap is the main measures to reduce fuel tank leak.
JOURNAL OF MECHANICAL STRENGTH, 2004, 26(5) :556-559 [4] Fu Changan.
Influence of Structure Parameters on the Properties of Rubber O-ring Seal.

Influence Factors Analysis of Hammer Head and Screen Plate Life of CFB Coal Crusher Haiou Lv Department of Mechanical Engineering, Shenyang Institute of Engineering, Shenyang 110136, P.
Fig.1 Coal crushed mechanism of circular hammer crusher The Over-Wearing Material Factor and Countermeasure for the Head of Hammer The Material Factor.
Table.1 Alloy steel machinery property & metal phase structure alloy steel property examination result striking toughness (U-shaped notch test sample) ak 30 - 50J/cm 2 ＨＲＣ 45 - 50 metal phase structure tempered Martensite + carbon compounds Crusher's Hammer Head Structural Wearing Factor and Solution Wearing Structural Factor.
The Solution to the Structural Wear Factor.
MATERIAL FOR MECHANICAL ENGINEERING, 23(5), 1999