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Introduction γ-titanium aluminides (TiAl alloys) are considered as top candidate materials for high-temperature applications due to their attractive properties such as low density, high specific strength, high specific stiffness, hig temperature strength retention and resistance against ‘titanium fire’[1-4].
To evaluate the mechanical properties of the moulds at room temperature, three-point bend tests were conducted on the green and fired bars at room temperature.
The presence of reaction layer is responsible for the inferior mechanical properties.
It was demonstrated that the casting parameters are important factors that can significantly affect the formation of reaction layer.

Daemi1,c 1 Faculty of Mechanical Engineering, K.N.
Introduction Surface modification by coatings has become an essential step to improve the surface properties such as wear, corrosion and oxidation.
This would allow an optimization of the processing parameters and coating composition in order to achieve properties desired for various applications.
Artificial neural networks In the present work the ANN model was established for predicting micro-hardness properties of coatings that was based on feed-forward multilayer perceptron.
This process consists of adjusting the values of the connections (weight factors) between neurons.

The extraordinary mechanical, electrical [2], thermal [3] and molecular transporter properties of MWCNTs make them ideal candidates for large application potential.
Hence, the mechanical properties and graphitic structure of crude MWCNTs are retained [11].
Several factors might account for such reduction, for example, the structure erosion of MWCNTs [14] and transformation of the existing functional groups into gaseous.
This result indicates that the nitric acid treatment of MWCNTs does not affect the crystalline structure of MWCNTs.
Effect of carbon nanotubes on properties of graphite/carbon black/polypropylene nanocomposites.

There are many factors due to these deteriorations, such as ageing, corrosion of steel, a change of use or the environmental effects such as earthquakes, especially the disastrous Sichuan earthquake on 12 May 2008 [2], in which so many structures were damaged or deteriorated need to be reinforced.
Properties of materials.
The mechanical properties of concrete, steel reinforcing and high strength of CFRP sheets were given in Table 2.
Table 2 Mechanical properties of beam materials Material Dimensions (mm) Yield strength (Mpa) Compressive strength (Mpa) Tensile strength (%) Elastic modulus (Gpa) Concrete C20 - 22.8 - - Steel reinforcing D = 6 240 420 420 210 D = 8 330 490 490 210 D = 10 340 480 480 210 D = 14 410 555 555 200 CFRP sheets tf = 0.111 - - 3467 250 Experimental setup and measurements.
Although the ultimate CFRP strain decrease with increasing beam size or tensile reinforcement ratio, the precracked degree did not seem to be affected.

This paper discussed several factors affecting intergranular failure along prior austenite grain boundary of type CA6NM stainless cast steel with special emphasis on heat treatment and alloying elements.
The influence of C, Si, Mo and P on metallographic and mechanical properties was investigated using 11 heats of which chemical composition is given in Table 1.
A typical heat treatment to obtain the desired properties is austenitizing at 1223K for 28.8ks, followed by air cooling to ambient temperature and tempering for 36ks at 893K.

The optimum degree of process parameters towards aperture quality was obtained. 0BIntroduction Glass Fiber Reinforced Plastic (GFRP) composites are most widely utilized in aerospace, construction of military conveyances and machine implements owing to their multi potential properties [1, 2].
König et al. [5] verbalized that cutting forces such as thrust force and torque, which depend on cutting parameters affects the surface quality.
Wen-Chou Chen [6] related the delamination factor with the average thrust force for the drilling of uni-directional and multidirectional composites.
Table 1: Mechanical properties of GFRP composites Mechanical properties ASTM standards Units Value Pultruded bar SMC bar Tensile strength D638 MPa 562 410 Tensile modulus D638 MPa 3875 3215 Tensile elongation D638 - 15.50 % 17.30 % Compressive strength D695 MPa 475 314 Compressive modulus D695 MPa 13194 10130 Flexural strength D790 MPa 82 58 Shear strength D2344 MPa 235 204 The mechanical properties of the workpieces have been ascertained by various tests and are presented in Table 1.
Diterlizzi, Effect of drilling parameters on the finish and mechanical properties of GFRP composites, Int.

The kinematic and dynamic properties of the sixbar linkage mechanism are optimised regarding boundary conditions coming from the production process and kinematic requirements.
Toggle lever presses are driven by sixbar linkage mechanisms which offer a variety of parameters to affect their drive side behaviour [4].
Here, the main properties are stated only: The used objective function is minimal rotation speed.
It is based on the virtual prototype (Fig. 3) but scaled down by the factor two.
To calibrate the damping factor – the last unknown – the measurement of the reaction forces without mass balancing system is used.

It is known, that the properties of the surface layers affect UHSS bendability [2,6], and therefore it is important to understand how shot blasting affects UHSS bendability in three-point bending.
Mechanical Testing.
However, the shot blasting significantly affects the subsurface (0 – 200 mm area) mean hardness, where individual values are 319 – 358 HV with hardness increasing towards the surface.
Therefore, it can be concluded that shot blasting decreased the bendability of UHSS due to two factors: an increase in the surface roughness, which provides more intense initiation points for strain localization and work-hardening of the surface layer leading to decreased forming capacity.

The Effects of MQL Pulse Parameters on Cutting Force, Cutting Temperature and Surface Roughness in Turning Process Ali Ozan Demir1,a, Yusuf Furkan Yapan1,b, Alper Uysal1,c 1Yildiz Technical University, Department of Mechanical Engineering, Besiktas, 34349, Istanbul, Türkiye aozan.demir1@std.yildiz.edu.tr, byapan@yildiz.edu.tr, cauysal@yildiz.edu.tr Keywords: MQL pulse; lubrication interval; duration of lubrication; cutting force; cutting temperature; surface roughness Abstract.
High local heating at the cutting interface can affect cutting tool wear [2], workpiece dimensions [3], and surface/subsurface properties of the workpiece material [4].
However, it negatively affects environmental integrity, human health, and the economy [5], although the flood cooling strategy increases the efficiency of the chip removal process.
The statistical technique known as ANOVA is frequently employed to examine how input factors affect technology performance metrics such as cutting forces, surface roughness, and cutting temperatures.

Experimental Investigation on Forming of Tailor Welded Blanks BÉRES Gábor1*, DANYI József1 1College of Kecskemét, Faculty of Mechanical Engineering and Automation 10.
In this way some researches are focused on the properties of the weld line [5,6].
One of the most influencing factor of the Swift tests is the blank holder force.
DP steels are also favored by the automotive industry, because of those special mechanical properties.
[3] Zoltán Weltsch, József Hlinka, Eszter Kókai: Wetting Properties of Silver Based Alloys, WORLD ACADEMY OF SCIENCE ENGINEERING AND TECHNOLOGY 9:(3) pp. 402-405. (2015)