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Influence of Built Orientation on Mechanical Properties in Fused Deposition Modeling Sandeep V.
In FDM, one of the critical factor is to select the built up orientation of the model since it affects the different areas of the model like main material, support material, built up time, total cost per part and most important the mechanical properties of the part.
In view of this, objective of the present study was to investigate the effect of the built-up orientation on the mechanical properties and total cost of the FDM parts.
In order to be used as a part for serial production, the components must possess the required mechanical properties.
In this they fabricated the model at different orientation varying from 0° to 90°, due to which the variation occurred in other factors like number of layers, built time, built material and support material which directly affects the manufacturing cost has been studied.

The mechanical properties of porous metals have been extensively investigated [7-11].
Compressive tests on various porous metals have demonstrated that the mechanical properties are also affected by the geometry of cells [12] and the microstructures of cell edges (walls) [13].
This enables the investigation of the mechanical properties and the affecting factors of porous materials in more detail.
For the metal foams with a macro-porous structure, the pore size shows no effect on the mechanical properties [14].
Ashby: Cellular Solids: Structure and Properties.

Influence of Pulsed Gas Feeding on Surface Defects and Mechanical Properties of Ti/TiN Multilayered Films deposited by Ion Beam Assisted Magnetron Sputtering FU Zhiqiang1, a, REN Yi1, WANG Chengbiao1, YUE Wen1, and LIN Songsheng2 1 School of Engineering and Technology, China University of Geosciences, Beijing 100083, China 2 Guangzhou Research Institute of Non-ferrous Metals, Guangzhou 510651, China a fuzq@cugb.edu.cn Keywords: Ti/TiN multilayered films; ion beam assisted magnetron spputtering; pulsed gas feeding; surface defect; mechanical properties.
It was found that the key factors affecting surface defects of monolayer TiN films are sputtering power and N2 flow rate while ion current is the most significant factor affecting the hardness of monolayer TiN films.
Table 4 Effect of various factors on LC of TiN films Factors SⅠ SⅡ SⅢ R Optimal A 2.83 9.07 8.33 6.24 7-9 kW B 9.63 5.43 5.17 4.46 20 sccm C 8.00 5.97 6.27 2.03 4 A D 8.27 6.00 5.97 2.30 150 ℃ Table 3 Effect of various factors on AD of TiN films Factors SⅠ SⅡ SⅢ R Optimal A 3.09 3.45 2.23 1.22 9 kW B 2.32 2.63 3.82 1.50 20 sccm C 2.77 2.81 3.19 0.42 4 A D 2.48 2.61 3.68 1.20 150 ℃ The effect of various factors on LC of TiN films is shown in Table 4.
Table 5 Effect of various factors on HV of TiN films Factors SⅠ SⅡ SⅢ R Optimal A 1783 2218 2272 489 9 kW B 1999 2026 2247 221 50 sccm C 2460 2109 1704 756 4 A D 2322 2117 1834 488 150 ℃ The effect of various factors on HV of TiN films is shown in Table 5.
Conclusions The key factors affecting the monolayer TiN films deposited by ion beam assisted magnetron sputtering are sputtering power and N2 flow rate while ion current is the most significant factor for the hardness of the monolayer TiN films.

Current research highly concerned about influence factors of the toughen effect and mechanical properties [1-4].
Thus the effective mechanical properties – Young’s Modulus E and Possion’s ratio are defined as Eq. (2).
Particle distribution status is also an important factor affect rubber-toughened polymers.
Chemical and mechanical properties of vinyl-ester /ABS blends, Polymer. 43 (2002) 4503-4514
Lee, Analytical modelling of mechanical properties for rubber-toughened polymers, J.

A Study of the Effects of Processing Conditions on Mechanical Properties of Polypropylene/Multiwall Carbon Nanotube Nanocomposites Using Design of Experiments N.
This research work studies the effects of processing conditions on mechanical properties of polymer nanocomposites.
Therefore, the mechanical properties were improved significantly with the content of MWCNTs.
In addition, morphology also shows the result of the dispersion of MWCNTs in the nanocomposite that affects the mechanical properties.
According to Table 2, there is strong evidence that factors (a), (b), (c) and (d) affect the mechanical properties of the nanocomposite (p-value < 0.01, significance level = 0.05).

By changing the section size of a frame beam and column, the mechanical properties of multi-frames under vertical and horizontal loads were studied.
Through research on a frame unit under vertical and horizontal loads，the mechanical properties of a frame unit were obtained.
Analysis of test results Conclusions can be drawn from the failure pattern of the specimen and test results, that there are many factors affecting on the mechanical properties of composite wall.
Then, the following main factors will be focused on, namely filled block and its mechanical properties, the section stiffness of frame beam and column.
In summary, the major factor considered in this experiment has a significant impact on mechanical properties of the composite wall unit, and the impact on the bearing capacity is more outstanding than the stiffness.

The mechanical properties of lost foam pattern and its mechanical property model were studied, which provided theoretical support for the research of numerical control processing and safe casting of lost foam pattern.
In lost foam casting, under normal circumstances, there are many factors affecting the dimensional accuracy of casting, such as the structure, shape and size of the lost foam casting, the influence of the quality of the foam plastic, the influence of the coating, the influence of the casting process, the casting process and so on.
Menges and Knipschild studied the mechanical properties of rigid polyurethane foam.
There are still some works about the influence of cell structure on the mechanical properties of foam plastics.
Compared with low density foam plastics, the mechanical properties of high density foam plastics are seldom studied.

The use of coupled experimental researches (including NDT – non-destructive testing and local mechanical properties of castings) and simulation tests (Procast, ANSYS) have shown how the properties gradient influences on the safety factor distribution in the casting subjected by chosen load.
These discontinuities are related with local cooling rate and temperature gradient and affect the mechanical properties variation of the casting wall section (casting thickness) [1,2].
It is usually applied in stress calculation to take into account homogenous mechanical properties in all the casting volume without real zones with local mechanical properties.
Fig. 1 Algorithm of experimental-simulation tests coupling the structure and properties gradient with stresses distribution and local safety factors.
As the simulation tests show (ANSYS), the way of discontinuities assumption in the material of the casting significantly affects the calculated real safety factors.

Another issue of concern in galvanizing high strength steels is the zinc bath temperature, which might affect the mechanical properties of high strength steels.
Nevertheless, these mechanical properties are recovered after galvanizing [3].
This is why the tensile test specimens were pickled for two hours in 10 % HCl acid containing inhibitor to investigate if pickling process can affect the mechanical properties of the steel.
Gutierrez-Solana, Environmental factors in failure during structural steel hot-dip galvanizing, Eng.
Langill, Mechanical Properties of Hot-Dip Galvanized Steel, Structures Congress 2009. 1-6

A Preliminary Analysis of Main Factors Affecting Stress-strain Behaviors of Frozen Soil with High Water Content Shujuan Zhang1,a, Zhizhong Sun1,b and Haimin Du1,c 1 State Key Laboratory of Frozen Soil Engineering, Cold and Arid Regions Environmental and Engineering Research Institute, Chinese Academy of Sciences, Lanzhou, 730000, China asjzhang@lzb.ac.cn, bsun@lzb.ac.cn, c812205958@qq.com Keywords: Frozen Soil, High Temperature, High Water Content, Stress-strain Behavior, Main Factors.
Introduction The strength of soil is one of the most important mechanical properties of soil.
The frozen soil with high temperature and high ice content is rather sensitive to the outside role, so the mechanical properties are more likely to be affected.
So at present study, we will put forward the preparation method of sample with high water content, and analyze the main factors affecting the stress-strain behavior of frozen soil with high water content.
On the basis of the results from plenty of testing data, main factors effecting on the stress-strain curve of high water content can be reduced to the following: Soil type and strain rate For the silty sandy soil, the stress-strain curve is hardening in regardless of the shearing rate and water content at -1.0°C, as is shown in Fig. 4(a).