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According to the factors which affected the properties of the composites, adopting the orthogonal table of L9 (34).
Table 1 Levels of Factors Levels Factors A B C D Length of the fibers(mm) Mass fraction of PLA(%) Molding temperature(℃) Molding pressure(MPa) 1 2 85 175 8 2 6 75 185 12 3 10 65 195 16 Mechanical properties of the cotton stalks bast fibers reinforced PLA Testing of tensile strength.
The data of mechanical properties were shown in Table 2.
Molding temperature was the most important factor which affected the mechanical properties.
If molding pressure was too light, PLA and fibers would not be well hold together and then it would affect the mechanical properties.

The research was study the effect of gas metal arc welding process parameters on mechanical property.
Factors affecting the tensile strength are the most carbon dioxide and 27 voltage were tensile strength 213.43 MPa.
The experimental design of full factorial design to be the main factors effectors affecting significantly.
Factors used in the shielding gas and voltage of the P-Value of factors was 0.000 (<0.005).
Factors affecting the tensile strength are the most carbon dioxide and 27 voltage were tensile strength 213.43 MPa.

After magnesium alloy bone fixation degrades some time, its overall strength will decline, but the remaining strength still needs to ensure bone healing, therefore, it is very important to study how the related factors affect the degradation of magnesium alloys.
Gu [5] studied fatigue corrosion properties of AZ91D and WE43 magnesium alloys in the cyclic loads.
Studies have shown that cyclic loading will accelerate the corrosion rate, and the corrosion rate increases as the load increases.Hazibullah Waizy[6] studied how the corrosion environment affected the mechanical properties of magnesium alloys.
The results showed that after a certain time of corrosion, the mechanical properties decrease significantly.
This study is a basic research on mechanical environment affecting the degradation of the magnesium alloys, which can lay a certain foundation for the further study of magnesium alloys.

External Factors Impact on Basic Properties of Hovercraft Skirt Materials A.K.
The paper presents the results of the impact various external factors have on hovercraft operational properties.
It is shown that the strength properties and adhesion are significantly changed during the operation of the ACV.
On the other hand, information on physical and mechanical properties of the materials along with modeling techniques of ACV dynamics will allow us to put forward specific requirements for the development of materials for prospective ACVs.
[3] Experimental and theoretical investigation of physical and mechanical properties of materials and standard units skirt amphibious hovercrafts baronetage type, Lobachevsky State University, N. 

The influence of heat input on the tensile strength properties and hardness of the base metal, heat affected and fusion zones were studied.
The results revealed that the mechanical properties of the welds strongly depend on welding conditions and process parameters.
In general, the 6xxx series aluminium alloys are prone to hot cracking, so the correct choice of joint and filler metal are the determinant factors.
The chemical composition and the mechanical properties of used material are given in Tables 1 and 2.
Mechanical, fatigue and microstructural properties of friction stir welded 5083-H111 and 6082-T651 aluminium alloys.

Experiment Research of Luming Molybdenum Mine Rock Physical and Mechanical Properties Zhang Ying-hua1, a, Zhao Bo-chuan1, b, Ye Zhou-jing1, c, Huang Zhi-an*1, d and Gong Ming-shan2, e 1State Key Laboratory of High-Efficient Mining and Safety of Metal Mines(University of Science and Technology Beijing), Ministry of Education, Beijing 100083, China 2Yichun Luming Mining Co.
Ltd., Tieli, Heilongjiang Province 152500, China azyhustb@163.com, blittlehwasin@vip.qq.com, cyezhoujing@126.com, dhuang_za@qq.com, e419328902@qq.com * Corresponding author: Huang Zhi-an Keywords: Luming molybdenum mine; slope stability; physical properties; mechanical properties Abstract.
Physical and mechanical properties of rocks are the fundamental factors affecting the slope stability, the rock physical and mechanical properties of the Luming molybdenum mine were tested and analyzed in the laboratory.
Because of the natural and man-made factors, the landslides, avalanches, mudslides form of slope deformation instability causes significant losses to people’s lives, property and engineering.
The research group drilled core in the field, then did the rock mechanics experiment in the laboratory to obtain various rock layers of rock mechanical properties parameters, and analyzed how the rock mechanical properties impact the slope stability.

The several key factors affecting the absorption process, such as preparing of nanofluid, absorption pressure, solution temperature and the flow rate of cooling water, were also analyzed, repectively, and finally it was pointed out that there exist certain possible coupling relations between these influencing factors.
Kang, etc. [1] researched the bubbling absorption properties in the NH3/H2O absorber, and found that the absorption rate of bubbling absorption was always higher than that of falling film absorption.
At present the complicated mechanism of the enhancing influence for nanofluid in ammonia bubbling absorption process still has been not clear, and the various factors affecting the absorption process might interact each other.
On the basis of the researches of the ammonia bubbling absorption process and impact of strengthening absorption process by nanofluid[11-12], several key factors affecting the absorption effect such as the preparation of nanofluid,absorption pressure, the solution temperature, cooling water flow rate, etc..were further researched and analyzed, and the possible coupling relations among the various factors were pointed out in this work.
In fact there are certain coupling relations among the various factors.

The Influence of Friction Stir Welding Parameters on Axial Force and Mechanical Properties of AA6061-T6 Using Taguchi Method Chonnikan Wongkasae1, a,*, Adirek Baisukhan2,b,* 1Faculty of Engineering, Chaing Mai University, Chiang Mai, Thailand 2Department of Industrial Engineering, Faculty of Engineering, Chiang Mai University, Thailand achonnikan_w@cmu.ac.th, badirek.b@cmu.ac.th Keywords: Axial force, friction stir welding, aluminnium alloy, Taguchi, mechanical properties.
In this research, a comprehensive investigation is carried out to axial force and mechanical properties of the AA6061-T6 butt joints fabricated using FSW, the study involves the influence of preheat temperature and using Taguchi analysis that the main factors affecting the parameters of the FSW which to be used in this research are rotation speed, welding speed, dwell time and preheat temperature.
Results In this study, two mechanical properties were measured: tensile strength and hardness.
Dumpala: Effects of friction stir welding on corrosion and mechanical properties of AA6063 in sea water, Proc.
Muhayat: Effect of tools rotational speed on the mechanical properties of one-step double-acting friction stir welded aluminum alloy AA6061 hollow pane, Int.

This study investigated the microstructure and mechanical properties of a wide-gap region brazed with various process variables.
It was observed that the brazing temperature was the main process variable affecting the mechanical properties of the wide-gap brazed region.
It was found that the (Cr, W)2B and the pore in the brazed region are important microstructural factors affecting the mechanical properties of the wide-gap brazed region.
Considering that increase of the fracture strength with brazing temperature and time, the brazing temperature is main factor affecting the mechanical properties of the brazed region.
It was believed that the (Cr, W)2B and pore in the brazed region were important microstructural factors affecting the mechanical properties of the wide-gap brazed region.

Analysis of Product Quality Through Mechanical Properties and Determining Optimal Process Parameters of Untreated and Heat-Treated AISI 1050 Alloy during Turning Operation S.P.
Analysis results also revealed that the Feed rate was found to be the most significant factors affecting the roundness of untreated samples, followed by Spindle Speed.
Depth of cut, Insert Corner Radius and Cutting Fluid concentration contribute equally for the Untreated specimens; and spindle speed was found to be the most significant factors affecting the roundness in case of annealed specimens.
Spindle Speed was found to be the most significant factors affecting the MRR, whereas, Feed, Depth of cut, Insert Corner Radius and Cutting Fluid concentration contribute in a decreasing order respectively for both the Untreated and Treated specimen.
Spindle Speed is found to be the most significant factors affecting the power consumption for both annealed and untreated samples, and Feed, Depth of cut, Insert Corner Radius and Cutting Fluid concentration contribute in a decreasing order respectively with Depth of cut and Insert Corner Radius having equal contribution for the Untreated specimen.