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Characteristics such as low density and abrasiveness, superior mechanical properties and low cost are the most sought in these composites.
Characteristics such as low density and abrasiveness, superior mechanical properties and low cost are the most sought ones in these composites [1].
The humidity contents of the fibers can cause variations in properties of composites, especially mechanical properties, leading to degradation and failure.
Other factors associated with the chemical treatment are the exposure time of the fibers at alkaline conditions, the concentration of the solution and the temperature.
Mechanical properties of composites: (a) Young’s modulus e (b) tensile strength.

Investigating the influence of the power supply type upon the properties of the weld joints under manual arc welding D.P.
Welding diagram The received weld joints were examined for the chemical composition of the weld metal, microstructure and mechanical properties of the joints.
The weld joints completed with the use of different power supplies for arc welding are also supposed to possess different mechanical properties.
The mechanical properties of the weld joints completed with the use of different power supplies are given in tables 5, 6, 7.
Welding fumes as the main factor affecting welder’s labour safety, Welding production. 5 (2009), 51-55

Highlighting the significance of correlating the laying pattern to their mechanical properties, determining the properties of fabricated components may play a crucial role [6,7].
Comprehending to the facts that improper FDM processing parameters setting, inappropriate filament material selection, bad part design and topology, could negatively affect the final mechanical properties or the aesthetic appearance of the 3D printed part, therefore, it is of utmost importance to effectively control all the influential factors to improve the quality characteristics of the final 3D printed part, which in this case is hollow and thin-walled structures.
Table 1 lists the general properties of pure PLA granules.
The selected factors and their levels are shown in Table 2.
From Table 4, the topology design appears to be the most decisive factors in enhancing the compression properties of the 3D printed hollow and thin-walled structures with the percentage of contribution of 29.998% followed by wall thickness, layer of thickness and density.

And the material properties can affect the performance of seal ring directly.
The experimental results indicate that the amount of reclaimed rubber added into the seal ring has significant effect on the physical and mechanical properties of the blend.
Therefore, available from Table 3, the blend ratio is the main factor affecting the tensile properties, followed by silica, DCP and curing temperature, and excellent combination is A3B4C2D3.
Summary Through the experimental research on seal ring in the pipeline mixed with r-EPDM, and the factors which affect the mixing and vulcanization process and the mechanical properties of the blends, the conclusions can be concluded as followed: (1) Using ZnO / DCP curing system, while adding a small amount of sulfur to auxiliary vulcanize will get a better property
(3) Blend ratio of EPDM /r-EPDM is the main factor affecting the comprehensive properties

Also, for a comprehensive assessment of the factors affecting the risks in the operation of built-up cutting tools, experts from third-party organizations can be involved.
For the team to work effectively to analyze the risks and opportunities in the operation of built-up cutting tools, it is necessary to analyze factors affecting the performance of built-up tools.
Analysis of Factors Affecting Performance of Built-Up Tools One of the major challenges for metal cutting tool manufacturers is maintaining or improving tool performance while continuously improving productivity.
The analysis of factors affecting performance of built-in tools was carried out.
Zyryanov, Analysis of possible application of temperature dependences of processed materials' physical and mechanical properties to define the maximum workability temperature, Key Engineering Materials, 737 KEM, 2017, pp 114-118 [11] E.V.

The analysis shows that in the final analysis the reduction of the mechanical properties of mudstone is due to structural damage, stress weakening and energy weakening.
This properties are different from the common clay.
Uder water-rock interaction the mechanical properties will change a lot.
The wedge split and lubrication have a great influence on the mechanical properties[5].
The measures of improving the strength are discussed based on the above influence factors.

The main factors affecting on extrusion force are determined theoretically.
Therefore, choosing excellent material, improving the mechanical properties of cutting pick and surface quality, finding out the low cost and good quality manufacturing process is the problem to be solved in the production of cutting pick[1-4].
The main factors affecting on extrusion force are determined theoretically.
The Main Influence Factors of Warm Extrusion Force.
In addition, the geometry size of workpiece also directly affect extrusion force, thus, deformation resistance of metal, friction condition and geometry size of workpiece are main factors that affect extrusion force.

As the Bamforth[5] puts that, there are many factors affecting concrete performance, which can be divided into material factors and environment factors.
Al-Amoudi[25] and Bader[26] both chose the Arabian Gulf to study the mechanical properties of marine concrete.
Table 2 The gray correlation coefficient of factors influencing the marine concrete mechanical properties.
Meanwhile, the chloride ions concentration has an effect on the concrete mechanical properties.
Besides, it has made the utilization of GRA Theory on the factors analysis on the concrete mechanical properties.

Non-Autoclaved Aerated Concrete Porosity and Factors Affecting it L.A.
Interpore partitions contain gel and capillary pores, which have a significant impact on the total porosity, thus affecting the operating properties of aerated concrete.
The structure of pores is the single most important factor of strength and operating properties.
Quéneudec, Effect of microstructure on the mechanical and thermal properties of lightweight concrete prepared from clay, cement, and wood aggregates, Cement and Concrete Research. 28 (8) (1998) 1179-1190
Brusser, Structure and properties of cement concrete, Moscow, 1979

Cooling Curve Based Estimation of Mechanical Properties in High Strength Steel Welds Rahul Sharma1*and Uwe Reisgen1 1RWTH Aachen University, Welding and Joining Insitute, Pontstr. 49, 52062 Aachen, Germany Keywords: welding, cooling curve, HSLA Steel, mechanical properties Abstract.
Welding of HSLA steels The selection of welding parameters for fully mechanized arc welding processes is determined by technological factors.
The Influence of the main alloying elements on the mechanical properties has been studied in [3] together with the cooling rate influence [3] Evaluation of mechanical properties For the relationship between welding parameters and mechanical properties, the cooling time is considered as a major criterion, as it strongly affects the resulting microstructure and thus, the mechanical properties [5].
It can be clearly seen that there is no general significance of the cooling time regarding the mechanical properties.
Kao, The effect of alloying elements on the structure and mechanical properties of ultra low carbon bainitic steels, J.