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Appropriate winding tension makes the winding bobbin form, which is a compact structure without damaging the physical and mechanical properties, is conductive to smoothly unwinding after the back working procedure.This paper makes analysis of The principle, composition and factors affecting the yarn tension of a winding machine, so as to control the yarn tension constancy of the yarn theoretical basis.
So it is significant to analysis factors of affecting the yarn tension of a winding machine, so as to control the yarn tension constancy of the yarn theoretical basis.
Analysis of the factors affecting the yarn tension When the cop axial unwinds, yarn tension winding the bobbin mainly consists of the unwinding tension, friction tension and additional tension.
In the above three tensions, there are many factors affecting the unwinding tension, which is a major factor causing the yarn tension fluctuation.
Due to the yarn material excellent tension relaxation properties, tension fluctuation in this form can easily be eliminated in the bobbin so as not to adversely affect the subsequent steps.

Quality Control and Optimization of Concrete Pump Truck Painting Line based on Properties of Mechanical Materials Yanhua MA1,a, Keli ZHAO2,b, Xinyu ZHU3,c, Yuanchao Pan, Jian SHEN, Deguan REN 1,2,3Institute of Mechanical Science and Engineering, Jilin University, Changchun 130022 a,b,cEmail: zhaokl@jlu.edu.cn Keywords: factors affecting the quality, AHP, quality control and optimization, lean six sigma Abstract.
Use AHP analyze the factors affecting the quality of the Concrete Pump Truck Painting Line 2.1.
Build up AHP model for factors affecting the quality The AHP model is shown in Fig.1.
Fig. 1 AHP model for factors affecting the quality 2.2.
Table 3 The total sort of all tiers From the total sort of all tiers, we know the factors of the first tier are followed by human factors(0.4515), method factors(0.2246),material factors(0.1319),machine factors(0.0815), environment factors(0.0078), measure factors(0.0328); The total orders of the second tier are quality awareness (0.2335), the degree of implementation of the operating instructions(0.1431),the quality of individual skills(0.1102),the poor quality of other association(0.0989). 3.

Microstructural Factors Governing Mechanical Properties in Friction Stir Welds Yutaka S.
In the present paper, microstructural factors governing mechanical properties, especially hardness profile and tensile properties, of friction stir welded Al and Mg alloys are reviewed.
Since mechanical properties strongly depend on microstructure in the metallic materials, precise understanding of microstructural factors governing weld properties is required to maintain high reliability of the structure produced by FSW, but such knowledge has not been completely summarized.
In the present paper, microstructural factors governing mechanical properties, especially hardness profile and tensile properties, of friction stir (FS) welded Al and Mg alloys were reviewed.
Summary Microstructural factors governing mechanical properties in the FS-welded Al and Mg alloys were summarized.

To study the mechanical properties of RPC performance and freeze-thaw resistance，through the experimental study discussed the water-cement ratio, silica fume cement ratio, steel fiber content, curing system and other factors on the mechanical properties of reactive powder concrete and anti-freezing properties.
After the freeze-thaw damage of concrete, its mechanical properties change significantly and seriously affecting the long-term use of concrete buildings and safe operation.
Therefore, the author on the basis of mechanical properties of RPC, did anti-freeze experimental research to identify the anti-freezing properties of RPC important factors, and analyze the mechanism of structural durability for the RPC design and analysis of the experimental basis, to promote the development of RPC production technology and application engineering.
(6)Mixing of water: ordinary water Experimental Design Experimental Design of Mechanical Properties.
Many factors are affect the mechanical properties of reactive powder concrete, this study mainly analyzes the water-cement ratio, steel fiber content, and curing system on RPC strength

Pit shapes and lengths may also be affected steel mechanical properties.
The corrosion of steel is steel structure one of the main factors of performance degradation.
Literature [6] pointed out that the pit impact on the steel mechanics performance degradation is seriously, pit shape, location, rebar diameter and pit number, affects its mechanical properties.
The thickness of the steel relation with pit depth Steel thickness and pit depth ratio is one of the factors effected the properties of steel mechanical properties degradation .
Conclusions Some conclusions were achieved by using the finite element method to study steel pits affecting its mechanical performance: 1) Pit depth is main factors affecting its mechanical performance.

Improvement of Mechanical Properties of the Tool Using Nanocomposite Coatings Eldar M.
The research also estimates factors affecting the unique properties of these surface coatings.
Another way to improve mechanical properties is to apply metal diffusion coatings to the material.
In addition to improving mechanical properties, it is possible to communicate new properties to the surface of the material, such as corrosion resistance.
The combined effect of several factors has a favorable effect on hardness growth, which, according to the authors, makes it difficult to select the optimum set of deposition factors that could lead to the maximum hardness value.

The results showed that the bending rigidity and extensibility were closely correlated with the seam shrinkage rate, while the formability and rigidity were not the main factor of affecting the seam shrinkage of the light-weight silk fabric.
Implications and contents of the mechanical properties were described in table 1.
Thus we may conclude that since the variation of formability among lightweight silk fabric is very small, the formability is not the main factor of affecting the seam shrinkage of the light-weight silk fabric.
Conclusions The formability and rigidity are not the main factor of affecting the seam shrinkage of the light-weight silk fabric.
Petrauskas, The Effect of Fabric Structure and Mechanical Properties on Seam Pucker.

The longitudinal compression strength of single-directional fiber-reinforced composite is related to many factors, such as the mechanical properties, the fractions of components, and the distribution of flaws.
The damage mechanisms based by these models and the affecting factors considered in them are analyzed.
Introduction Because of its good tensile mechanical properties, the single-directional fiber-reinforced composite material has been widely applied in various tensile occasions.
Taking the various affecting factors that affect the damage mechanism into consideration, a unified description can be made by summing up the aforementioned models, which covers on the mechanism, strength calculation theory, phenomenon, and application condition of the compression damage of the fiber resin composite.
Through fiber mixing, fiber-reinforced composite materials can be produced which meet the requirements of the mechanical properties and low cost.

The temperature induction factors are proposed for the design and analysis.
Compared with traditional building material, the mechanical properties of coated fabrics are easily affected by environment.
Since the mechanical properties of coated fabrics are not clear, the method of safe factor is still popular in design.
In the molding, the curing will affect the mechanical properties.
The temperature reduction factors are proposed for design

Thermo-shock resistance of the thermal protection materials is affected by its heat, mechanical properties, and various environmental factors.
Therefore, it is very essential to understand which factors take great roles in affecting thermo-shock resistance and how much they affect, when designing the thermal protection materials.
Introduction For the design of thermal protection material, it is instructional to identify the main factors affecting the thermo-shock resistance by means of thermo-shock experiments, theory analysis and numerical simulation, to establish the proper characteristic parameters of thermo-shock resistance.
Effect factors.
TABLE 2：：：：Material properties table No.