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Mechanical expanding process for large diameter line pipe, a detailed analysis of factors affecting the quality of the final products of the mechanical expansion and proposed optimization using orthogonal array optimization method, as an indicator of dimensional accuracy and shape accuracy of the products, combination of a variety of specifications of mechanical expanding products, the main process parameters to be optimized.
Thus, the line pipe from the material properties to the forming process as well as welding assembly is different from the ordinary steel.
Process Parameters Many factors affect the mechanical expansion of the final product quality in a variety of process parameters, when a certain number of mold valve case, the factors directly related to the forming process of expanding rate, die radius, mold edge fillet radius, the following These three parameters will discuss the impact of the final product.
Mold edge of the fillet radius on the impact of products Mold edge of the fillet radius mainly affects the initial contact position of the billet and the mold, fitting behavior of the billet and the mold surface, thereby affecting the quality of the products.
Mechanical Expansion Optimization Mechanical expansion of the final product quality is good or bad is the combined result of various factors.

Moreover, influence of factors on mechanical properties of the one-way BSS with the cooperation of the supporting structure is investigated.
The factors include grouting, support form, corrosion.
However, there has been little research on the mechanical properties of BSS during various construction stages.
So in this paper, taking the beam string structure in a practical project as the research object, firstly mechanical properties of a single BSS during the prestressing phase is studied, and then the mechanical properties of the one-way BSS under various load cases is explored with the cooperation of the supporting structure, finally such factors as grouting, support form, steel corrosion, affecting the mechanical properties of the one-way BSS with the cooperation of the supporting structure, are further analyzed.
Influencing factors Grouting.

We consider the main factors affecting the mechanical characteristics of polymer composites, and determine the main limitations of using centrifugal casting technology for polymer composites.
The type of used polymer material affects mechanical properties due to the different nature of adhesion to reinforcing component.
Thermoplastics are recyclable; thermoset plastics have higher mechanical properties, but are not recyclable.
ISO 178: 2010 - Plastics - Determination of flexural properties was used as a document to regulate process for the evaluation of mechanical properties.
In the future plans we will explore changes in the casting mode, as well as the influence of other factors to obtain the desired mechanical characteristics of the product.

There are many influence factors of the rock slope stability, and they can be divided into natural factor and disturbance factor[3][4].Natural factors include lithology , rock structure, slope Angle, slope high and the control factors are slope structural plane.
Water has a great influence on the mechanical properties of the rock, often affect the deformation of the rock, and accelerate the deformation and failure of rock.
It shows that the influence degree of water content to the mechanical properties change with the kind of rock.
Therefore, for the natural slope the degree of saturation is an important factor affecting their stability.
We get the fitting equation between water content and rock mechanical properties with four kind of rocks.

Research Progress of Adsorption Properties of Hydroxyapatite Hailin Fan1,a, Zhaoxia Hou*1,b, Shaohong Wang1,Meihan Wang1 Xiaodan, Hu1 1 Liaoning Province Key Laboratory of New Functional Materials and Chemical Technology, School of Mechanical Engineering, Shenyang University, Shenyang, China awuweifanhailin@126.com, *bluckyxia2007@126.com Key words: Hydroxyapatite; Adsorption properties; Influencing factors; Kinetics Abstract: Nowadays, serious environmental pollution demands enterprises to dispose waste water, especially for the printing, dyeing and nonferrous metal ones.
In this paper, the pollution situation, adsorption properties, adsorption mechanism, influencing factors and adsorption kinetic of hydroxyapatite are introduced.
Influence factors of adsorption Background.
This method can also be used to study the influence factors of adsorption properties of HA.
Temperature is also an important factor which affects the adsorption process.

In order to get more excellent mechanical properties, the forming process and mechanical properties of PC were concerned.
In this research, glass fiber and carbon fiber were applied to improve the mechanical properties of PC.
Vibration is an important factor affecting machining precision, which prevented high-speed and high-precision machining from developing rapidly.
Properties of the specimens were tested, how fibers affect properties of PC could be analyzed basing on the test results.
The relationships among the mechanical properties are shown in Eq. (1) and (2) [19]

Experimental Study on Mechanical Properties of RAP Fiber Cement Stabilized Macadam Xiaotian ZHANG 1,a, Zhanjiang LIU 2,b, Mingcheng YANG 2, c 1 Construction Department, Ningxia University , Yinchuan, Ningxia 750021, China , 2 College of Civil and Hydraulic Engineering , Ningxia University , Yinchuan, Ningxia 750021, China a zhxtangxiaoian@126.com, blzhj917868@163.com, cnxuymc@126.com Keywords: RAP; fiber; parameters sensitivity; unconfined compression strength; dry shrinkage Abstract: The basic mechanical properties of RAP used as semi-rigid cement stabilized macadam base were researched.
Table 1 Chemical Composition of Fly Ash of Shuidonggou Power Plant SiO2 Al2O3 Fe2O3 CaO MgO K2O Na2O SO3 48.99 20.74 5.91 7.44 2.36 1.39 1.04 2.5 Table 2 Physico-mechanical Properties of Polypropylene Fiber Name Density (g/cm3) Equivalent Diameter (μm) Length (mm) Tensile Strength (MPa) ElasticModulus (MPa) Elongation at break (%) Polypropylene Fiber 0.91 10 12 400 3500 15 Experimental Scheme The mechanical properties of RAP fiber cement stabilized macadam is comprehensive performance that affected by many factors including cement, fiber, RAP, fly ash and so on, each factor has influenced the mechanical properties of RAP fiber cement stabilized macadam in different degree.
Through orthogonal test, we can easily find the main controlling factors and the influence rule from various factors.
In the research of the mechanical properties of RAP fiber cement stabilized macadam, cement, fiber, RAP and fly ash were the four main factors that was taken into account, and each factor was divided into four levels.
Unconfined Compressive Strength Analysis In order to study the influence rule of the unconfined compressive strength affected by its main influencing factors of cement and fly ash, based on the amount of fly ash as constant and cement content as variables, the change rule of unconfined compressive strength affected by the two major factors was studied, as shown in Table 4.

Introduction In order to minimize the rate of potato damage, the research of potato mechanical properties and damage mechanism become particularly important.
This article respectively to varieties of New Daping and Longshu 3 is doing the potato compression mechanical properties research.
Fig. 1 Compression direction of whole stem Test factors and indexes.
The factors and level table of potato compression test as shown in Table.1.
Yang: The Rheological Properties of Melon and Transportation Damage Control (Ph.D., Inner Mongolia Agricultural University, China 2006)

Investigation of Microstructure and Mechanical Properties of Al Alloys Lap Joints by Friction Stir Welding AJAY Trivedi1,a*, SHAILESHKUMAR N.
It is observed that tool diameter and tool rotational speed are most significant factors affecting tensile shear strength.
The mechanical properties of AA6082-O are given in Table 1 and chemical composition of AA6082-O is tabulated in Table 2.
Heat input is a major parameter affecting formation of intermetallic compound which affects the strength of the joint.
It is used as mathematical model for prediction of tensile shear strength in terms of control factors as well as noise factors.

"Applicable and durable configuration" can effectively solve these problems, "applicable and durable" include durability, mechanical properties, enforceability and economy.
Impact factors.
Material properties.
If mechanicals can not meet the needs, durability and other properties are out of the question.
The factors weights were also determined as follows: {Environment, Traffic loads, Material properties} = {0.44, 0.29, 0.27}.