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Research shows that the applied load on material would affect the direction and formation of the magnetic domain which in term change the magnetic properties [10].In order to describe the phenomena, people have proposed a few stress-permeability models [11-12] based on experimental or physical.
The chemical composition and mechanical properties of the material are listed in Table1 and Table 2.
Table 1 Chemical composition and mechanical properties of HT300 low carbon steel C Cr Cu Mn Mo Ni Si Fe 3.25-3.5 0.05-0.45 0.15-0.4 0.5-0.9 0.05-0.1 0.05-0.2 1.8-2.3 Margin Table 2 Mechanical properties of HT300 Alloy HT300 276 1034 8% Measuring line Figure 1 Specimen dimensions (in mm) The tensile load was set to 0, 22, 35, 43, 56, 65and 86KN respectively.
As to the boundary condition, the exterior boundaries of the box are insulating for the reduced magnetic field: (7) Result and discussion Many factors affect the magnetic flux leakage signal of the specimens, including the material, stress concentration and measuring conditions [11-12].
A study of metal properties using the method of magnetic memory.

Calculation of the Jacking Force In the jacking process, the jacking force should overcome the friction, the front-end resistance of the first box girder, while influenced by various external factors, such as correction, the displacement of the reaction wall and so on.
Its top, bottom and two sides friction have marked differences. ③the geological conditions are relatively single, the box girders are usually jacked through backfill soil or rammed earth, but the mechanical properties of soil along the thickness have notable differences; The jacking distance is short, usually only a few meters or to a few tens of meters.
Those features are critical factors in the calculation of the jacking force.
Other factors affecting the jacking force Other factors obviously affecting the jacking force are as follow: ①the construction interval. ② the stiffness of the reaction frame the reaction system. ③error correction. ④other Factors, such as the soil behavior differences at the top and bottom of the box girders ,the ”funnel” effect induced by well point dewatering, altering the water content of the soil along the jacking direction top into the distance are a result of such factors as differences in the specific construction conditions of the jacking force have different degrees.
Then，the jacking force can be expressed as: (4) Where: k -safety factor, the selection of the safety factors is mainly take into account other factors that are not considered in this paper. as well as the simplifying assumptions, which may make the calculated value too small, suggested 1.2.

It depends on the TPU's crystalline and products of size and many other factors.
The existence of internal stress in products will drop the regular mechanical properties, surface crazing or even deformation and cracking during the storage and use.
Annealing not only could eliminate the internal stress, but also may enhance the mechanical properties.
The above factors, select project-level experimental thermoplastic polyurethane elastomer as the main material, ensure dimensions and performance meet the preparation requirements.
e) Heat treatment Research found that in 110～130℃ the thermodynamic properties of TPU has obviously changed.

Introduction The widespread red-bed soft rock in the west region of Yunnan province is characterized by bad engineering properties, which impose adverse impacts on the construction and operation of highways built in this region [1].
To make the matter worse, this region is frequently affected by earthquakes with large intensity.
The stability factors at different slope heights and ratios are calculated by using strength reduction [4], and the correlation between slope stability factors and heights is deduced.
As is shown in Figure 6(a), where only the gravity load is considered, the stability factors of the slopes at the same ratio but with different heights tend to exhibit non-linear change, while at different slope ratios; the polylines of the stability factors are nearly parallel to each other.
Fig. 5 A picture of the stability factors of a slope 9m in height and 1:0.75 in slope ratio (a) under gravity loading (b) under seismic loading Fig. 6 The tendency of the slope stability factors Calculation of Slope Critical Height.

The strength and strains of the wood-cement composite primarily depend on the main technоlogical factors such as the used type of binder and wood filler, the method of wood filler preparation, the method of molding, the conditions of hardening.
The strength and strains of the wood-cement composite primarily depend on the main technological factors such as the used type of binder and wood filler, the method of preparation of wood filler, the method of molding, the conditions of hardening [1,2,12,13-17].
It is known that high-valence cations can be adsorbed by wood fibers, improving wood’s adhesive properties.
Consequently, this property of treated wood can be used in its interaction with cement in a wood-cement composite and significantly affects its strength, especially in the early periods of hardening.
Acknowledgments This paper was supported by the Ministry of Education and Science of the Russian Federation (Project No. 37.8809.2017/BCH ”Study of the structure, properties and characteristics of wood as a natural functional material for the development of energy-saving and environmentally friendly technologies for products with specified mechanical, electrical, chemical and thermal characteristics“).

Research on Box Drawing Coefficient of Friction Based on Dynaform Luo Zhigao1, a, Li Xudong2,b, Zhang Jingjing3,c and Zhao Junli4,d 1 School of Mechanical Engineering, Jiangsu university, Zhenjiang, Jiangsu, China 2 School of Mechanical Engineering, Jiangsu university, Zhenjiang, Jiangsu, China 3 School of Mechanical Engineering, Jiangsu university, Zhenjiang, Jiangsu, China 4School of Mechanical Engineering, Jiangsu university, Zhenjiang, Jiangsu, China alzg3359@163.com, bq12356p@126.com, czhangjingde.2006@163.com dzhaojunli_2006@126.com Keywords: Box shaped parts, Friction coefficient, Forming limit, Thickness variation Abstract.
Introduction Metal deep drawing is a very complicated plastic forming process，there are many factors which affect molding quality directly or indirectly.
These factors consist of material, mold clearance, the round angle, sheet thickness, blank holder force, friction and lubrication to mention only but a few[1].
The sheet metal model with FLD anisotropic elastic-plastic material model is United States DQSK36 steel materials,1mm thick, its mechanical properties is: the yield strength 210 MPa, young's modulus 2. 07×105 MPa, poisson ratio 0. 28, anisotropic sclerosis parameter1. 71.
Mechanical and electrical engineering,2007,24( 3) : 61-63

The research object was to use analytical models to develop a quantitative understanding of the affections in different situations on the dispersion properties.
Among all the factors, the interface failure was dominant.
As we all know, ultrasonic method was an effective approach for detecting the disbond defects, Ultrasonic waves interacted with the interfaces in a complicated way on the propagation path, and the propagation properties could be changed by the interfaces.
Results and discussion In this paper, the steel/ adhesive layer/insulation structure was took as the object which was usually used in the rocket, the influence of all factors on the dispersion properties of adhesive bonding structures was computed which included interface failure, cohesive strength failure, mixed failure and other elements.
Thus the evolution regularity was strongly depended on the properties and plying manner, different materials and structures had different rules.

The following factors were considered: forming steps, forming velocity, grain size, and friction coefficient.
This anti-bacterial surface was comprised of millions of diamond shapes arranged in a distinct pattern that mimicked the microbe-resistant properties of shark skin.
Several important factors that influence the success of microimprinting are: type of forming process, geometric dimension of a surface pattern, material properties of die and sheet, forming steps, forming velocity, and die/sheet friction.
Considered factors in the microimprinting simulations.
Selected grain sizes did not affect the peak errors.

Introduction When developing protective coatings firstly it is necessary to take into account that most the polymeric materials produced on an industrial scale are not sufficiently resistant to atmospheric factors and mechanical impact.
Naturally, the change of physical and physico-mechanical properties occur in the composition.
In this respect, the research results have both fundamental and applied tendency and can be used for the development of new materials and coatings to protect buildings, facilities and objects of historical heritage from adverse factors.
Golovkin, Polymer composite: structure, properties, technology: schoolbook, Eds.
Volkov, Interpolyelectrolyte complexation as a tool for controlling yhe mechanical, sorption, and diffusion properties of film materials, Russian Journal of Applied Chemistry, Т. 88, № 3, 2015, 480-487

In artificial tooth application, pure zirconia with high strength is needed, thus controlling crystal and grain sizes is a crucial factor which affect the properties.
This material can be used for many applications due to its bioinertness, chemical resistance, high strength, low thermal conductivity, high mechanical properties [1-5].
The use of a nickel crucible and careful temperature control are critical factors in optimizing the alkali fusion process for zirconium compound production.
High-purity fine-grained zirconia offers remarkable mechanical properties that make it suitable for dental applications, especially for crowns and bridges.
This high purity and small crystal zirconia will give superior mechanical properties which are suitable for artificial dental applications.