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Therefore, in order to enhance the pertinence of tubing string wear reduction design in 3H gas wells, the influences of contact load, friction frequency, and reciprocating stroke on the wear characteristic of tubing was investigated by reciprocating wear experiment and find out the optimal combination of factors and determine the significant sequence of factors affecting the wear characteristic of tubing string. 2.
The chemical composition and mechanical properties of 13Cr-L80 are presented in Table 1.
Chemical composition and mechanical properties of test materials Material Chemical composition（wt%） 13Cr-L80 C Si Mn P S Cr Mo Ni Ti Als 0.22 0.48 0.53 0.02 0.01 12.8 2.16 0.04 0.05 0.02 Comple-tion fluid Water, 0.2%(NaOH), 0.3%(PF-OSY), 3%(JLB Corrosion inhibitor) and K4P2O7 (Aggravating to make the density as1.4g/cm3) 3.
Advances in Mechanical Engineering. 8(7), 1-15
Friction and wear properties of CT80 tubing under low friction velocity.

As the stone decay is in clear relation to its hygrothermal and mechanical behavior, there is necessary to characterize thermal, hygric and mechanical properties of the stone materials that are typical for specific region, where they were used in the past.
Basic physical properties of tested sandstones.
Mechanical properties are summarized in Table 5.
The effect of the porosity (Table 2) on the mechanical properties of the analyzed sandstones was apparent but the mineralogical composition played an important role as well.
Mechanical properties of tested sandstones.

It was observed that the mechanical properties of the crosslinked WBPU/HMMM-CNT nanocomposites were the least affected by water compared to conventional WBPU, crosslinked WBPU/HMMM, and WBPU/CNT nanocomposites.
The mechanical properties are summarized in Table 3.
However, the rate at which these mechanical properties decreased were not the same.
We also checked the mechanical properties of the samples after they were dried (see Table 3).
Combination of these factors made the crosslinked WBPU/HMMMCNT nanocomposite less water sensitive, and the mechanical properties were very slightly affected after dipped in water and recovered the values after drying.

Engineering Quality Support of the Surface Layer and Operational Properties of Machine Parts during the Process of Electroerosion S.Yu.
Introduction The quality and reliability of products and, as a result, their service life is determined by their operational properties.
Technological support of the operational properties of the products will reduce the cost of their manufacture and repair, as well as provide a target life.
This leads to the removal of the material of the workpiece, due to which the geometric parameters of the quality of the surface layer are formed, as well as to the heating and cooling of thin surface layers at high speeds, which leads to a change in the physical and mechanical properties of the processed of the workpiece.
These factors will have a different effect when using various schemes of shaping parts.

Environmental issues are among the most challenging problems affecting living conditions of urban population in nowadays’ Russia, and, therefore, are the most crucial questions needed solution under current industrial conditions.
The influence the composition of the raw material on basic properties of masonry paints under different condition is studied.
Introduction Urban living standards are affected by various factors, viz. natural environment [1-8], health service [9], housing maintenance level [10-13], service culture [12, 13], energy supply [16, 17], transportation and city infrastructure [18-21], etc.
[14] Chou J.S. and Wu J.H., Success factors of enhanced disaster resilience in urban community, Natural Hazards. 2(74) (2014) 661-686
Wilson et al., Factors affecting the water retaining characteristics of lime and cement mortars in the freshly-mixed state, Materials and Structures. 2(44) (2011) 509-516

Study of the Influence of Refractories Structure on the Thermomechanical Properties of Tunnel Kiln Equipment Lining Tatiana Lonzingera*, Vadim Skotnikovb and Alexey Sukharevc South Ural State University (NRU), 76, Lenin Avenue, Chelyabinsk, 454080, Russia alonzingertm@susu.ru, bskotnikovva@susu.ru, csukharevam@susu.ru Keywords: Structure, refractory lining, thermomechanical properties, electrocorundum, fireclay, increased performance.
A study of the influence of refractories’ structure on the thermomechanical properties of the lining of the equipment of tunnel kilns has been carried out.
The research methodology included the determination of the thermomechanical properties of refractory products under laboratory conditions and industrial tests.
Thermomechanical and chemical properties of fireclay allow it to be used as a filler for unshaped refractories at working temperatures in tunnel kilns.
[5] Valentina Hesse, Factors affecting the service life of refractory materials in the production of building bricks and clinker, Construction Materials. 7 (2011) 34-35

Many of these films have been found to display unique mechanical, physical and electronic properties and thus possess great potential for application in tribology, as well as protective and decorative coatings.
Accordingly, traditional model methods with characteristic mechanical properties have more difficulty in achieving good results.
However, an ANFIS model for mechanical properties of DLC multilayer films is developed, where the hybrid learning approach is used to optimize the parameters of the adaptive network.
An analysis of variance (ANOVA) was progressed with S/N ratios to detect the effects of factors and was used to examine the influenced factors for quality of films efficiently.
The important factors are identified according to analysis of variance.

Influence of the hot-pressing temperature, hot-pressing time, board density and the amount of isocyanate adhesive on straw particle board mechanical properties were studied.
Experimental Results and Analysis Mechanical Properties Test Results (Table 3) Tab. 3 Mechanical Properties of Straw Particle Board No.
(fig.1-4) Fig.1 Influence of factors and levels on MOR Fig.2 Influence of factors and levels on MOE Fig.3 Influence of factors and levels on TS Fig.4 Influence of factors and levels on IB Conclusion and Analysis Influence of MDI Applied Amount on Board Mechanical Properties.the increase of the MOR, MOE and IB along with the increase of MDI applied amount, but TSR opposite.
The best mechanical properties of straw particle board is the MDI applied amount of 3％.
Properties of Medium Density Fiberboard of Rice-straw with UF Resin [J].China Forest Products Industry,2002 (03)

Test the mechanical properties.
Figure 2 and figure 3 show the change of mechanic properties with the deformation degree and diameter ratio.
Table 2 Data of rolling parameters and mechanical properties Diameter ratio i Sample NO.
Compare to deformation degree, the difference of diameter ratio can be neglected, if the deformation degree is quite high. 4) With the increase of deformation degree, the value of (σb-σs) becomes smaller, but the reduction is not so much, the hadfield steel still have good ductility after asynchronous rolling. 5) Compare the role of deformation degree with that of diameter ratio, the main factors affecting performance is deformation degree, the effect of diameter ratio is very little relatively.
(1) The deformation degree plays an important role on mechanical performances of hadfield steel.

Investigation of the Effect of Argon Arc Welding Parameters on Properties of Thin Plate of In-situ Titanium Matrix Composites Jianwei Maoa, Yuanfei Hanb, Weijie Luc* and Liqiang Wangd State Key Laboratory of Metal Matrix Composites, Shanghai Jiao Tong University, Shanghai 200240, China amjwjake@126.com, b hyuf1@sjtu.edu.cn, c luweijie@sjtu.edu.cn, d wang_liqiang@sjtu.edu.cn Keywords: Titanium matrix composites, Argon arc welding, Whisker reinforced, Mechanical properties.
Due to the nature feature of arc welding, welding speed, visibly affecting the weld heat input, controls the appearance of weld [10].
Mechanical properties.
Lu, Microstructure effect on mechanical properties of in situ synthesized titanium matrix composites reinforced with TiB and La2O3.
Chen, Evolution of microstructure and tensile properties of in situ titanium matrix composites with volume fraction of (TiB+TiC) reinforcements.