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Dynamic mechanical properties of silica fume concrete in a number of strain rate under the conditions of dynamic compression mechanical properties subjected to various strain rates were studied, and gained the stress versus strain curves, details of an experimental investigation using 74 mm-diameter split Hopkinson pressure bar(SHPB) apparatus were presented.
Introduction Silica fume is the fume reclaimed from smoke and gas produced by silica and ferrosilicon smelting, a large number experimental research and practice indicate that: admixing some silica fume to concrete cannot only meliorate the physical dynamic mechanical properties effectively, but also meet some special construction demand. silica fume has been an important admixture Of concrete in the field such as hydro project, marine port project, transportation project, military project, civil engineering and so forth[1-5].Right understanding of material characteristic in different strain rate and dynamic mechanical properties of silica fume concrete may be great significant to the its construction and extending its applied range in civil engineering.
Via orthogonal experiment, the article is considering four factors, namely water to binder ratio(J),silica fume(G), fly ash content(F) and sand ratio(S).
Rising from the last factor at low strain rate to the second factor at high strain rate in the four factors, it can be seen that the silica fume additive have an important effect on concrete impact performance, especially the performance of the high-velocity impact.
Table 2 Range result of each factor affected dynamic compression strength under different pressure impact 0.2Mpa 0.4MPa 0.6Mpa Horizon J G F S J G F S J G F S 1 56.8 60.3 66.5 58 126.1 123.5 138.5 126.7 178.3 166.9 187.3 174.5 2 62.3 58.2 54.8 59.8 133.8 128.3 120.8 127 174.3 175.1 164 171.1 3 60.3 60.83 58 61.5 119.5 127.6 120.1 125.7 168.1 178.7 169.4 175.1 Range 5.5 2.63 11.7 3.5 14.3 4.86 18.34 1.03 10.2 11.8 23.3 4 Chart 4 Effect of factors on dynamic compression strength The 4th chart is the effect of each factor on dynamic compression strength graphics.

EVA has the amorphous structure, which generally reduces the mechanical properties of LDPE after blending with the LDPE resin but, in this paper, by the method of melt blending, six kinds of LDPE/EVA films with different content of EVA were prepared, and the mechanical and barrier properties were studied.
Fig.2 influence of EVA amount on Fig. 3 influence of EVA amount on the LDPE film of Young's modulus the tensile strength of LDPE films When the EVA content increased further, EVA modified LDPE film Young's modulus and tensile strength decreased, that’s because when the EVA content is greater than 5%, EVA makes hindered the migration of LDPE, slow crystallization rate, to lower the crystallinity of LDPE, the mechanical properties caused by decreased synthesis of the factors is greater than the role of VA in the heterogeneous nucleation, and therefore high EVA content, the mechanical properties of modified films is reduced.
Apparently, EVA content of 5% of the modified film was the best mechanical properties.
In order to verify the causes of changes in mechanical properties of modified films, the six blend membrane samples were tested through DSC thermodynamics properties of analysis, the results as shown in fig. 6 and 7.
But to combine these factors, the oxygen barrier of the film on the decline was caused by EVA content increase, that is, with the EVA content increasing, the blend film OTR was increased.

Fig.1 Microstructure of deep-oceam pipeline steel (a, thickness of 1/4; b, Center) Manufacture the mechanical properties of steel plates, as shown in table 3, meet the requirements of DNV-OS-F101 standard on mechanical property of steel plate.
And steel strength, microstructure and chemical composition and shape variables relate to many factors, such as, under different conditions change there is a difference between mechanical property of steel plate and steel pipe.
By analyzing the effect of JCOE process on mechanical properties of wall thickness of steel pipe, as well as changes of mechanical properties of steel plate and steel pipe, plate can be reasonable set of performance indicators for guidance.
This paper statistics produced by the mechanical properties of JCOE φ762×30.2mm X65, φ 762×28.6mm X65 pipeline with large wall thickness of steel plate and pipe .
Therefore, all the influence factors need to be taken into account. 4.

Quantitative acoustic emission techniques were used to measure micro fracture properties.
Factors Affecting Modulus of Elasticity of Concrete.
The void spaces and the micro-cracks in the transition play a major role in affecting the stress-strain behaviour of concrete.
The number of micro cracks in concrete affects resulting mechanical properties of concrete.
Weiss, Chapter 19 - Elastic Properties, Creep, and Relaxation, ASTM 169D, Significance of Tests and Properties of Concrete and Concrete Making Materials, ASTM International, West Conshohocken, PA, 2006, pp. 194-206

Electrochemical hydrogen charging affected the native passive layer.
Introduction The influence of hydrogen on the microstructure and mechanical properties [1] of duplex stainless steels (DSS) constructions is still being discussed.
It is still uncertain which factors are crucial in the development of hydrogen degradation.
Interactions of hydrogen in passive films may enhance the susceptibility to environmental degradation of stainless steels, because hydrogen entering into steel affects its electrochemical properties.
Charles, Super duplex stainless steels: Structure and properties, Duplex Stainless Steels '91, Les Editions de Physique, Beaune, France 1991, 211-215

These utilizations could incorporate beneficial properties of the materials.
Fusion welding is difficult to join dissimilar materials due to the different properties which could be sensitive to the metallurgical change [1].
Influence of forging pressure on the mechanical properties of rotary friction welded AISI 1045 – AISI 316L has been explored [4].
Table 2 presents factors and levels determination for the experiment.
Factors and levels determination.

Marshall tests were carried out to evaluate the effect of different modifiers on the property of these asphalt paving mixtures.
These results indicate that NMMT/SBS as a composite modifier can result in excellent properties for asphalt paving mixture.
The resulting composite materials exhibit enhancements in thermal, mechanical, and functional properties [3,4].
The performance enhancement derives of some factors.
On the other hand, in the asphalt paving mixture, nano-scale particles can improve the interfacial properties and affinity between asphalt and aggregate, which can effectively restrain water to penetrate and enhance moisture susceptibility.

Hardening by melting and rapid solidification and surface mechanical deformation allow to change the properties without modifying its composition [1].
In FS, a viscoplasticized solid state region is generated and processed into a new shape and properties.
The material should be selected based on mechanical, thermal and physical properties of metals [11].
[18] Sakihama, H., Tokisue, H. and Katoh, K. (2003) Mechanical properties of friction surfaced 5052 Aluminum alloy, Materials Transactions, 44(12): 2688–94
Vilaça, Procedia CIRP 7 ( 2013 ) 341 – 346 [22] Factors Affecting Friction Coating on Stainless Steel 304, G.

Mechanical Properties Analysis on Elongation Type of Pneumatic Artificial Muscles Geng Dexu 1,2, Zhao Ji 1, Zhang Lei 1 and Zhao Yunwei 1,2 1College of Mechanical Science and Engineering, Jilin University,Changchun 130022, P.R.
Therefore, the mechanical properties of the PAM directly influence the performance of the flexible joint.
An analytical modeling of the PAM is proposed and discussed with both mechanical and experimental approaches for its mechanical properties, it will give the direction of flexible joints and robot’s dynamic performance analysis and motion accuracy control.
The total volume of the rubber tube is not changed during the deformation according to the properties of rubber,and the outer diameter of the rubber tube is not changed as a result of the constraint on the tightly twisted spring.
(a) Experimental data (b) Theoretical data Fig.9 Bending deformation vs. the bending moment Conclusions The mechanical properties of the developed elongation PAM is investigated including its axial elongation deformation as well as bending deformation.

However, the mechanical properties of heat treatable cast Al-Si-Mg alloys, such as A356, are strongly influenced by the prolonged exposure at high temperature [1].
However, a complete set of data on the C355 high temperature tensile behaviour and on the influence of SDAS on its mechanical properties is lacking.
It is well known that the main factors that affect particle cracking are particle size, particle aspect ratio and the stresses applied on the intermetallic phases.
Characteristics of cast Aluminium–silicon alloys—microstructures and mechanical properties.
Sieniawski, Microstructure and mechanical properties of C355.0 cast aluminium alloy, Archives of Materials Science and Engineering, vol. 47, 2011, 85-94 [11] A.M.