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Influence of superplasticizer S-3 on the technological properties of concrete mixtures Yu.
The most important technological properties of concrete mixtures are workability , resistance to water gain, and mortar separation, keeping properties in time , air entrainment .
Factors affecting the plasticizing ability HP are the specific surface of cement content of C3A , Na2O and SO3 [10].
The effect of S-3 on the properties of concrete mixtures with different cements studied extensively.
Fig. 2 and 3 show the dependence of the properties of concrete mixtures containing an additive superplasticizer S-3.

Influence of Blank-holder Force on Springback of Cap-shape Parts Bending Chunjian Su1, a, Shuangshuang Miao1, b, Linjing Xiao1, c, Sumin Guo1, d and Li Gao1, e 1 College of Mechanical and Electronic Engineering, Shandong University of Science and Technology, Qingdao, 266510, China asuchunjian2008@163.com, b2005-mss@163.com, cxiaolj2008@126.com, dgsf266@163.com, eLigao19@163.com.
There are many factors, which will affect the springback, the springback amount of bending parts will has a great change because of the volatility of material property and the change of friction conditions for each obiect to be processed, even if other forming condition are the same.
So it is necessary for the forming process of complex shaped bending parts to do same more in-depth theoretical and experimental research to arrive at the influence of various factors on the forming process and springback, and to reduce production cost and improve production efficiency and precision through seeking more effective methods.
In this region, there is bending moment and a bending curvature affecting the sheet metal, The distance between die and punch is very small by comparing with the bending stroke, and the radius of bending curvature is very large, so this region can be seen as a straight line.
Mechanical Engineering, Vol. 16(2003), p.190-192

With the expanding application fields, the demands for metal fiber are no longer confined to the mechanical and physical properties.
In this paper, we obtained continuous stainless steel fibers with complex surface morphology by utilizing self-made multi-tooth tool and revealed how the cutting parameters affect the forming process of fiber surface morphology.
This experiment was carried out under selected tool and fixed workpiece rotating speed conditions, by changing back engagement and feed rate, we studied how the cutting parameters affect on the forming process of fibers' surface morphology.
To minimize tool wear and other factors' interference on the results, the experiments conducted in groups.
Tang, et al: Chinese Journal of Mechanical Engineering, Vol. 41 (2005) No.3, pp.211-215.

In the bridge service, the structural damage cannot be avoided [2-3], which is effected by many factors, e.g., the unsuitable maintenances, the accident, earthquake and erosion etc..
The disadvantages of local procedures include- Subjectivity based on the experience of test personnel; poor structural integrity because of unpalpable locations; bad real time capability which cannot be early warning in time; affecting the normal traffic, especially the load test.
As for uncertainty factors of bridge structures and complicated working environment, there is a bad influence for sensitivity of dynamic parameters.
The whole working status is evaluated through global procedures; and so the mechanical properties and safety function can be understand from global concept for making maintenance strategy.
During the construction and service period of bridges, bridge safety, applicability and durability will be decreased because of external factors (e.g. vehicle, wind and man-made action) and internal factors (e.g. material degradation and fatigue effect).

Abstract: This paper analyzed the mechanical properties of the web opening nodes on the steel frame which considered the combined effects, with the finite element analysis software ABAQUS .
Bo Li and Xiuli Wang [2-3]research the failure forms and mechanical characteristics of beam column joints under static loads by experiments, analyzes the influencing factors on the formation of plastic hinges by finite element analysis and gets reasonable size range of web opening.
Comparative Analysis of two Finite Element Models To study the influence of web opening on combined node, this paper uses the same structural dimensions, same material properties, same calculation criteria and the same loading.
Acknowledgments: This work was financially supported by the open project of Structural Engineering Laboratory in University of Sichuan Province and the Scientific Research Projects of Education Department in Sichuan Province of China (13ZA0187) : Research on low cycle fatigue properties of 500MPa High-strength Fine-grained Steel.
The Experimental study on mechanical properties of the steel frame beam web opening connection [J].

The effect of sliding parameters on the wear properties was investigated.
In our previous works [9], we reported that when the volume of reinforcement increased from 10 to 20 vol.%, a significant increment in mechanical properties was obtained.
Microstructures and mechanical properties All the composites are mainly constituted of three phases, which are Al2O3, Si and Al phases as shown in Fig. 1(a-d).
Huang, Microstructures and mechanical properties of in situ Al2O3/Al-Si composites fabricated by reaction hot pressing, Metall.
Purcek, Effect of copper content on the mechanical and sliding wear properties of monotectoid-based zinc-aluminium-copper alloys, Tribol.

However, the poor mechanical properties of HA with regards to its brittleness and low fracture toughness restrict its use in load bearing application [1-2].There were several approaches for the improvement in mechanical properties of the HA.
A well-known method of improving the mechanical properties of HA specimens was based on the synthesis of composites made of HA and other reinforcing phases.
Bioinert ceramic oxides like alumina (Al2O3) and zirconia (ZrO2) having high strength was used to enhance the densification and the mechanical properties of bioceramic[3].
It was reported that HA and titanium composites showed significantly higher mechanical property [4].
The porosity, α-TCP and β-TCP contents affect the dissolution behaviour, strength and biological properties.

Its unique physical, chemical and mechanical properties are outstanding, and could allow the preparation of this composite material with unprecedented characteristics, such as superior electron mobility, good conductivity, excellent transparent property and high chemical stability.
This novel material has attracted a lot of scientific interests because of its unique properties, such as high electron mobility (200 000 cm2v-1s-1), high thermal stability (~5000 Wm-1K-1), and optimum mechanical properties (~1.0 TPa) [1-3].
The increment of C is due to the presence of oxygenated bonds generated from KMnO4 and stirring duration is one of the main factor will affect the amount of material composition.
Geerlings, Ab initio study of the elastic properties of single-walled carbon nanotubes and graphene, Chem.
Yu, Synthesis of N-doped graphene by chemical vapor deposition and its electrical properties, Nano.

Introduction For over a decade carbon nanotubes (CNTs) have been the source of abundant theoretical and experimental research due to their extraordinary mechanical, electrical and optical properties [1].
Since the properties of CNTs vary depending on their structure, synthesis method development has targeted selective formation of CNTs with controlled diameter, length and chirality, as well as the number of concentric graphite walls.
This work aims to promote the understanding of the basic mechanisms of CNTs formation in the CVD by investigating the conditions for CNT growth, the factors affecting CNTs length, and the sizes and types of catalyst particles, which subsequently determine the formation the CNTs.
Avouris, Carbon nanotubes: synthesis, structure properties and applications.

Zuckerdolomit may occasionally respond to mechanical impulses with a complete break down of its structure.
Moreover, taking into account the elastic constants for both minerals, which differ approximately by the factor two, the special geomechanical behaviour of the studied Zuckerdolomit appears to be considerably determined by interactions between its residual strain and textural properties.
This lithic type of Zuckerdolomit is feared by miners and engineers because, in the case of changing mechanical load (impulses), a complete collapse of the grain structure, followed by rock liquefaction and catastrophic ingress of mud streams was frequently observed.
Residual stress, the structure of rock complexes and their textural properties are of great importance for the estimation of rock behaviour within deformation processes.
Concluding from these observations we may suppose that petrophysical features of the (studied) Zuckerdolomit may affect its geomechanical behaviour to a greater extent than assumed so far, especially in comparison to the importance of anhydrite hydration.