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It is clearly evident that the factors influencing cement hydration depends on the continuous availability of surface moisture without evaporation.
From the experimental investigations conducted on different factors for improving the fly ash based concrete has shown significant increase on the pozzolanic reactions, the addition of accelerating admixture on the fly ash based cementitious systems need further investigation to explore the improvement on the early age setting properties, the importance of accelerator curing needs special attention on fly ash based concrete systems.
The effect of accelerated strength gain properties of low and high volume Class F fly ash based concretes with the influence of different curing techniques was found to affect the overall strength gain of concrete systems for different testing periods.
The test results clearly indicate the relative advantage of different parameters such as accelerator dosage and steam curing affect the relative hardening properties of fly ash mixes.
This relationship can be useful to predict the general relationship existing and can be a useful tool to predict the mechanical properties of concrete.

Plastic deformation at high temperatures affects these phase transformations, but also low-temperature deformation leads to different properties of the resulting microstructure, and can be influenced by recrystallisation annealing.
Multiphase steels The different phases that have been discussed in section 2 are in general very diverse in their mechanical properties: ferrite is not strong, but very ductile, martensite is extremely strong and brittle, pearlite and bainite have intermediate properties, which strongly depend on the internal carbide distribution.
It is clear that a wide range of (mechanical) properties can be obtained for multiphase microstructures, but the relation between the microstructure and the properties is not straightforward for complex multiphase microstructures.
It is known that martensite can contain carbon concentrations between approximately 0.3 wt.% and over 1 wt.%, which is a condition that is to be taken into account when considering the mechanical properties.
Thomser, Modelling of the mechanical properties of Dual Phase steels based on microstructure, Ph.D. thesis, RWTH Aachen, 2009 [28] S.O.

Finite Element Analysis of the Pressing Screw in Screw Press Nanhui Yua, Shilong Li, Dewen Liu School of Mechanical Engineering, Wuhan Polytechnic University, Wuhan, 430023, China ananhui_yu@hotmail.com Keywords: Screw Press; Pressing Screw; Finite Element Analysis Abstract.
The construction of screw press is important, which directly affects the quantity and quality of produced oil [4].
So the analysis is made to each pressing screw respectively, meanwhile, it needs to consider the loads from mechanical conversion.
(a) No.4 pressing screw (b) No.7 pressing screw Fig. 2 Three-dimensional models of pressing screws According to the structure characteristics and load conditions of the pressing screw, Solid92 type element is selected to mesh its three-dimensional entity model, and 40Cr hardened and tempered steel is adopted as its material which has good comprehensive mechanical properties, the resulting finite element model is presented in Fig. 3.
In this paper, we only consider three major loads, that is, axial force, radial force and circumference force, but not include a number of other factors in the actual conditions.

The determination of material properties is particularly relevant in the field of investigation of mechanical characteristics of live tissues [8] due to the relative simplicity of the performance of experiment and, often, insufficient volume of the material, which does not allow to perform the test of another kind.
In particular, the scale factor affects the indentation curves, which many researchers use to determine the elastic constants of the material [1, 2, 3].
The results of experiments on nanoindentation will only reflect the essential properties of the material when the material sample is sufficiently "large" in comparison with the radius of the spherical indenter.
Giannakopoulos, Evaluation of material properties of incompressible hyperelastic materials based on instrumented indentation of an equal-biaxial prestretched substrate, Int.
Ogihara, Parameter identification of hyperelastic material properties of the heel pad based on an analytical contact mechanics model of a spherical indentation, Journal of the Mechanical Behavior of Biomedical Materials. 65 (2017) 753-760

Although intensity and rigidity computation results from traditional materials mechanics computation methods are satisfactory , but not all of the stress concentration factors and their possible consequences are taken into account.
The goal is to find the best structure which brings into play it is highest given properties or close as possible to them.
Optimization design, some of data are considered as parameters, such as control variable x, by means of which one can tune the structure until optimal properties are achieved.
The control variable x may be various and can reflect material properties in the natural structure.
Gong Shuguang, Xie Guilan, Mechanical design based on shape optimization[J], Mechanical Design and research, 2002, 18(5),p.41 [5].

Fatigue is influenced by numerous factors such as the type of stresses, environment, temperature, etc.
These factors bring complexity in fatigue life prediction.
Concentration would be more on the mechanical properties of the human teeth, and so the data gotten would be based on some of the mechanical properties of the teeth.
Yu, “Review of research on the mechanical properties of the human tooth,” Int.
[24] “Mechanical Properties of Dental Materials | Pocket Dentistry.”

Introduction AA7050-7.5% B4C-T6 Composites are generally used as structural components of aerospace and automobiles due to their higher mechanical properties.
The predominant factors of electro-discharge machining are peak current, Pulse on time, and gap voltage [6, 7].
Evaluation of wear properties of stir cast AA7050-10% B4C ex situ composite through fuzzy-TOPSIS MCDM method.
Study on the Development of a Quaternary Layer of B4C-TiB2-Al3TiAl in AA7050/B4C Ex-Situ Composite and Influence of Heat Treatment on Mechanical and Wear Properties.
Synthesis, properties and EDM behavior of 10 wt.-% ZrB2 reinforced AA7178 matrix composites.

Therefore, this problem may crucially influence mechanical properties and significantly decrease reliability of solders.
The factors which affect the fb-Sn may be nucleation and growth.
The kinetics of nucleation or growth may affect the excess of volume fraction of primary phase.

Introduction SiC nanowires (NWs) are attractive because of the wide band gap, high electrical breakdown strength, radiation resistance, mechanical strength and thermal conductivity of this material.
In combination with high chemical stability and biocompatibility, those properties make SiC NWs very promising for biomedical, sensor, and other applications in harsh environments [1-3].
A wide range of growth conditions were employed to investigate the factors affecting NW growth by the vapor phase catalyst delivery mechanism.

Since the medium transmissions are sold in the market for some time,the users often complained that the countershafts cracked easily.They do not reach the standard required.Once the automotive transmission occurs the countershaft’s fault which leads gearbox fractured and other parts damaged.The bus couldn’t run and operate.The company trade had suffered greatly during these accidents.The passengers complain bitterly that they had been unfairly treated.Usually,a transmission is made only by a static design,without the dynamic design.The traditional design method has affected the products’quality and reliability.The dynamic design might give a account of the vibration analysis[1,2].Because of large diameter of the intermediate shaft,the torsional vibration isn’t analysed during the shaft designed.The calculation method on the torsional vibration still needs to be further expand in China.On the torsional model,the shaft-system is usually divided into a multimass rotor system.This procedure
According to the mechanical properties of its material and selecting the safety factor,the design of the shaft meets the strength requirements and sufficient safety margin.
References [1] Zhong Yie.Rotor Dynamics[M].Beijing:Tsinghua University Press.1979 (in chinese) [2] Wen Bangchun,Gu Jialiu,Xia Songbo,Wang Zheng.Higher Rotor Dynamics[M].Beijing: Mechanical Manufacture Press,2000 (in chinese) [3] Gasch R.
(in chinese) [7] XIE Dan-mei,LIU Zhan-hui,YANG Chang-zhu,WU Yun-peng,LIU,Xian-fei.Sensivitity Analysis of the Torsional Vibration Behavior of Turboset’s Rotor System to Changes of Its Mechanical Parameters[J].Power Engineering.Vol.25 (2005),p.465-467.