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However, the ash derived from the coal mostly falls into the Portland cement clinker, influencing the composition and property of cement clinker.
And the clinker quality is directly affected by the quality of raw meal and calcination.
The three modulus of clinker, namely KH, SM and IM, are the most important influence factors of clinker’s quality.
The detecting result suggests that all the mechanical indexes meet the design requirement and the quality of the RCC reaches the inspection standard.
The moderate heat Portland cement has excellent physic properties, lower pot temperature and less hydration heat, which effectively guarantees the quality of the engineering, and all the physical mechanics indexes reach the design and regulation requirement.

Computer Aided Optimal Design and Dynamic Analysis of Piezoelectric Braille Display Cell Fung-Huei Yeh 1,a *, Huoy-Shyi Tsay 1,b and Chung-Chieh Yang 1,2,c 1Department of Mechanical and Electro-Mechanical Engineering, Tamkang University, No.151, Yingzhuan Rd.
Basic theory Piezoelectric Material Properties.
First, the piezoelectric analysis of the piezoelectric actuator shows that the electric displacement and output force are mutually affected.
Especially the length of the free end to the clamped position is the most significant influence factor.

Abou Zour3,c 1Department of Mechanical Engineering, UAE University, Al-Ain, P.O.
Failure of pump casings has been reported to be one of the critical factors defining the reliability and service life of a pump [1, 2].
One set was used as a control set for testing the electrochemical properties of the stainless steel in regular hot brine without inhibitor.
The other set was used to get the same properties when the stainless steel samples were subjected to the same brine environment in the presence of a passivating Molybdate corrosion inhibitor.
In fact this is adversely affecting the metal passivity as cyclic sweeps are showing a relative decrease to the pitting potential when compared to the uninhibited pitting potential.

INFLUENCE OF STRESSES BELOW THE FATIGUE LIMIT ON FATIGUE LIFE Grzegorz SZALA University of Technology and Life Sciences in Bydgoszcz, Faculty of Mechanical Engineering, Department of Mechanics and Machine Design, Department of Machine Design, Kaliskiego 7, 85-789 Bydgoszcz Keywords: Stress, fatigue limit, steel C45.
It is commonly accepted that variable stresses with constant amplitude of values below 0.4 of the fatigue limit do not cause plastic strain in grains (lines and slip bands), thus they do not affect the fatigue life.
According to the above mentioned work, this influence is determined by a few factors, mainly by the maximal value of amplitude in the spectrum and the spectral absorption coefficient.
Static properties of steel C45 under tensile loading are as follows: yield limit Re = 460 MPa, tensile strength Rm = 682 MPa, resilience module E = 215000 MPa, elongation A5 = 24,3 % and reduction of area Z = 44,3 %.

Polishability is a measure of how easy it is to perform surface polishing in tool steel, being affected by various metallurgical factors.
Some changes in the metallurgical properties can generate substantial improvements in the machinability parameters, such as, for example, the addition of sulfur which facilitates chip breaking.
By this chemical balance, the mechanical properties are very homogeneous: uniform hardness.
Barbosa: Proceedings of 20th International Congress of Mechanical Engineering, Gramado (2009)
Kortesoja, in: Properties and Selection of Tool Materials, edited by American Society for Metals, 3. ed., Ohio (1975).

Therefore, hardened SCC has well durability and mechanical properties.
SCC has the environmentally friendly effect, its use can reduce resources and energy consumption, reduce the effect of greenhouse accordingly, because of such factors as： (a) The amount of cement can be reduced in unit volume concrete.
Comparing SCC with other traditional fluid concrete compacted by vibrating, it is more important to control rheological properties （yield shearing stress and plastic viscosity） by quantity.
We have done some tests relating to rheological properties of concrete, such as measuring the slump, the slump flow and the slump flow speed by using a slump cone, measuring the emptying time from a reverse slump cone and Orimet-meter, measuring the flow distance, the slump depth and the flow speed by using L-shaped trough, at the same time observing the behavior of concrete under test.
Using SCC for strengthening can obtain good result, because it has good flow-ability, stability, self-compactibility, mechanical properties and durability.

Currently, the mine has been converted to open-pit mining, underground goafs (Figure 1) are gradually revealed more and more closely to the step surface, the early legacy of underground goafs seriously affect the safety of production, and they are at the risk of threatening the safety of enterprise constructors and the on-site equipment1.
Firstly, we divide empty areas into some parts according to the differences of floor and roof elevation; and then drawing closed contours for each partition, the contours is executed under the command of poly-line in CAD, and is given elevation in the properties (the partition’s backplane elevation) ; later calculating the height between the roof to the floor, using closed contour to generating surface domains, and then stretch surface domain to generate a partition three-dimensional model; after the formation of each partition model, implement Bool and to get the overall three-dimensional model of these partitions.
The properties of rock material According to the litho logical characteristics in Molybdenum ore open-pit mining site and with reference to the rock mechanics standards and relative experience, the size of the reduction factor of selected rock is as follows: Modulus of elasticity: Poisson's ratio: Angle of internal friction: The compressive and shear strength: Tensile strength: Table 1.
Due to space limitations, this article only involves a single attribute of rock stress analysis, the questions such as: how the mechanical analysis for a variety of ore and rock properties is related to many types of ore’s three-dimensional modeling of coupling, the process of merging of mesh node in the adjacent surface, etc, will be discussed in the follow-up study.
As for the step surface with empty areas, under the circumstance of considering static load conditions of the rock weight, the ore loose body, and the heavy equipment, we should find out those areas of collapse danger according to the parameters of the rock mechanical properties in order to provide scientific basis for safe production planning.

At the same time it is known that alloying with iron, can affect [3-5] the corrosion resistance of the material.
Metallographic Analysis In order to improve mechanical properties and the structural uniformity of an alloy grain refiner agents are added.
During the homogenization heat treatment, before hot rolling is carried out at 600°C, a part of the Mn, present in the intermetallic compounds, spreads into the aluminium matrix, improving the mechanical properties.
The experimental tests carried out to determine the cause of adhesion loss in food containers, made of Al alloy 8006, indicates that several factors can contribute to failure.
In our opinion, to avoid the possibility of loss of adhesion, for this type of container, the chemical composition of the Al alloy should be controlled carefully, reducing the amount of iron to maintain the right balance between the mechanical properties of the alloy and its corrosion resistance.

Three main material properties evaluated.
Inconel718 is difficult to machine, because of its poor thermal properties, high toughness, high hardness, high work hardening rate, presence of highly abrasive carbide particles and strong tendency to weld to the tool to form build up edge [1].
Excessive electrode wear seriously affects EDM electrode using life, damage the machining precision and surface integrity [6-7].
From the aspect of material, the internal micro-structure of electrode materials was a key factor.
It can determine the electrical and thermodynamic properties of the electrode, such as conductivity, melt-point, boiling points and thermal conductivity.

The study of Ni–Mn system with the structural transfer accompanied by a change of magnetic properties is relevant for fundamental and applied research.
Therefore, a study of structural states and physical properties of ordered Ni3(Mn,Ti) alloys is very important.
Fig. 6b-h presents temperature dependencies of their physical properties.
It is well known that in alloying the metal structure is affected by many factors resulting in a phase formation having structures differ from that of each element.
Ono, Magnetic properties in Ni–20 at.% Mn mechanical alloy, Journal of Alloys and Compounds. 398 (2005) 152-155