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Physical properties and mechanical properties of raw materials used and mortars obtained were investigated.
The study of the influence of theses raw powder on mechanical properties of mortars was evaluated using several parameters: Activity Index (AI), Strength Gain (SG) and Efficiency factor (k-factor).
Physical properties and mechanical properties.
Influence of ratio, k-factor, activity index and strength gain of raw powder on mechanical properties.
This can demonstrate than despite the amount of replacement (rp) and chemical and mineralogy of raw powder, other factors such as mixture condition and parking in moulds condition the mortar have relative influence on mechanical properties.

The article discusses the properties and features of heat-resistant titanium alloys.
The microstructure of a new titanium alloy VT41, its mechanical and service properties after various processing modes are presented.
Due to its unique mechanical properties, heat-resistant titanium alloy VT41 is very difficult to machine on metal-cutting machines.
Mechanical and service properties of titanium alloys differ after different processing modes.
Due to their mechanical properties, most titanium superalloys are difficult to machine, which leads to problems when machining on metal cutting equipment.

Introduction Titanium alloy is widely used in the fields of aviation, aerospace and automobile industries for its excellent properties (corrosion resistance, high specific strength and heat intensity).
That is to say, dynamic cutting force in the traditional milling process will lead to the dynamic displacement of the workpiece, affecting the deformation and the geometric accuracy of the workpiece.
Selections of factors and levels are listed in Table 4.
Thus, the values with the highest S/N ratio of factors in the experiments will give the best performance.
(3) The optimum control factors for the thickness error and the deflection displacement of thin-walled parts of the titanium alloy were obtained.

The physical and mechanical properties of the composites were evaluated based on the SNI 03-2059-2006 and SNI-01-4449-2006 standard.
This epoxy resin is water, heat, and chemical resistant material, flexible and has strong mechanical properties and good electrical insulating properties [6].
This study aims to determine the physical and mechanical properties of rice straw hydrophobic composites and the effect of volume fraction and alkalization treatment on fiber.
The cellulose content is influenced by the place of growth, the type of biomass, the age of the plant, the location in the plant stem and environmental factors [17].
And one of the factors that affect the bond between the fiber and the matrix is voids, namely the presence of gaps in the fiber or imperfect shape of the fiber which can cause the matrix to be unable to fill the empty space in the mold.

Results and Discussions Ablative Properties.
Mechanical Properties.
The mechanical properties of the composites remain at an acceptable level [15].
Wang et al., Mechanical Properties with High Temperature and the Microstructure of Carbon/Phenolic Ablative Composites, J.
Winya et al., Study of factors affecting the ablation rate of phenolic resin/fiber glass, Int.

The similar material model method is used to simulate to the movement of cover rock and ground which is caused by mining underground coal, the substance of deformation and failure law of similar material model  method is that artificial materials which are used in the experiment have similar physical and mechanical properties as archetype, affinity constants of geometry, movement and force are used as similarity index and criteria in the simulation experiment as the most important factors.
It studies the physical and mechanical processes which are affected by many factors are much more complex. is to considerable difficult to study mathematical and mechanical analysis or field measurement of production .
As experimental investigation of simulating similar materials based on the Newton similarity theory, Follow similar principles must be followed: 1 Geometric similarity: Assurance model is proportional to the prototype in the geometric shape 2 Kinematic similitude: requirements of the corresponding points of model and the prototype Acceleration and time etc proportionally are needed. 3 Dynamic similarity: Assurance all the forces in model and the prototype are similar; For strata movement, the gravity force are major. 4 The initial state similitude: The initial state is the natural state of the prototype, as the rock structure and the structural surface are uniform, the distribution of its mechanical properties of Rock structure and surface structure must be considered in the model in order to meet similar requirements of the prototype. 5 Boundary conditions similitude: Models and prototypes must be ensured the consistency of displacement and stress of the contact surface in the border
The rock of Roof and floor of coal seam are dark gray siltstone, dark gray siltstone and so on stratigraphic configuration and mechanical properties of coal petrography as follows: Plane stress model is employed in this paper, the length of the model is 2m, and the width is 0.2m and the height is1.2m. the mean obliquity of half-edge coal seam is 80.Mining depth is 1000m.

Under the same technological conditions, it was found that the critical factors affecting the electrolyte service life are the single-processing area and the electrolyte volume.
Introduction Magnesium is the lightest of the structural metals, and has excellent physical and mechanical properties [1-2].
The study about micro-arc oxidation is focused on the influence of power supply, parameters and electrolyte on the coating performance such as the wear resistance, corrosion resistance, electrical insulation, micro hardness, and adhesion to substrate [6-8], much less on the electrolyte service life and its influencing factors in the continuous work.
In this present work the influencing factors of the electrolyte service life on AZ91D will be researched.
And the influence of these factors needs further research.

Materials and Methods 2.1 Fabrication of composites AA-6082 has been chosen as a matrix alloy, and 35 micrometer-sized (avg.) 7.5% of alumina (Al2O3) and 2.5 % of MoS2 particles have been selected as reinforcements, owing to their superior physical and mechanical properties.
Later, the experiments were modeled according to ANOVA and Taguchi’s L18 (2^1×3^4) orthogonal array, to organize the parameters affecting the responses and their levels, using Minitab 19 software.
Factors and levels of the HMMCs Factors Notation No. of Levels Level Values Electrode type A 2 Zn-Br Br Wire Tension (N) B 3 6 7 8 Pulse On (µs) C 3 108 110 112 Pulse Off (µs) D 3 55 60 65 Peak Current (A) E 3 100 110 120 2.6 Analysis of Responses using Taguchi’s S/N Ratio Taguchi’s S/N Ratio measures how machining responses are affected by different noise conditions relative to its nominal value.
Results and Discussion 3.1 Mechanical Properties of the composites The mechanical properties of the composite were evaluated in our earlier studies and the basic properties of the composite under the present study are shown in the Table 3.
Mechanical properties of the composites S.No.

The shape of the backward radiation is affected by various factors such as the beam directivity, frequency characteristics of the transducer, dispersion and scattering of surface wave, etc [7].
This difference means that the other reasons affecting the backward radiation profile should be considered.
It is suggested that the acoustical property change by the accompanied micro-fatigue directly affecting the peak intensity needs to be considered.
Break-in procedure reduced the g value and resultantly suppressed the change of material properties affecting the dispersion relation. 0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0 2 4 6 8 10 12 Frequency(MHz) Velocity variational ratio(%) A B C Fig. 4.
Curtis: "The use of surface elastic waves in examining surface mechanical properties", in Ultrasonic Testing eds.

Although the carrier mobility decreases with temperature, the effect of these properties increasing will explain the overall increase in photocurrent.
Fill factor is a measure of how affected a device is by its non-idealities, such as series resistance and ideality factor.
This decrease in fill factor indicates that the device is degrading structurally and becoming more affected by non-idealities.
Increase in these properties has a detrimental effect on fill factor as they reduce the devices ability to output the electrical power it generated.
The power produced exhibits a positive temperature coefficient and a stable fill factor, indicating that the device is not overly affected by variations in series resistance and ideality factor.