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This constitutes the necessity to study the propagation patterns of cracks and its influence on mechanical properties of rock mass.
To simulate the physico-mechanical properties of sandstone, a new kind of rock-like mortar material mixed with cement, sand and water was developed, and its physico-mechanical parameters are listed in Table 1.
Inclination angle  affects the distribution of KII distinctly.
Experiments were conducted to investigate the mechanical properties and fracture state of rock-like samples containing single inclined pre-existing crack under uniaxial tension.
FRANC3D was adopted to calculate the stress intensity factors along crack contour, and to simulate the crack growth process.

The mechanical and the optical sensing properties of the MEMS grating are both analyzed in this paper.
The research of mechanical characterization and optical sensing property will be depicted in section 4 and 5.
Other factors which influence the displacement of comb actuator are analyzed in the discussion part.
It is affected by many factors, such as the gap and the overlap between the comb-teeth.
The sensing properties have also been discussed and analyzed.

Many factors such as special topology structure characteristic of reinforcement, hardness and elastic module are discussed in this model.
The abrasive wear resistance of IPCs has been found to be significantly lower than that of matrix owing to the changes of microstructure, the morphology, the volume fraction and mechanical properties of reinforcing phase.
Mathematical model Wear losses of IPCs result from three distinct factors: the wear of the matrix, the wear of reinforcement phase and fracture damage of reinforcement due to cracks.
Owing to the special topology structure of IPCs, the distributions of compressive loads carried by reinforcement are different from the discrete phase reinforcement. 3-D geometry models of porous network structure (which were shown in Fig. 1a) can be used to estimate their mechanical properties based on the mechanisms of fracture failure.
[10] Gibson, L.J. and Ashby, M.F.: Cellular Solids: Structure and Properties (Cambridge University Press, Cambridge 1997), [11] E.

Therefore, all the progress in the field of press production is associated mainly with the development and improvement of technological preparation, providing improved mechanical properties [1,2,3,4].
Therefore, the nature, size and distribution of disperse particles as well as mean size of the grains affect the strength properties of ultra-fine-grained materials [7,20].
This leads to an increase in the strength properties of the alloy and retention of good plasticity.
Langdon, Effect of Mg addition on microstructure and mechanical properties of aluminum.
Lloyd, Factors affecting the strength and formability of alloys based on Al–3 wt.% Mg.

Related works on LMD-p on Ti-6Al-4V show that raw materials, process parameters, building strategies and post-treatments directly affect the final part properties (microstructure, defects, mechanical properties).
Some authors showed the influence of the chosen deposition pattern on the mechanical properties [3,8].
These treatments, since they have an impact on microstructure, defects and internal stress, influence the mechanical properties of the AM part [10,11].
In general, they are used to increase the mechanical properties.
The dilution rate is directly related to the parameters and combination factors.

On the other hand, mechanical factors such as low strength and toughness, has restricted the application of hydrogels for load-bearing surfaces such as synthetic cartilage, where formidable mechanical performance is required as well as wear resistance and damage tolerance.
Mixing of a less swellable, stiffer hydrogel with softer but more swellable one, will lead to tuning in mechanical properties of IPN, as well as its swellability.
It was observed that friction properties were significantly affected by lubrication and they decreased with an increase in the amount of applied load.
The sliding speed did not significantly affect the friction properties of the hydrogel, as shown in Fig. 2 (b), while the presence of the boundary lubricant contributed to reducing the friction coefficient by nearly 80%.
This shows the fairly strong wear properties of PAAm-Alg hydrogels that can be enhanced by other factors such as crosslinking density, which is the subject of future studies.

The nickel-based superalloy GH4169 is widely used in the aerospace industry because of its excellent comprehensive mechanical properties under high temperature and corrosion condition.
Finally, define analysising step, contact properties and boundary conditions
Material Constitutive Model The material constitutive model used to describe the mechanical properties of materials, to express the dynamic response in the process of material deformation.
The flow stress affected by deformation degree, deformation rate , deformation temperature and other factors is very significant.
Any changes in these factors will cause large changes in the flow stress.

The surface properties such as roughness, hardness and topography of orthodontic archwires may affect the sliding mechanics by influencing the coefficient of friction between the archwire and bracket [1].
Previous studies [3, 4] have reported the composition, transitional temperature range, and mechanical properties of several commercial NiTi orthodontic archwire.
This solubility allows alloying with many of the elements, which can be utilized to modify both the mechanical properties and transformation properties of the system [3, 4, 5].
Therefore, factors such as nickel content, aging, thermo-mechanical treatment, and addition of alloying elements that affect the structure, are important for controlling the memory behavior of these wires [3, 4, 6].
Triple stranded stainless steel wire evaluation of mechanical properties and comparison with titanium alloy alternatives.Angle Orthod. 57:18-32. (1987) [3] Dechkunakorn S, Isarapatanapong R, Anuwongnukroh N, Chiranavanit N, Kajorchaiyakul J, Khantachawana A.Mechanical properties of several NiTi alloy wires in three point bending test.

As clayey soil has weak physical and mechanical properties, stabilizers are added in the soil to increase its strength .The waste materials were Palm Oil Fuel Ash (POFA) and lake water (waste water).
The soil index properties was determined by carrying out the physical test and compaction test.
A total of 50 samples were prepared which were tested for unconsolidated undrained Triaxial test and pH test to determine its relative mechanical and chemical properties.
The factors that can change the properties of the soil are the ion changes (Cation and anion) and the degree of acidity and alkalinity of those waste in the water [4].
Mechanical Property of the soil specimens are determined.

a johann.cho@imperial.ac.uk ba.boccaccini@imperial.ac.uk Keywords: ceramic matrix composites, carbon nanotubes, mechanical properties, sintering, glasses Abstract Carbon nanotubes (CNTs) are promising reinforcing elements for structural composites due to their remarkable mechanical properties.
However, it should be noted that the surfactants may introduce undesirable impurities which can affect the sintering process and/or the as-produced composite properties.
Mechanical properties and relevant toughening mechanisms A summary of mechanical properties achieved with CNT/inorganic matrix composites, as reported in the literature, is presented in Table 1.
Table 1 Overview of mechanical properties of CNT/inorganic matrix composites Matrix material C�T content Processing routes Investigated properties [(%) indicates property improvement compared to monolith] Year [Ref.]
However, it should be pointed out that the real value of CNTs lies in their range and breadth of properties, which include mechanical, electrical and thermal properties.