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Although the initial properties of allogenic or xenogenic grafts resemble those of autologous bone in terms of biomechanical stability and elasticity, the lack of osteogenicity represents a limitation, even when osteoinductive factors are preserved during processing [10,11].
HA crystals are distributed within collagen fibres and determine the structural support and mechanical properties of bone [17].
Among the physicochemical properties, the solubility of the material plays an important role and significantly affects the biomaterial's stability in vivo.
It is known that PLA flexural mechanical properties are very low in comparison with cortical bone properties.
Addition of an inorganic phase into the PLA matrix increases the mechanical properties of the material, leading to mechanical properties' values closer to those of bone and, hence, allowing a better load-transfer to the newly formed tissue [102].

Result and Discussion Materials properties result.。
The decrement in mechanical properties of concrete containing PET aggregate was related to low adhesive strength between PET aggregate surface and the cement.
Furthermore, the density of materials play a major role on mechanical properties of concrete, Therefore, the declination of the mechanical properties also can be extended to the low density of PET aggregate compare to the conventional fine aggregate [3]-[7].
The factors attributed to the reduction of shear force at the ultimate failure have been previously discussed.
Furthermore, the low adhesive strength between PET aggregate and concrete paste reduce the ability of interlocking between the aggregate that affecting the interface friction in resisting shear stresses.

Zu and Lin [6] optimized the mechanical properties of injection molded W-4.9%Ni-2%Fe in debinding.
In Table 2, the combination of A2, B1, C1, D2, E2 and F0 shows the largest value of the Grey relational grade for the factors A, B, C, D, E and F, respectively.
The rest of other factors and all interaction factors are not significant affecting for high green quality even though it give contribution during injection molding process but the confidence level are less than 90%.
The rest of other factors and all interaction factors are not significant affecting for high green quality because the confidence level are less than 90%.
Lin: Optimizing The Mechanical Properties of Injection Molded W-4.9%Ni-2%Fe in Debinding.

And we have analyzed and eliminated the errors which may affect the result of the hardness test to ensure the reliability.
At the same time, it summed up the causes of errors and the methods to avoid and reduce the errors during the Rockwell hardness test, and analyzed the hardness tester load, pressure head, the structure as well as the test sample roughness, shape and other factors which influenced the measurement results.
In this paper, a Rockwell hardness meter N80 oil casing hardness test is used as an indicator of the N80 casing mechanical performance of the mechanical properties of the N80 oil casing to inspect and analyze.
The hardness and other mechanical properties have a certain relationship, parts and other mechanical properties of the material. but due to the simplicity of the hardness test, during the test easily cause it the results have a greater change factors also will be changed, so it is very important for the study of the sources of error in the hardness test and for avoiding errors.
[6] LI Xiao-dong, Influence Factors on Rockwell Hardness Test Results, Heilongjiang Provincial Station for Test and Checkup of Farm Machinery, China, Physical Testing and Chemical Analysis, 4(2010).

Mechanical, thermal, and filtration properties can only be precisely estimated if the morphology of both solid matter and porosity can be quantitatively determined.
Indeed, the anisotropy of the thermal expansion is widely used to tailor the thermal and mechanical properties [6].
In general, porosity and pore morphology directly determine the effective mechanical properties of porous ceramics [7].
Pore and grain orientation explicitly enter in current models used to extract mechanical and filtration properties [8].
[5] W.D.Kingery, Factor affecting thermal stress resistance of ceramic materials.

Ambient Blooming Behavior and Mechanical Properties of Vulcanized Natural Rubber Loaded with Non-Ionic Surfactants Denise Ester O.
Fillers are added as reinforcement to increase the mechanical properties [2, 13].
The mean effect (E) of a factor to ambient blooming behavior and mechanical properties of VNR specimens was calculated using Eq. 2 [5, 20, 22, 24]: (2) where y corresponds to bloom rate or mechanical property of VNR, n is the number of measured responses, and subscripts a and b are the low and high loadings of factors, respectively.
Mechanical Properties.
Decrease in mechanical properties of VNR was observed due to the presence of excess used oil and zinc stearate on the rubber matrix which resulted to softening of the rubber matrix and decrease in mechanical properties.

For obtaining the desired properties, it is necessary to find out related factors resulting in different morphology and crystal structure of PSC fibrils.
From present work, we expect to find some clues, which can be used to improve the mechanical properties of fibrillar PSC products as well as underlie our further development of artificial tendon which is underway.
Results and Discussion The morphology of fibrils formed from PSC solution by salting out is affected by various factors, including specific ions, pH, temperature and even the manner of adding salts.
By analyzing the various conditions of fibril formation, we may have better understanding to the factors affecting PSC fibril formation that may be references to modulate or improve the mechanical properties of fibrillar PSC products.
Conclusions The morphology of fibrils formed from PSC molecule solution by salting out and by gelation is affected by various factors, including specific inorganic ions, pH, temperature and even the manner of adding salts.

The intensity factors as well as the mechanical energy release rate and the total energy release rate has been analyzed for different electro-mechanical boundary conditions.
Finite element analyses and its numerical errors of intensity factors, total energy release rate (G), mechanical energy release rate (GM) and energy density factor of the piezoelectric center crack problem have been obtained by Liu[4].
The functions and, are the standard angular functions for a crack in a homogeneous piezoelectric-elastic medium, which depend only on the material properties and can be determined by means of the extended Stroh formalism and semi-analytical calculations.
Intensity factors and energy release rate.
It is observed that the error in IFs has affected the total energy release rate G as well as in the mechanical energy release rate GM

The mechanical properties of the ceramics were measured and indentation shapes and radial crack propagations were observed.
Here, the mechanical properties of the ceramics are investigated.
Results and Discussion The mechanical properties varying with nonstoichiometry n of Mg-Al spinel transparent ceramics are illustrated in Fig.1.
The increasing feature of strengths is attributed to three factors as follows.
The mechanical properties of non-stoichiometric ceramics are obviously better than those of stoichiometric ceramics.

The machine will be affected by external and internal factors that lead to a loss of precision.
, (4) where c – coefficients of transfer relations; TS – tolerances of technological dimensions; kext, kint, kd, kTe – factors shaping the tolerances of operational dimensions, respectively, for the internal and external factors, durability, design scheme precision used to define the parameters of operational properties.
Values of the additional operational units are functions that are defined by external and internal factors.
Internal factors are parameters that determine the operational properties of the mating surfaces: material of parts, lubricants, quality parameters of the surface layer etc.
The criterion Q takes into account the complex of design and technological and structural constraints of the accuracy matrix and surface properties, economic factors of the objective function, at that, it is a dimensionless quantity that does not change the physical sense.