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The influence of the applied load, the crack length, the mechanical properties and the shapes of the patch on the evolution of the J-integral was highlighted. 2.
Geometrical model and mechanical properties Figure 1 shows the geometry of the cracked structure analyzed in this work.
The mechanical properties of the plate are as follows: Young’s modulus E = 69 GPa, Poisson’s ratio n = 0.35, the yield stress σy= 243 MPa, the ultimate stress σu= 347 MPa and the elongation ξel = 21.85%.
Table 1 gives the elastic properties of different composites used for the repair.
Elastic properties of different composites.

The mechanical structure of the whole device is well designed realizing material circulation conveying.
Since the material property in this checking are the same as the reality material, the material checking is only reliable method in the four kind of checking.
There are two significant factors to affect calibration accuracy.
Through analysis we know that the main affect uncertainty error source include:1.the performance of small hopper weigher as control weighing instrument;2.
In order to reduce the influence of these factors on the calibration system, we should install some carrying rollers at the bottom of discharging inlet of the small hopper weigher .

Physical properties and biological performance of bioactive glasses and glass-ceramics tested in vitro V.
The bioactive properties of these glasses depend on the presence of large amounts of sodium and calcium modifier cations, which break the Si–O–Si bridges and lead to fragmentation of the silicate network on the account of the increased number of nonbridging oxygen atoms [3].
Understanding of composition-structure-properties relationship of these materials at atomic level is of great importance to obtain biomaterials for certain applications.
The tissue bonding ability of bioactive glasses, and generally of bioactive materials, is related to the presence of a hydroxyapatite layer on their surface, that promotes further cellular steps, such as incorporation of collagen and interaction with other biomolecules and tissue growth factors [6, 7].
Hill, Effect of P2O5 content in two series of soda lime phosphosilicate glasses on structure and properties – Part I: NMR, J.

This research was conducted to examine different factors that may affect calcium carbonate precipitation by urea hydrolysis.
It was concluded that at the concentration, 2.5 g can be proved best for the CaCO3 precipitation by keeping all other factors constant.
Recommendations This study can be extended further by determining the inhibitor factors that could affect calcium carbonate precipitation.
Nakamura, Purification and properties of urease from the leaf of mulberry, Morus alba, Phytochemistry. 53 (2000) 325–330. https://doi.org/10.1016/S0031-9422(99)00521-X
Zhang, Factors Affecting Improvement of Engineering Properties of MICP-Treated Soil Catalyzed by Bacteria and Urease, Journal of Materials in Civil Engineering. 26 (2014) 04014094. https://doi.org/10.1061/(ASCE)MT.1943-5533.0001013.

Introduction The magneto-rheological fluid made by dispersedly dissolving the soft magnetic material of micrometer size into carrier liquid of low permeability is a kind of material, the rheological property of which will change rapidly under the action of an external magnetic field and it shows some mechanical properties that are resemble to solid’s.
Building, Training and Testing of RBF Network Model The number of neurons in the input layer of the RBF network model depends on the influencing factors of the MR mount damping force, and through the above analysis it is known that the number is 3.
Because the units of the collected data are not consistent, in order to accelerate the training speed of the network, the data must be dealt with [-1，1] normalization and reverse normalization to prevent the difference between the data too large, meanwhile, also prevent some neurons showing the status of super saturation to affect the training process.
Fig.4 Comparison of indicator features of Fig.5 Forecast performance of RBF MR mount neural network Conclusion The output damping force of the MR mount on the automotive engine is influenced by a number of factors which have complicated correlations with each other.

Weld quality is greatly influenced by the weld parameters which directly or indirectly affect the response parameters.
For all the mechanical properties of the welded joint higher- the- better criterion have been selected.
From table(2 ), it has been seen that for some factor combinations the over desirability become zero.
Table 2: L16 Design matrix with the experimental values of the mechanical performance tests Expt.

The preferred appearance of strain localizations in deformed g-fibre grains has long been attributed to higher values of Taylor factor M [4,5] and/or stronger textural softening (-dM/de) [6] in g-fibre orientations.
Dislocation sub-structures are also affected by recovery and usually it is very difficult to demarcate dynamic recovery from plastic deformation.
Also, recovery is very difficult to quantify in terms of property/microstructural measurements [1].
If dM/de does not get significantly affected by the deformation conditions, then the increased presence of grain interior strain localizations is primarily caused by drm/de (reduced drm/de by recovery with corresponding enhancement of the role of dM/de).
Doherty, Thermo-Mechanical Processing of Metallic Materials, Elsevier, Amsterdam, 2007

Introduction The more progress of the society and the development of science and technology, the more widely of electricity used, and then also produced many unsafe factors.
Wire laying is not standard, lines no update for long time, wires aging, poor quality of the wires,so the number of fire more and more,and cause of casualties and property losses increased year after year [3].
Due to the low melting point of aluminum conductor, together with the more affecting factor of forming the trace, the organization formed in fire can also be different, so, in the practical application of the fire has yet to be studied further.
[6] Quankun Liu:Material Molding Basic Principle(Mechanical Industry Press,Beijing 2005).

In this study, thermal and optical properties (emittance and reflectance of solar radiation) of different colors ceramic tiles for use in outside surfaces were measured.
Although widely used in the brazilian residential market, these materials are not properly characterized with respect to these properties.
Therefore, the calculation of SRI depends on two key factors: solar reflectance (r) and thermal emittance (ε).
In this context, this study aimed to determine thermal properties of ceramic coatings for use on exterior surfaces of buildings.
It is worth remembering that SRI varies with two material properties: solar reflectance and thermal emittance.

Table 2 is the material properties used in the structure analysis.
The material properties used in the thermal analysis are shown in Table 2.
It means the relaxation layer would become the inhibiting factor of the heat flux.
Table 2 Material properties for structural and thermal analysis[12]-[14].
Low, “Physical and Mechanical Properties of Intermetallic Compounds Commonly Found in Solder Joints”, The Metal science of joining (1991) 165-174