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The corresponding values for the relevant mechanical properties of both materials were obtained from literature.
Fig.2 provides a timeline of the most common materials used in the period that goes from late XVIII century to mid XX century and presents their mechanical properties, as proposed by Bussell [3].
Figure 2 Dating and mechanical properties of historic metallic materials [4] Geometry survey.The aim of the geometrical survey was to verify and compare information contained in the original documents as well as to obtain the missing information required to build a reliable and representative numerical model.
Considering such nonlinear properties is useful in a failure analysis because the true strength of thematerial can be considered until complete failure.
Ignoring geometric factors can lead to inaccuracies in cases with large displacements, stresses, or rotations.

Physical degradation is caused by mechanical impacts that change material properties (humidity, temperature, etc.).
Properties of plaster (porosity and cracks) allow entrance of humidity in their structure.
Also we can change properties of this material by nucleating silver nanoparticles on nanofibers.
The final material has excellent bactericidal properties [4].
Properties of this layer can be modified in accordance with the results of computational model and the internal environment.

Previous studies demonstrated that the critical factors influencing failure of TBCs were the thermally grown oxide (TGO) at the interface between the bond coating and the ceramic coating, the mismatch of thermal expansion coefficients between the ceramic and the metal, and thermal stress generated by the temperature gradients in the TBC [3,4].
In addition, laser remelting treatment of plasma-sprayed TBCs is currently recognized as a promising means for enhancing the properties in a more punishing environment [9,10].
(a) overview; (b) interfacial region; (c) remelted region; (d) heat-affect region.
The main factors caused coating damage first is thermal stress generated within the TBC during thermal shock, then thermally grown oxide (TGO) generated at the interface between the top ceramic layer and the bond layer, phase transformation stress at last [3,4].
However, the coating consisted of a remelted layer, heat-affect layer and remained plasma-sprayed layer after laser remelting.

These applications require a variety of mechanical properties [1], such as high specific elastic modulus, high yield strength, appreciable ductility and resistance to creep at high temperatures.
The work presented in this article, takes advantage of an approach for creating DRA composites that can improve both the elastic and the mechanical properties [3].
The measured values in Fig. 2 should be taken as a general trend for the composite because factors other than the dispersoids size are likely to affect creep resistance.
However, these properties are obtained only if the spinel particle size is less than 1 µm.
As mentioned in the introduction, the design of technologically viable DRA composites requires not only mechanical properties as described above but also high elastic stiffness.

Its masonry materials have a good compressive property but bad tensile and flexural properties.
This bridge style gives full play to the advantages of its compressive property and makes up for the disadvantages of its tensile and flexural properties.
In terms of the mechanical behavior, girder and arch composite bridge is a typical ternary structure which is made up of the live load distribution member, the force transfer member and the main bearing member [1, 2].
Its arch feet are affected not only by the factors we said above but also affected by the three-dimensional effect.

However, stainless steels are still most frequently used metallic materials for internal fracture fixation devices [1 - 3] because of the favourable combination of mechanical properties, acceptable biocompatibility and cost effectiveness compared to other metallic implant materials [1, 2].
HE process a) scheme; b) deformation zone [5] It has frequently been reported, that the nano-metals obtained by SPD, including thosed processed by HE, exhibit improved mechanical properties.
However, the effect of SPD on other physical and chemical properties of processed materials, such as corrosion resistance is less understood [6].
Any heterogeneities, such as inclusions, affect the quality of the passive layer and are possible sites for the initiation of corrosion.
In order to identify the factors responsible for the corrosion resistance of 316LVM, the residual stresses in the as-received and HE material were measured by the XRD method using the Cr Kα radiation and calculated using the widely known sin 2ψ method [13] for the set of planes {211}.

These internal stress fields exert a profound influence on the local stress state experienced by the material under applied cyclic loads, thereby significantly affecting fatigue crack initiation, propagation, and ultimately, the overall fatigue life [11-12].
Its nominal chemical composition, typically comprising approximately 11.5-14.0% Chromium, 3.5-4.5% Nickel, 0.7-1.0% Molybdenum, and a maximum of 0.06% Carbon, contributes to its characteristic martensitic microstructure upon appropriate heat treatment, providing its distinct mechanical properties.
Tensile Mechanical Properties of ASTM A743 Grade CA6NM Steel.
The comprehensive characterization of the ASTM A743 Grade CA6NM martensitic stainless steel's mechanical properties, microstructure, and fatigue behavior under cyclic loading has culminated in the proposition of a novel and highly accurate fatigue failure criterion.
[3] Lee, B., Jung, H.Y.: Factors Affecting on Mechanical Properties of Soft Martensitic Stainless Steel Castings.

The gelatin is a kind of natural polymer with the unique physico-chemical property [3].
The property of no crosslinked gelatin is hard and fragile and its mechanical property is also poor.
The property is beneficial to recycling of the adsorbent after dealing with the dyes wastewater.
The morphology of gelatin microspheres is almost not affected.
When the temperature was 30℃ above, the desorption rate tended to constant and the thermodynamic control was the dominant factor.

Electro-hydraulic proportional flow valve control complex variable pump and research its property for injection machine hydraulic system Lan Li1, a,Xue Fei Zheng1,b Xian Bo Xie1,c 1School of Mechanical Engineering, University of South China, Hengyang 421001, China ; a lljzl@163.com , b 476982905@qq.com, c xianboxie@foxmail.com Keywords:Electro-hydraulic Proportional Flow Valve,Complex Variable Pump, Model, Simulink Simulation Abstract.
According to the pilot valve by the force balance equation and the main valve of the mechanical equilibrium equation,flow continuity equations of pilot valve andand the main valve ,these equations are linearized and Laplace transformed,we gain the mathematical models as follows: (1) (2) In the formulas:is coefficient of flow pilot valve;, is coefficient of the flow- pressure in the pilot valve; is the export pressure of the main pump 1; is the export pressure of valve 2; is the open degree of pilot valve; is the vertical displacement of electro-hydraulic proportional valve; is the open degree electro-hydraulic proportional valve ; is elasticity module of oil volume ; is the volume of main valve top cavity ; is top area of main valve ;is area of pilot valve ; is liquid transfer of liquid resistance1; is liquid transfer of liquid resistance2.
From the simulation ,we realize the performance of electro-hydraulic proportional complex control pump affected by many factors .

Many factors can influence the quality of the micro casting forming, such as casting surface quality, pouring process and so on, the mold material selection and preparation technology is the key factor to obtain high surface quality of castings.
Reaction formula is as follows[5]: MgNH4PO4·6H2O → MgNH4PO4·H2O + 5H2O >160℃； 2(MgNH4PO4·H2O) → Mg2P2O7 + 3H2O + 2NH3 >250℃ So it is clear that phosphoamino group casting material would react and release gas and seriously affect the surface quality of castings.
In this paper, in order to obtain the high quality of castings, the ultrasonic field in gypsum based micro casting solidification process, study the influence rule of the effect of ultrasonic field on gypsum organization, and study the properties of the surface roughness and mechanical of micro casting mold at different sintering temperatures, and determine the optimal components of the mold.
Then test bending strength of the sample using universal mechanical property testing machine.
(3) The strength of the cast material changing trend increases with content of gypsum increases gradually at different sintering temperature.But affected by the form of organization and phase change of the gypsum.