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The uniformity of STD affects the performance such as mechanical property, microstructure of rolled workpiece greatly.
Especially the inhomogeneous STD will cause defects in internal organization which may decrease the mechanical property of rolled workpiece.
The influence factors of mechanical parameters The decrease of the drive roll’s rotational velocity and the increase of the feed speed will increase the rolling force and force moment of the main roll.
In other words, any factors which make the rolling process of the model stable will ameliorate the uniformity of SD.
In the eyes of mechanical properties of the rolled workpiece, good strain uniformity is beneficial and necessary.

The relative slip and shear force on the interface of steel and GFRP deck composite beam appears to a certainty with the external loading, which induced internal force redistribution between GFRP deck and steel beam and shear connector, especially GFRP is a resin material, its physical and mechanical properties will change with temperature and time.
Temperature and creep is the most important factor to affecting their work performance because GFRP deck is composite materials which is made of fiber and epoxy resin .
According to the mechanical properties of steel and GFRP deck composite beam, the assumptions are summarized as below: (1) The same cross-section steel and GFRP deck have the same curvature and consistent with the plane section assumption; (2) Shear connectors is in elastic working conditions;(3) The level of shear and slip of steel and GFRP deck is proportional.
The effect of load and temperature on interfacial shear force is relatively large, whereas the connection stiffness and creep affect on GFRP is relatively small
Evalution of effective width and distribution factors for GFRP bridge decks supported on steel girders[D],University of Pittsburgh, 2005 [5] Wang Lian-guang.

And boiler superheater tube is one of the important reasons for boiler failure, which affects the safe and stable operation of power generation equipment.
And thermal physics and mechanical properties of the boiler superheater tube were taken full consideration.
In these topics, the research of reliability and security in boiler operation is more important issue, which affects directly the development of coal-fired power generation technology and its application in business as a mature technology .
As the power industry in china is growing into large power plants and large power grids stage, the over-temperature burst and leakage in upper furnace superheater is a growing problem with the increasing boiler capacity, which caused unplanned outages of about 20% of the total running time and is an important factor of affecting the power plant safety.
The attribute of material in this paper is chosen, which is listed in Table 4, and the superheater analysis model and its meshing chart are individually shown in Fig.3 and Fig.4 Table3 Parameters of data analysis used Rear superheater tube outer diameter (mm) 54 Rear superheater tube inner diameter (mm) 47.6 Rear superheater tube wall thickness (mm) 6.4 Analysis and selection of material height (mm) 100 Table 4 Material Properties of 12Cr1MoV Temperature[°C] 100 300 580 Elastic modulus [Mpa] 2.11e5 1.95e5 1.56e5 Poisson's ratio 0.3 0.3 0.3 Thermal expansion coefficient 1.303e-5 1.355e-5 1.43e-5 Figure. 2 Analysis model Figure. 3 Meshing chart 4 Conclusions Superheater is an important part of steam boiler.

The results show the key factors that affect the result of these assessment methods.
Key factors, which affect the result of the flaw assessment, have been studied.
In this part, the key factors which affect the analysis results of API 1104 and BS7910 have been extensively studied.
So it could be conservative for using the tensile properties of parent steel as that of welds.
BS7910 level1 and API1104 level 2 show lower conservative, but need more dates and material properties.

The run-out speed and requirement linked to surface or micro structure are the productivity limiting factors.
Alloy developments with strong focus on extrudability and mechanical properties have been done at Raufoss [1, 2] through many years in cooperation with SINTEF and NTNU, [3].
In table 2 mechanical properties of the alloys are listed.
Table 2: Minimum mechanical properties of extrusions, from European Norm, aluminium and aluminium alloys, extruded rod/bar tube and profile, no. 755.
Reiso, Extrudability and Mechanical Properties of some 7XXX – series Alloys, Conference Proceedings of ET 96 (1996)

There are various parametric studies carried out to show the changes in the design parameters will affect the mechanical properties of the honeycomb sandwich composites.
There is lack of information regarding the rubber wood honeycomb core in terms of the mechanical properties.
Besides having adhesive to form the fillet, the quality of the fillet was also part of the factors that affect the mechanical properties in the sandwich composites.
Sharina, Effects of core grain orientation on the mechanical properties of wood sandwich composite, J.
Xu, Investigation on mechanical properties and equivalent model of aluminum honeycomb sandwich panels, J.

(a) Schematic diagram of the FSW process, (b) The cross-section of welded joint: a-Base metal, b-Heat affected zone (HAZ), c-Thermo-mechanically affected zone, d-Weld nugget In 2011, Rajakumar et al. conducted a study investigating the impact of various factors and equipment utilized in the welding process on the tensile strength of friction stir welded AA7075-T6 aluminum alloy [5].
The impact of heat treatment on the microstructural morphology and mechanical properties of friction stir welded aluminum alloy has also been demonstrated through studies conducted by Singh [7], Pankade [8], Maji[9].
This study aims to elucidate the heat treatment technique employed for 7075 aluminum welds, focusing on investigating alterations in microstructure and mechanical properties subsequent to heat treatment.
The microstructure and mechanical properties of these regions exhibit different differences as a consequence of the welding process.
The base metal retains its initial microstructure and mechanical properties, and is not subjected to the high temperatures and deformations experienced in the HAZ.

The friction between the crack surface is very significant and it becomes the main influence factor of mechanical energy gradually[2].
Due to the interface crack is easily produced in joint with different properties of two materials, so the bi-material-interfacial cracks are the one of the key research of fracture theory.
Crack surface friction contact mechanics model The mechanical model of crack surface friction.
The mechanical model of crack surface friction is shown in Fig.2.
The a/w is 0.4-0.8[9,10] and the material property: E1=66.5 MPa, μ1=0.31, E2=206 MPa, μ2=0.3.

These features, combined with the high strength properties and fracture toughness, provide better properties to this family of steels, as compared to high-resistance carbon steels [5].
The reverted austenite formed in the interdendritic areas is not hardened by aging due to its stability and would require a subsequent heat treatment (annealing) to try to recover the mechanical properties of this region [14,15].
Hashimoto, Effects of Intercritical and Isothermal Treatment on Mechanical Properties and Microstructure of Steel 300M, Journal of Vacuum Applications, Bauru - SP, v. 25, nº 2, (2006) 93-97
Effects of austenite reversion during overageing on the mechanical properties of 18 Ni (350) Maraging steel.
Sitarama, Influence of post-weld heat treatments on microstructure and mechanical properties of gas tungsten arc Maraging steel weldments.

There are several interesting advantages of MMCs like possessing homogeneous mechanical properties, economical in cost and feasible processing techniques when compared to that of conventional engineering materials.
The front runner of the aforementioned factors deciding the physical, chemical and mechanical properties of the proceeds composite material is the volume/weight fraction of the particulate reinforcement.
The SEM analysis and the error profile analysis predict the presence of porosity in the composite affecting the mass calculations.
[5] Mohammad Azadi, Mohammad Zomorodipour, Abdoulhossein Fereidoon, Sensitivity analysis of mechanical properties and ductile/brittle behaviors in aluminum‐silicon alloy to loading rate and nano‐particles, considering interaction effects, Engineering Reports, 2020
Geometric factors affecting the internal stress distribution and high temperature creep rate of discontinuous fiber reinforced metals.