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Then, the cumulative usage factor as well as stress intensities at critical locations of the pressurizer are calculated and compared with corresponding allowable design stress limits.
Finally, after categorizing the stress component, stress intensities and cumulative usage factors at critical locations of the pressurizer are calculated through main finite element analyses and compared with corresponding allowable design stress limit.
However, it is well-known that the finite element analysis results can be affected by the element type and mesh pattern.
Fig. 4 shows the resulting cumulative usage factors at representative critical locations such Cuts 1, 4, 5, 14 and 101, which ensure soundness of the modular pressurizer against failure due to fatigue.
I Design stress intensity values, allowable stresses, material properties, and design fatigue curve (1998)

In order to achieve the optimum mechanical properties in AA2024, it is usually necessary to solution heat treat and age the wrought product.
Specimens were also taken along the length of the extrudate to determine the range of properties.
The predicted fraction recrystallised factors at the periphery of the T shape section are shown in table 4.
With FEM simulation, the distribution of the volume fraction recrystallised factors can be predicted and extracted more easily.
Considering these factors, the predicted results can be regarded as in reasonable agreement with the experimental measurement.

Therefore, ignoring the accumulation of PG stockpiles raises environmental concerns regarding the distribution of harmful elements via leachate migration and air, negatively affecting living organisms [4].
It is worth noting that the physical and chemical characteristics of raw PG highly vary depending on the properties of phosphate ore used and the type of production.
It is proposed that the formation of ettringite from sulfate in PG can squeeze the large pore volumes, making the structure denser which positively affects the mechanical properties of the mixture.
Using the proper concentration of this chemical can positively affect the mechanical performance by delaying C3A hydration.
Thus, further research is needed on the use of various types of soil and an analysis of the effectiveness of PG in soil stabilization under the influence of possible external factors such as freeze-thaw cycles.

The workpiece parameters include sheet thickness, initial blank diameter, and material properties.
In the present experimental research, full factorial design of experiments is employed to investigate the CNC multi-pass spinning process parameters affecting the surface roughness and the heights of produced cylindrical spun cups.
Its purpose was to determine the mechanical properties of the blank material: tensile strength Rm, yield strength Rp0.2, ductility A50, plane anisotropy of ductility AA, coefficient of normal anisotropy rs and degree of plane anisotropy Δr.
Mechanical properties and parameters of plane and normal anisotropy of the DC01 material Rm [MPa] Rp0.2 [MPa] A50 [%] AA [%] r rs Δr 0° 320.03 190.65 46.55 0 1.35 +1.26 +0.34 45° 331.90 204.88 43.02 -7.58 1.09 90° 310.12 164.50 43.14 -7.32 1.51 Production of cylindrical spun parts is allied with the blank material anisotropy and can be reflected as the unequal wall height of the spun part in various direction compared to the material rolling direction (0°).
Evolution of Ra surface roughness In order to quantify the effects of the analysed factors and its interactions on the responses H and Ra, the analysis of variance (ANOVA) using Minitab v.17 software was carried out.

Mechanical properties and microstructure are evaluated.
Therefore, GTAW and GMAW-pulse clad weld procedure could give required properties according to clad line pipe standard, reduce cost of production and increase productivity compared to the peel back method.
The weld soundness, microstructure and mechanical properties were investigated.
Heat input is one of the major factors that can cause solidification cracks in nickel base weld metal thus a low heat input welding procedure must be considered necessary for clad joining.
Mannan, Microstructure and mechanical properties of Inconel 625 supperalloy, Journal of Nuclear material 288 (2001) pp. 222-232 [11] Dong Jin Lee, Youn Soo Kim, Yong Taek Shin, Contribution of Precipitate on Migrated Grain Boundaries to Ductility-Dip Cracking in Alloy 625 Weld Joints, KIM and Springer, Vol. 16, No. 5 (2010). pp. 813-817 [12] I.L.W.

Recently most studies pay attention to 3D simulation and how factors (such as injection pressure, structure of preform and so on) work.
Visualization experiment only used for research about some particular situation or consider several factors.
Conclusions In summary, the main factors that force the emergence of void is resin viscosity, structure and properties of enhanced fabric, porosity, mold surface quality, temperature and injection pressure.
Mechanical properties of composite structures fabricated with the vacuum induced preform relaxation process [J].
An indirect method based on fretting tests to characterize the elastic properties of materials: Application to an epoxy resin RTM6 under variable temperature conditions [J].

Introduction Poly(phenylene sulfide) (PPS) is an engineering thermoplastic polymer, which has started to gather several industries’ attention due to its thermal stability, maintaining high mechanical properties at temperatures up to the order of 200 [ºC].
Due, especially, to its great mechanical properties, it is often compounded with carbon fibers to improve its behavior.
The input factors to be studied are the load, sliding speed and the amount of HGM suspended in the oil.
The proposed model is linear, with 3 levels for each factor, being: Table 1.
· Application of this method to other materials, specially those which have lower tribological properties; lower working temperatures can mean better embedding of HGM into the surface.

The majority of the available methods to model the radiative heat flux are based on prescriptive values of the surface thermal properties of the participating medium, which do not take into account the specific geometry of the system and the effective values of the thermal properties of the participating medium.
The prescriptive method assumes that the terminal properties of the participating medium are independent of the temperature and the wavelength of the electromagnetic radiation.
The evaluation of the thermal properties of the fame involves the influence of soot, which may enhance on a quantitative scale the radiative heat flux up to 42 [%].
The emissivity coefficient of the gaseous environment is set by summing the emissivity coefficients of the combustion gases, multiplied by correction factors of the partial pressures and the band overlapping of the emitting spectrum, presented in Eq. 12. [4] εg≈εH2O+12∙εCO2
Radiative properties of soot particles. [4] Fuel type Chemical composition κs [1⁄m] fv×10-6 Ts [K] Obs.

On the other hand, the corrosion of the steel plates as a result of exposure to external factors may be considered a problem that affects the permanence of the structures.
Though, construction of these jackets is not developed to affect the general behavior but to change some mechanical properties of the concrete to strengthening and repair the occurred damages.
The Iraqi Standard specification No. 45/1984 [36] used to confirm the chemical and physical properties of materials.
Table 2: Properties of the analyzed columns.
Xie, Effect of SCM and nano-particles on static and dynamic mechanical properties of UHPC, Constr.

The reaction to earthquake is affected not only by the relevant dynamic characteristics of tue structure itself but also by the input seismic wave spectral components and other factors.
So deep analysis on the characteristic of the spectrum response can provide a lot of instructive information to the study on the mechanical response from the earthquake, failure mechanism, optimal design and so on.
Based on the jumping phenomenon of the frequency distribution, the paper holds that the natural frequency of single-layer shell focuses on three areas and rise-span ratio is the main factor affecting the structural frequency change; Reference 3 analyzed the parameters about the free vibration characteristics and did the computational research on the dynamic response, which concludes that the latticed shell structure has good seismic behavior when the rise-span ratio is somewhere between 1/3-1/4.
This paper discusses how the changes affect the distribution of natural vibration frequency in roofing gravity load, rise-span ratio, thickness, initial defect structure and other factors as follows:(1).Along with roofing gravity load increasing, the overall frequency distribution drops (Figure 1) and reflects two features: the falling amplitude of the frequency declines; for a given load increment , the falling amplitude of high order frequency is greater than the low; moreover, the structure frequency of small gravity load is relatively discrete.(2).
Spatial Structures, 4(2005) ,p.36—39.China [4] TIAN Bei-ping; MAO Wen-jun.Analysis of dynamic properties for cable-stayed latticed shell structure.