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GH80A has been widely used in industry for its excellent property under high temperature.
The surface integrity is one of the key factors that determine the lifetime.
Introduction For its superior mechanical properties under high temperature, GH80A has been used widely as key material in aeronautics, gas turbine engines and other high-temperature application [1].
Johnson-Cook model was used in the simulation which was suitable for modeling cases with high strain, strain rate, strain hardening and non-linear material properties [6].
In dry turning of GH80A, the temperature plays a more important role than other factors that affect the residual stress in the surface.

Orthogonal test factor level table L9(33) Level Chemical compositions of the main factors (wt%) A(Al-10Sr) B(RE) C(Al-5Ti-B) 1 0.1 0.1 0.6 2 0.2 0.2 0.8 3 0.3 0.3 1.0 Table 4.
In theory, when the adding beyond the minimum value, mechanical properties of the alloy will be getting better and better.
The stability of the mechanical properties of master alloy was further improved.
Using the weighted evaluation value yg* to evaluate the mechanical properties of the master alloy.
It was showed that Al-5Ti-B had the greatest influence on the mechanical properties, followed was Al-10Sr and then was RE.

Introduction Fiber-to-yarn conversion process has been affected by several factors which include the properties of raw material, level of technology, machinery, and skill of the machine operators.
Fiber length showed a moderate effect, while fiber stiffness revealed the lowest effect on yarn neps count compared to the other two factors [1].
Results and Discussion Based on empirical data that evaluated cotton fiber quality parameters and yarn quality data produced from corresponding cotton fibers, the sensitivity analysis showed that cotton fiber characteristics are the key factors affecting yarn properties.
Effect of Cotton Fiber Strength on Yarn Strength The relationship between the strength of cotton fiber and the tensile strength (B-Force) of the yarn is an important factor in evaluating the quality and physical mechanical properties of the yarn.
These short fibers can easily protrude from the yarn structure, creating hairiness and affecting the quality of the yarn.

These materials have very good hot mechanical properties [25].
The effect of sampling direction on mechanical properties was examined.
Mechanical properties of SpNSR and SpNSP group.
Mechanical properties of Sp BT-FSW and Sp C-FSW specimens.
In addition, the welding parameters (rotational and advance speed), and manufacturing process are major factors in the BT-FSW welding process.

It indicates that the anisotropy of thermo-hydro-mechanical behavior of the argillite rock is the main factor affecting temperature distribution，pore pressure and stress fields.The results make clear that the differences of coupling action and uncoupling action are obvious and the effects of coupling cannot be ignored.
Temperature increment of the nuclear waste stores the storehouse adjacent formation medium, not only shades clinkstone body, water body physical property, but also to moreover infiltrates the flow field to the crag body stress field and the water body have the vital role; At the same time, the ground water takes one kind of environmental factors, has the important influence to the crag body physics mechanical properties and heat transmission.
The ore deposit of the crag stone joint principle surface has the very tremendous influence to leads the water performance influence and rock mechanical properties of mineral chemistry reaction.
Influence nuclear waste dynamics factor and mechanism Consideration from the nuclear waste in-depth geology handles, Thermal, Hydrological and Mechanical are three important constituent in the crag body physics geology environment.
Thermal Hydrological Mechanical Heat flow duo to thermal gradient convection thermal stress Swelling pressure Mechanical Energy conversion Change in permeability Fig 1.

The method was developed considering some specific factors in the construction of mechanical systems and the relationship between system cost and reliability.
Since it is impossible to cover all these factors by allocation methods, some simplifications must be made.
Some of them rely on technical parameters, i.e. on technical and functional requirements plus properties of system elements and components [4, 5], whereas the other group rely on cost optimization models.
On the other hand, the models relying on cost optimization neglect the effects of technical requirements and properties of the system elements, but provide a favorable economic result.
All factors affecting reliability allocation should be studied in detail and particular attention should be given to each of them.

The material of furnace pipe for the HK40 are able to meet the process requirement, but the wall thickness of reformer pipe is too large, affecting the thermal efficiency and the inner diameter is small to limit the catalyst and flow.
So, the microstructure, mechanical properties and life prediction and assessment are done for reformer furnace pipe in radiation section run for 100,000hrs in this paper.
The rupture properties at 900ºC and 50MPa of different sections of reformer pipe are tested, the results are shown in Figure3.
The main components of reformer furnace can be also used for two to three years if other occasional factors are taken into account, value of P can be calculated according to the maximum wall temperature and can be mended occasionally.
The material of furnace pipe for the HK40 are able to meet the process requirement, but the wall thickness of reformer pipe is too large, affecting the thermal efficiency and the inner diameter is small to limit the catalyst and flow.

Thickness and bottle diameter influence of the mechanical properties of PET beer bottles are obtained.
This article is to analyze the thickness of the PET beer bottles and bottle outside diameter of its mechanical properties.
It first analyzes thickness and bottle diameter of the mechanical properties of PET beer bottles.
Conclusion Through the structural analysis of PET beer bottle, that affect the bottle resistance to internal pressure strength of the main structural factors are the thickness of the bottle and the bottle diameter.
The mechanical properties and body diameter of PET beer bottle effects got analyzed.

Effect of autogenous laser weld on microstructure and mechanical properties of Inconel 617 nickel alloy Janusz Adamiec1,a, Robert Kocurek1,b 1 Faculty of Material Science and Metallurgy, Silesian University of Technology, Krasinskiego 8, 40-019 Katowice, Poland a janusz.adamiec@polsl.pl, b robert.kocurek@polsl.pl Keywords: Inconel 617, nickel alloys, laser welding, autogenous weld, microstructure.
In this work the effects of autogenous weld parameters on microstructure and properties of the Inconel 617 alloy were studied.
Nickel alloys, due to their unique mechanical properties at high temperatures, creep strength and oxidation resistance are widely used in the production of elements in the petrochemical, aerospace and power generation industries [5].
Shape factor Ψ for weld penetration no. 4 was 1.05 (Fig. 4a).
Summary Technological autogeonus laser welding test, visual inspection, metallographic examinations and hardness tests allowed to determine the effects of laser welding parameters on microstructure and properties of Inconel 617 nickel alloy.

From the experiments, it could be found that the most important factor affecting the flexural strength is the steel fiber volume fraction, and then the types of steel fiber, the water cement ratio, and the quantity of light aggregate in the order.
Ceramsite, the mechanical properties is shown in Table 1.
Table 1 Ceramsite mechanical properties Grain size(mm) 1h bibulous water 24h bibulous water Bulk density kg/m3 Cylinder pressure strength(MPa) 5~20 1.4% 2.2% 840 8.7 Steel fiber: Three models of steel fiber is shown in Fig. 1, and the performance is shown in Table 2.
For this test, four factors and five kinds of levels (shown in Table 3) is considered, orthogonal test method is adopt, and L25 (56) orthogonal table is used ,25 groups concrete specimens are made.
Table 3 Factors and levels Factors levels 1 2 3 4 5 A Water-cement ratio 0.5 0.45 0.4 0.35 0.3 B Lightweight aggregate content 20% 40% 60% 80% 100% C Steel fiber volume content 0% 0.5% 1.0% 1.5% 2.0% D Steel fiber types JG XB JB JG XB Test Results and analysis Steel fiber combined aggregate concrete flexural failure properties.