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Specifications and mechanical properties of the pipe is as below (Table 1), 7DE�H����0HF�DQ
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SH� Grade G-105 Modulus of Elasticity E=30×10 6 (psi) Ultimate Tensile Strength σu=125000psi Yield Strength σy=110000psi Poisson's Ratio υ = 0.3 Section Area Body of Pipe A=3.6209 (Sq. in) Solar Sectional Modulus Z=5.144 (Cu.
SCFs due to change in cross section area and stresses due to bending conditions The stress concentration factors due to change in cross section area and axial / bending load is also calculated using an axisymmetric model.
The repeated maximum tensile bending stress in typical S-N curve is then replaced by σad which is called adjusted stress and takes the effect of axial tension due to the weight of the hanging drillstring and also the effects of stress concentration factors due to die-marks.
The fatigue damages of the die-marked drill pipes for different length of drillstring below dogleg, different dogleg severity values and different stress concentration factors are presented in figures 4 to 6.
The stress concentration factors, versus die-mark depth were analytically determined.

Other alternative coolant approaches involve the use of gases as the coolant for enhancing the machinability through the changes in cutting tool/workpiece material properties.
The chemical composition and mechanical properties of stainless tool steel are (C 0.38%, Si .9 %, Mn 0.5%,V 0.3%, and Fe Balance), Hardness 48 HRC and yields strength 1280Mpa respectively.
Surface roughness can be a clue to changing surface integrity that may affect the service life of component.
As hard turning is mostly used as a finishing process it is imperative to study about the parameters affecting the surface integrity and in turn fatigue life of the hard turned.
Cutting temperature is an important factor for evaluation of machinability when turning of hardened stainless steel, high temperatures and high mechanical stresses are created which lead to the early tool wear and reduce the tool life; besides, they increase the forces and tensile residual stresses, affect the surface finish and cause white layer.

As an important index of water quality and ecological factor, water temperature affects almost all kinds of physical, chemical and biochemical properties, and thus indirectly affect the growth and reproduction of the activities of various types of aquatic organisms [1].
Based on extensive research of the relevant information, list a variety of possible utilization ways, utilize screening approaches to analyze these characteristics, the factors to be considered when screening are shown in Table 1.
Thus, the eco-design process of waste heat utilization of nuclear power plant is a continuous revision and improvement process of combination of economic, social and environmental characteristics of specific site area, and the physical and chemical properties of the nuclear power plant thermal discharge, based on the existing use practice, and according to the technical accessibility.
Beall, Jr.: Mechanical Engineering, Vol. 7 (1971), p. 15 [9] Yiying He.
TVA/EPRI Workshop on Factors Affecting Power Plant Waste Heat Utilization, Atlanta. (1978) [19] China Institute of Water Resources and Hydropower and Environmental Office of State Power Corporation.

So labor strength of workers is strong, production period is long, finished product rate is low, the effect factors for quality by workers is bigger.
During the radial rolling, neglect the height change of ring, according to the plasticity constant principle, (1) So the change rule of inside and outside diameters is: (2) (3) In the (1),calculate the derivation of time，get the increasing speed of ring outside diameter, (4) In the(2)，=－/ is decreasing speed of ring wall thickness, the value equals to the feed speed of screw down , (5) Equation (1) – (4) indicate: the preliminary dimensions and feed speed are main factors affecting the increasing movement of ring diameter.
The common mechanical feed in system includes worm feed in, cam feed in and ball screw feed in etc. modes.
Ball screw has high efficiency, high positioning precision, drive reversing, long lift time, good synchronization properties.
Control with high properties ring mill by fully digital AC frequency conversion drive system of Siemens Company.

The experimental results show that the indicating value of diaphragm gas meters under high temperatures is basically accurate, but the metrological property is a little patchy in terms of quality at low temperatures.
The new product standard and pattern evaluation outline of diaphragm gas meters put forward a novel requirement for the metrological property in the limiting temperature conditions [2-3].
Six diaphragm gas meters connect in series with critical flow nozzle (or one mechanical roots flow meter connect in series with five diaphragm gas meters with roots flow meter in the first station).
By testing roots flow meter in both reference conditions and non-reference conditions, we can properly draw a conclusion that the metrological characteristics of roots flow meter are less affected by temperatures, which can be adopted to compare with the nozzle for correction. 2.
But there existed some other factors such as throat diameter and the correction of reynolds number in the non-reference conditions, and both them are about 0.1%.

Variables considered in the testing program include stud and track section properties, stud-to-track connection details, stud orientation and wall layout, and sheathing system properties.
By virtue of their material characteristics and properties, steel studs offer significant advantages over other materials such as wooden studs.
The mechanical interaction of veneer layers and steel studs and how those veneer layers affect the resistance of steel stud walls.
Primary factors in the selection of steel stud wall systems for use in U.S.
Nonetheless, data collected from load tree tests show that the overall response of the system is more greatly affected by the presence of sheathing than by the strength of the sheathing materials used.

Reduction in the thickness of the acetabular liner could possibly affect the load bearing capacity, wear behaviour and contact stresses of the AHJ.
Material property of the femoral head was assumed to be a rigid.
The contact area seems to be the dominant factor in determining the volumetric wear.
The smaller contact area will lead to a small sliding area so that the wear will be smaller for keeping other factors constant.
Harris, A novel method of cross-linking ultra-high-molecular-weight polyethylene to improve wear, reduce oxidation, and retain mechanical properties, J.

Even under heavy traffic loadings the deterioration will likely to accelerate and affect the integrity of the structures.
Although G/CFRP has outstanding properties, e.g. high strength, the usage is mainly restricted to retrofitting of earthquake-prone structures.
Following each shake table experiment the dynamic properties of the system is investigated by performing snap-back tests.
Chouw, N, Mechanical and dynamic properties of coconut fibre reinforced concrete.
Chouw, Dynamic and static properties of flax fibre reinforced polymer tube confined coir fibre reinforced concrete.

Thirdly, tool manufacturing is a factor crucial to microforming processes as it affects the accuracy in shape and movement or control of the forming tools.
Their mechanical properties are listed in Table 1, αh is an inhomogeneity coefficient following statistical distribution shown in Fig. 1 (b).
Mechanical properties of aluminum and tool steel in FEM simulation Materials Density (Mg/m3) Young’s modulus (GPa) Poisson ratio Yield strength (MPa) Tangent modulus(MPa) Al 2.710 69 0.33 138 202×αh Tool Steel 7.8 207 0.292 / / The cylindrical workpiece was less than 2 mm in diameter and the grain size ranged from 25 to 100 μm.
The geometrical parameters a and b are of significance in the CWR process and may determine the final properties of the products.
The initial surface morphologies of workpiece and tool influence friction and deformation, which may affect the final surface topology of micro product to a great extent.

There are changes in material properties of concrete when compared axially loaded short columns with micro-expansive concrete filled steel tube with axially loaded short columns with common reinforced concrete and these changes will inevitably lead to the change of axially loaded short columns with micro-expansive concrete filled steel tube in performance.
Introduction Currently, mechanical properties of common concrete filled steel tube members have been more fully studied[1,2,3,4,5,6], but the research of micro-expansive concrete filled steel tube is not over.
There are changes in material properties of concrete when compared micro-expansive concrete filled steel tube with common reinforced concrete and these changes will inevitably lead to the change of mechanical properties of the specimen.
A tear of the welding seam welded pipe that on the weld seams was the weak link, it directly affects component force performance, and produce the destruction of the phenomenon of the specimen limit bearing capacity is quite low.
The micro-expansive concrete filled steel tube under the same conditions, after mixing with 10% ~ 12% expansive agent, the ultimate damage load value increase around 8%, this plus factor can be properly consider in the actual engineering design.