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Zhang1 1National Engineering Research Center for High Efficiency Grinding, Hunan University, Changsha, China, 410082 2College of Mechanical & Engineering, Xiangtan University, Xiangtan, China, 411105 aedeng0080@vip.sina.com,bpzpalass@163.com,cmeishanzi@sina.com Keywords: PDC cutter, Interrupted cutting, Temperature field, Finite element method Abstract.
According to machining properties of materials and working conditions, on the basis of the theory of thermal equilibrium of moving thermal source, the paper established the mathematical model of temperature field of interrupted cutting used the PDC cutter through reasonable hypothesis.
Introduction Cutting temperature is an important physical index in cutting process, and is an important factor that affects the wear and life of cutters, surface integrity and processing quality of products.
Thus, the cutting heat only affect the temperature rise of materials near the surface, and the temperature varied wildly along the normal direction of the grinding surface.
Sun and et al: China Mechanical Engineering, Vol. 13 (2002), p. 1608.

Introduction Phenol is considered as priority pollutants since they are harmful to organisms at low concentrations due to their toxicity and carcinogenicity properties.
Phenol is considered as priority pollutants since they are harmful to organisms at low concentrations [3, 4] due to their toxicity and carcinogenicity properties.
Fig. 1 The isothermal adsorption curve of SM toward phenol The Adsorption Thermodynamic Properties of SM toward Phenol.
The properties of adsorption force were reflected directly by thermodynamic parameters adsorption enthalpy.
And the adsorption enthalpy was the result of these factors, the value of ΔH depended on the competition results of total exothermic effect and total endothermic effect.

High Performance Concrete with High volume Fly Ash Jian-Hua Wu 1, a, Xing-Cheng Pu, Fang Liu, Chong Wang 1 College of Material Science and Engineering, Chongqing University China awujianh@263.net Keywords: Concrete using of large dosage fly ash; High Properties Concrete; Pozzolanic activity; active factor; carbonate Abstract.
and Mechanical Properties of Cement Flexural strength (Mpa) Compress strength (Mpa) Density g/cm 3 Specific surface cm 3/g Fineness (0.08mm Sieve) Sieve residue /% 3day 7day 28day 3day 7day 28day Cement 3.18 3500 1.9 5.90 8.40 8.94 33.1 46.2 56.4 Coarse and fine aggregate: Fine aggregate comes from Jianyang, Sichuan Province with fineness modulus of 2.18 and density 2.78 g/cm3 Coarse aggregate: Crushed limestone from Geleshan, Chongqing is used with the grading of 5~10 mm and 10~20 mm, 30 % and 70 % respectively.
The strength is a main factor for concrete to resist all kinds of destroying force.
But for fly ash concrete, the increasing of compressive strength is the result of combination of all kinds of factors; it accelerates the increasing of strength of the fly ash concrete.
[7] L.Pliskin: High Performance Concretes Engineering Properties and Code Aspects, High Performance Concrete-from Material to Structure, 1992, E&FN SPON 186.

The maximum radial concave deformation is 72.0mm about the three-canvas, the distance is 147mm between the feedback source and three-canvas, and there is 75mm gap, so the three-canvas can’t contact with the feedback source, and it also can’t affect electrical property, the system is safe.
The maximum stress is 128Mpa in the forward, the safety factor is 220/128=1.72, so there is no breaking.
The force of the canvas overlay is: (5) (C——wind factor q——wind pressure S——windward area) So similarly received that the force of unit length around the canvas overlay is 1417N, the safe factor is 34.1, the canvas overlay is safe absolutely in using.
The analysis showed that the minimum factor of safety of the antenna is 5.1 in which the working wind-speed is 110km/h ensure accuracy, the reflector surface accuracy is 0.5147mm, the clearance between feedback source and canvas overlap is 75mm, and they can’t compact the electrical properties, so the system is safe.
The test showed that the antenna structure is no apparent deformation or damage in the ensure accuracy, the minimum reflector surface accuracy is 0.474mm, there is 68mm safe distance between feedback source and canvas overlap, and they can’t compact the electrical properties, so the system is safe.

For controlling the functionality of the material and to prevent defects, information about the cation diffusivity, which controls most of the glass properties, are highly desirable.
The temperature dependence of the alkaline-earth diffusion with the corresponding activation energies and pre-exponential factors are given in Refs. [1, 3, 7].
As a consequence, the activation energy is mainly affected by Coulomb interactions.
Pre-exponential factor.
Hence the probability of successful barium diffusion jumps that affects the pre-exponential factor D0 increases with higher alkali concentration.

That is because heating above the BTT at the finishing steps of heat- and thermomechanical- treatments leads to strong grain growth, followed by mechanical properties degradation.
Thus, there is a demand for a BTT determination technique based on physical properties measurement.
There are many factors affecting the experimental results of DSC investigations: the temperature regime of an experiment (heating/cooling rates, exposure time) and the controlled atmosphere in the DSC-cell during an experiment.
To perform an accurate determination of any critical points by means of the DSC method, the values of all the factors should be carefully analyzed and selected.
To limit the number of factors affecting the DSC results, all the chosen alloys were characterized by a value of aluminum equivalent from 8.5 to 10.5.

Superior mechanical and durability properties of RPC are achieved by appropriate mixture design and curing conditions [4, 5].
Thus, it is possible to suggest that aggregate blend where β value results in the highest packing degree will results in the RPC mixtures with highest strength if other mixtures design factors are held constant.
Aggregates classification based in the sieve analysis test results, and their properties determined as required by ASTM C128 and ASTM C29 are provided in Table 3 [16, 17].
Properties of sand blends required for concrete mixture design (MC, AC and specific gravity) were calculated from properties of sand fractions given in Table 4.
Influence of ultrafine 2CaO· SiO2 powder on hydration properties of reactive powder concrete.

The precise material properties of the composite liner is commercially sensitive information and therefore are not included here.
Table 1 Mechanical properties for the outer race material Carbon Manganese Steel Mechanical Properties Property Symbol Value 0.2% Proof Stress σy 0.518 [GPa] Poisson’s Ratio ν 0.29 Young’s Modulus E 186 [GPa] Strength Coefficient K 1.394 [GPa] Strain-hardening Exponent n 0.33 Brinell Hardness HB 201-255 In this cold-forming process [1,2] the outer race is nosed on each side whereby it is placed, together with the inner race and composite liner, in between two identical spherical dies (Fig. 2-a).
Incorrect pressure, displacement (shut height of the machine press), number of cycles (i.e. the number of consecutive times the press will lower), machine specifications and pre-form design are just a few contributing factors.
The type of part and mesh properties are detailed in Table 2.
Materials Uni-axial compression tests have been performed to characterise the mechanical properties of the carbon manganese steel, of which the outer race is manufactured, and these properties have been input to the FE model created using Abaqus.

Optimized tool design represents a key factor for such processes, leading to long tool life and hence to low tooling costs.
The results show that the interface properties of the composite are of high quality and the material has a lower vulnerability to cracks after use in production than the conventional tool, respectively material.
Here the manufacturing line often starts with shearing of bar stock material and hot-metal forming processes because of the excellent resulting material properties, the high material utilization and high output rates.
Also a heat affected zone near the welded material is present. 15 mm 40 mm Fig. 2.
Hamiuddin, Correction between mechanical properties and porosity of sintered iron and steels, Powder Metall.

Table 5 represents the properties of uni-directional composite of continuous S-Glass Fiber/Epoxy plies with 60% Fiber Volume Ratio [1] and Table 6 shows Tsai-Wu failure criterion parameter used for selection of safe design.
Table 5 Material input parameter Material Properties ρ [g/cm 3] E1 [GPa] E2 [GPa] G12 [GPa] G23 [GPa] ν12 Value 2.1 55 16 7.6 5 0.28 Following properties for the above selected material were used for the Tsai-Wu failure criterion.
Table 6 Properties for Tsai-Wu failure criterion Material Properties ��1�� [MPa] ��1�� [MPa] ��2�� [MPa] ��2�� [MPa] ��12�� [MPa] Value 1620 690 40 140 60 c.
Wind angle variation over dome The above properties were used to model a transversely isotropic composite in a commercial package ANSYS.
The shell was modeled as a symmetric, balanced angle ply laminate with the average laminate properties (average of both positive and negative angled plies) for each layer.