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Doping Effects of Metals on Electrical Conductivity of TiO2 from First-Principles Calculations Hu Sun1,2,a, Zhutian Xu1,2,b,* and Di Zhang1,2,c 1Shanghai Key Laboratory of Digital Manufacture for Thin-walled Structures, Shanghai Jiao Tong University, Shanghai 200240, People’s Republic of China 2State Key Laboratory of Mechanical System and Vibration, Shanghai Jiao Tong University, Shanghai 200240, People’s Republic of China asun.h.20200904@sjtu.edu.cn, bzhutianxu@sjtu.edu.cn, czhangdi2015@sjtu.edu.cn Keywords: Proton exchange membrane fuel cell; TiO2; Electrical conductivity; First-principles Abstract.
To enhance the electrical conductivity, the electronic transport properties of multiple-titanium alloys doped with precious metal (such as Au, Pt, and Pd), niobium and zinc are investigated.
The conductivity is mainly affected by the metal-induced intermediate bands (IBs).
The relaxation time of the Sb-doped increases from 6.15×10-14 s to 1.40×10-13 s, which is also an important factor for conductivity increasing.

PCBN tools retain their properties at elevated cutting temperatures, without compromising the overall quality of the workpiece.
Machining with these tools has proven to be an equal or even better alternative to rival conventional and unconventional finishing processes, in terms of the characteristics of the surface and the subsurface of the finished part, which greatly affect its life cycle [1-3].
This factor is of particular interest as it decisively determines component behaviour.
AdvantEdge is a Lagrangian, explicit, dynamic code which can perform coupled thermo-mechanical transient analysis.
Chunzheng, On adiabatic shear localized fracture during serrated chip evolution in high speed machining of hardened AISI 1045 steel, International Journal of Mechanical Sciences 75 (2013) 288–298

., Jeonju, Korea 2 Corresponding Author, Automobile Hi-Technology Research Institute, Faculty of Mechanical & Aerospace System Eng., Chonbuk Nat'l Univ., Jeonju, Korea a vuconghoa@hcmut.edu.vn, b seodw@chonbuk.ac.kr, cjklim@chonbuk.ac.kr Keywords: Ductile fracture criteria, Void growth and coalescence, Cold workability, Finite element calculations Abstract.
Therefore, the predictions of voids growth are particularly important for the micro-mechanical understanding of ductile fracture.
The mechanical interaction between the contact surfaces is assumed to be non-intermittent, rough frictional contact.
The difference of these functions is the coefficients in which include properties of materials.
This spherical void model can be under affected by triaxiality stress state.

However, building energy efficiency is not only relevant to architectural and physical properties of building, such as thermal mass, structural material, and its shape, but also local climate [1].
This will make the insulation properties of insulation materials worse and even failure.
For interior thermal insulation wall, because its insulation layer is located in the interior, its insulation layer will not be affected by the wind pressure.
To ensure good thermal insulation properties, weather resistance, durability and resistance to impact, the exterior thermal insulation system are more demanding in the raw materials (e.g., the demand for alkali glass fiber mesh cloth, the crack resistance requirements of the mortar, etc.) and the construction technology than the interior thermal insulation system.
For the upward factor, interior thermal insulation system is more suitable in south China.

International Journal of Mechanical Sciences, 2010, 52(7): 804-818. ].
Springback can introduce some dimensional errors to the stamped part, which can affect the precision and quality of the subsequent assembly.
International Journal of Mechanical Sciences, 2013, 77: 57-64
International Journal of Mechanical Sciences, 2003, 45(11): 1687-1702. ].
Validation and Application of the Elastic Modulus Model Material Property.

The Stress and Strain Analysis in the Broadening Stage of Multi-wedge Synchrostep Rolling Railway Axle by Cross-wedge Rolling Xuedao Shu1,a , Min Xiao 1, Chuanmin Li2 and Zhenghuan Hu2 1College of Mechanical Engineering and Mechanics, Ningbo University, China, 315211 2College of Mechanical Engineering, University of Science and Technology Beijing, China, 100083 ashuxuedao@nbu.edu.cn Keywords: Multi-wedge, Synchrostep, Cross-wedge Rolling, Railway axle, Stress and strain Abstract.
According to the references [6], to the any wedge: (2) (3) (4) (5) (6) From Eq.(2) to Eq.(6)： Here a is the forming angle, b is the spreading angle, m is the number of the rollers, r and d is the radius and diameter of the rolled-piece separately, R and D is the radius and diameter of the roller separately, dk is the roller diameter, k is the instant spread factor of the rolled-piece.
The following are the mechanical properties of materials in calculate: The elastic modulus of roll is E=210GPa, the Poisson ratio is v=0.3, the density is ρ＝7.82×103Kg/m3.
The strain distribution which showed in Fig. 4 indicates that non-rolled metal between the wedges hardly with any strain, so the strain in the thin areas rolled by three wedges was not affected during the broadening process.

Because of the vanishing moment property of the wavelet (with sufficiently large n such that n≥α), the CWT focuses only on a singular part of a function.
This is because the curvature of the mode shape at different locations affects the local singularity behavior as the analysis is carried out in a finite-dimensional space of (u, s).
Fig. 4 The estimates of the Holder exponent for different values of m with n=0.25 (L=1.2m, b=0.02m, h=0.02m, E=70GPa, ρ=2700kg/m3, clamped-clamped beam) The order of the mode is another factor we address in this work.
Kutz (Ed.), Mechanical Engineers Handbook, Wiley, New York, (1998) [3] Maosen Cao, Pizhong Qiao: Smart Mater.
Sohn: Mechanical Systems and Signal Processing, vol.17 (2003), p 1163 [9] Z.K.

Bae 2,c 1 School of Mechanical Engineering, Pusan National University, Busan 609-735, Korea 2 Graduate School of Mechanical and Precision Engineering, Pusan National University, Busan 609-735, Korea a cgkang@pusan.ac.kr, bpkseo92@empal.com, cjwbae@pusan.ac.kr Keywords: Rheology material, Solid fraction, Two-phase flow, Rheology die casting, Rheology compression test Abstract.
The most important factor in the high fraction range is the relationship formulation between the stress and the strain considering the grain size and the deformation of the solid particles with the globular microstructure [3, 4].
Because the flow stress formulation of rheology materials is affected by the solid fraction, the strain, the strain rate and the temperature, etc., it should be represented as a function of their parameters.
The assumption to discretize the governing equation is as follows, the flow model is two-dimensional and the thermo mechanical properties of rheology material with incompressible laminar flow, except for the viscosity, are constant

Introduction Polycarbonate aging can cause not only appearance, physical properties, mechanical properties, electrical properties of polycarbonate degradation failure, and the produced bisphenol A which is a kind of endocrine disruptors can disrupte endocrine, affect the healthy development of embryos and have an impact on infant development and immunity, cause sexual precocious, even carcinogenic [1].
Since oxygen mainly affects the surface of the polymer, the degradation of the polymer is mainly in the initial stage of degradation.
Under the high temperature thermal stability properties of polycarbonate.
So under the conditions of no other factors, the high temperature will cause the degradation of polycarbonate molecular chain rupture.

The thermo-mechanical reaction during machining plays an important role in defining machinability of titanium alloys.
The scientific community is concerned about machining of titanium alloy due to problems occurring in the shear zone that affect tool life.
Titanium is considered to be a super alloy because of its unique properties such has high strength to weight ratio, good resistance to corrosive environments and high load bearing capacity [2].
While capturing, a ruler is placed near to tool holder to determine the scale factor in order to calculate the length and angle of regular geometric projections in the image.