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Online since: March 2011
Authors: Zhao Qiang Zhang, Zhong Guo Yang
Based on this, this paper will take cement concrete pavement as studying object, proceeding with the analysis of the factors which affect the concrete pavement structure.
As we all know, the pavement structure design should come down to the values of a lot of parameter and the choice of mechanical model.
Therefore, the external condition is also uncertain; second, the design theory and mechanical model has deviation with the actual use conditions.
The second chapter analysis of this paper shows: the generalized resistance of cement concrete pavement is connected with the pavement layer generalized geometric properties and material properties and failure criteria.
The pavement geometric properties and material properties are randomness, while the defined criteria of concrete pavement failure has fuzziness, so the generalized resistance of concrete pavement structure has both randomness and fuzziness; The cement concrete pavement generalized load effect has fuzziness randomness too.
As we all know, the pavement structure design should come down to the values of a lot of parameter and the choice of mechanical model.
Therefore, the external condition is also uncertain; second, the design theory and mechanical model has deviation with the actual use conditions.
The second chapter analysis of this paper shows: the generalized resistance of cement concrete pavement is connected with the pavement layer generalized geometric properties and material properties and failure criteria.
The pavement geometric properties and material properties are randomness, while the defined criteria of concrete pavement failure has fuzziness, so the generalized resistance of concrete pavement structure has both randomness and fuzziness; The cement concrete pavement generalized load effect has fuzziness randomness too.
A Visualized Investigation of Void Growth and Coalescence in Pure Copper Sheets under Impact Tension
Online since: August 2011
Authors: Da Nian Chen, Shan Xing Wu, Dong Fang Ma, Gao Tao Deng, Huan Ran Wang
The main effects affecting dynamic growth and coalescence of voids were presented including the geometry (void size, shape, orientation, spacing), the material properties (dynamic constitutive model) and the stress state (impact tension condition).
The main effects affecting dynamic growth and coalescence of voids were considered including the geometrical configuration of void cluster, the material properties (dynamic constitutive model) and the stress state (impact tension condition).
However, void coalescence will occur when the intervoid ligament undergoes a localized mechanical instability that rapidly thins it out.
Fig. 1 Schematic diagram of a tensile split Hopkinson bar The geometrical configuration of void cluster (size, shape, orientation, spacing), the properties of material between voids (dynamic constitutive model) and the stress state (impact tension condition) are the main parameters affecting dynamic evolution of voids.
dynamic growth and coalescence of void were presented including the geometry (void size, shape, orientation, spacing), the material properties (dynamic constitutive model) and the stress state (impact tension condition).
The main effects affecting dynamic growth and coalescence of voids were considered including the geometrical configuration of void cluster, the material properties (dynamic constitutive model) and the stress state (impact tension condition).
However, void coalescence will occur when the intervoid ligament undergoes a localized mechanical instability that rapidly thins it out.
Fig. 1 Schematic diagram of a tensile split Hopkinson bar The geometrical configuration of void cluster (size, shape, orientation, spacing), the properties of material between voids (dynamic constitutive model) and the stress state (impact tension condition) are the main parameters affecting dynamic evolution of voids.
dynamic growth and coalescence of void were presented including the geometry (void size, shape, orientation, spacing), the material properties (dynamic constitutive model) and the stress state (impact tension condition).
Online since: September 2016
Authors: Gobwute Rujijanagul, Tawee Tunkasiri, Denis Russell Sweatman, Pharatree Jaita, Chatchai Kruea-In, Ratabongkot Sanjoom
Furthermore, many authors have reported that nanocomposites show many interesting properties as compared to ordinary composites, such as high mechanical properties (e.g.
It has been reported that the electrical properties of many electroceramics affect by many factors, such as dopants and fabrication technique.
LCR meter (Agilent E4980A) was used to measure for the electrical properties.
In some cases for ceramic – metal interface, the Schottky barrier was found to depend on many factors such as the type of electrode and the ceramic treatment.
However, other factors that effect to the electrical properties of the ceramics should be clarify for further work such as processing parameter for forming electrode.
It has been reported that the electrical properties of many electroceramics affect by many factors, such as dopants and fabrication technique.
LCR meter (Agilent E4980A) was used to measure for the electrical properties.
In some cases for ceramic – metal interface, the Schottky barrier was found to depend on many factors such as the type of electrode and the ceramic treatment.
However, other factors that effect to the electrical properties of the ceramics should be clarify for further work such as processing parameter for forming electrode.
Online since: November 2025
Authors: János Lukács, Judit Kovács
As different parts of the welded joint are subjected to different heat exposure, the different parts of the heat affected zone have different properties.
The thickness, the mechanical properties and the chemical compositions of the base materials are summarized in Table 1 and Table 2.
Thickness and mechanical properties.
Hu, Mechanical properties of high strength steels and weld metals at arctic low temperatures, Thin-walled structures, 185, 110543 (2023) [7] M.
Enzinger, Mechanical and microstructural properties of S1100 UHSS welds obtained by EBW and MAG welding, Welding in the World, 66 (2022) 1199-1211
The thickness, the mechanical properties and the chemical compositions of the base materials are summarized in Table 1 and Table 2.
Thickness and mechanical properties.
Hu, Mechanical properties of high strength steels and weld metals at arctic low temperatures, Thin-walled structures, 185, 110543 (2023) [7] M.
Enzinger, Mechanical and microstructural properties of S1100 UHSS welds obtained by EBW and MAG welding, Welding in the World, 66 (2022) 1199-1211
Online since: July 2011
Authors: Hai Lian Gui, Yu Gui Li, Fei Fan, Quan Ye
The Factors to Influence the Shearing Quality
The factors which influenced the shearing section are very so many.
With the temperature changes, the stress properties of material also change.
The mechanical property of material in shearing section would be changed when the temperature increased to the extent [5].
When the shear blade gap reduced to certain degree, shear section quality goes bad. this is because the fracture cracks can be met in a straight line when blade clearance is appropriate, Conclusion The factor affects the quality of shearing section is so many, only considering one or two factors is impossible to change the quality of section.
In the shearing process, we must fully consider the comprehensive effect of shearing speed, shear temperature, shear blade clearance and the properties of materials.
With the temperature changes, the stress properties of material also change.
The mechanical property of material in shearing section would be changed when the temperature increased to the extent [5].
When the shear blade gap reduced to certain degree, shear section quality goes bad. this is because the fracture cracks can be met in a straight line when blade clearance is appropriate, Conclusion The factor affects the quality of shearing section is so many, only considering one or two factors is impossible to change the quality of section.
In the shearing process, we must fully consider the comprehensive effect of shearing speed, shear temperature, shear blade clearance and the properties of materials.
Online since: August 2014
Authors: You Min Huang, Yi Syun Wu, Shung Ping Wang
Table 2 lists different factors for the CFD analysis.
It shows that these factors do not significantly affect the pressure distribution.
Its mechanical properties were determined by tensile tests and are listed in Table 3.
Table 4 lists the material properties of the rubber.
Table 4 The mechanical properties of the rubber pad Hardness shore A M-R constant C10 (MPa) M-R constant C01 (MPa) Poisson’s ratio (n) Polyurethane rubber 55 0.382 0.096 0.4999 The finite element mesh.
It shows that these factors do not significantly affect the pressure distribution.
Its mechanical properties were determined by tensile tests and are listed in Table 3.
Table 4 lists the material properties of the rubber.
Table 4 The mechanical properties of the rubber pad Hardness shore A M-R constant C10 (MPa) M-R constant C01 (MPa) Poisson’s ratio (n) Polyurethane rubber 55 0.382 0.096 0.4999 The finite element mesh.
Online since: September 2014
Authors: Guo Sun, Yuan Gui Sun
The ability of current materials to withstand these conditions remains a limiting factor and the active-cooling thermal protection system (TPS) is necessary in the combustion chamber.
The structure sustains both mechanical and thermal loads by integrating load-bearing with coolant passages.
The 2-D Finite elements mesh used for calculations is shown in Fig.2, the geometry parameters for FE calculations are listed in Tab.1,the Ni-based alloy Inc X-750 properties are listed in tab.2.
Properties of Inc X-750.
For the given structure weight, some design parameters affecting the thermal-mechanical stress has been studied by altering the model geometric dimensions.
The structure sustains both mechanical and thermal loads by integrating load-bearing with coolant passages.
The 2-D Finite elements mesh used for calculations is shown in Fig.2, the geometry parameters for FE calculations are listed in Tab.1,the Ni-based alloy Inc X-750 properties are listed in tab.2.
Properties of Inc X-750.
For the given structure weight, some design parameters affecting the thermal-mechanical stress has been studied by altering the model geometric dimensions.
Online since: July 2014
Authors: M. Jayaraj, Arjunan Siddharthan
Surface coating improves the following factors such as wear resistance, corrosion resistance and appearance of the material through proper selection by the application of organic, inorganic or metallic coating on its surface.
EN coatings provide material properties that expand the physical properties beyond those of pure nickel coating systems.
Table 1 Hardness of EN and EN-Nylon composite coatings S.No Sample H.V0.05 1 AISI 1045 135±5 2 EN 758±6 3 EN-Nylon 675±5.5 Roughness is very important one factor affecting the corrosion.
[6 ] B Bozzini, C Martini, PL Cavallotti, E Lanzoni, “Relationship Among Crystallographic Structure, Mechanical Properties and Tribological Behavior of Electroless Ni–P(9%)/B4C Films”, Wear 225–229 (1999) 806–13
[8] T Rabizadeh, SR Allahkaram, A Zarebidaki, “An Investigation on Effects of Heat Treatment on Corrosion Properties of Electroless Ni–P nano-Coatings”, Mater Des 31 (2010) 3174–9
EN coatings provide material properties that expand the physical properties beyond those of pure nickel coating systems.
Table 1 Hardness of EN and EN-Nylon composite coatings S.No Sample H.V0.05 1 AISI 1045 135±5 2 EN 758±6 3 EN-Nylon 675±5.5 Roughness is very important one factor affecting the corrosion.
[6 ] B Bozzini, C Martini, PL Cavallotti, E Lanzoni, “Relationship Among Crystallographic Structure, Mechanical Properties and Tribological Behavior of Electroless Ni–P(9%)/B4C Films”, Wear 225–229 (1999) 806–13
[8] T Rabizadeh, SR Allahkaram, A Zarebidaki, “An Investigation on Effects of Heat Treatment on Corrosion Properties of Electroless Ni–P nano-Coatings”, Mater Des 31 (2010) 3174–9
Online since: November 2013
Authors: Nooririnah Binti Omar, Yusliza Yusuf, Muhamad Azwar Azhari, Md Ashadi Bin Md Johari
Therefore, it is inevitable to improve the wear properties of Ti-6Al-4V without detrimental the initial corrosion resistance properties even increasing it for better result.
Nevertheless, various methods of surface treatments conducted will certainly affect the corrosion resistant properties of Ti-6Al-4V, since the corrosion resistance of titanium alloys depends very much on the properties of the surface layer [3].
This method is found to increase the mechanical property such as surface hardness of the Ti-6Al-4V alloy [10].
The nature of surface modification result will affect the corrosion resistance properties of the Ti-6Al4V because the presence of microstructural defect the coating was prone to corrosion attack.
Tribological properties of titanium alloys.
Nevertheless, various methods of surface treatments conducted will certainly affect the corrosion resistant properties of Ti-6Al-4V, since the corrosion resistance of titanium alloys depends very much on the properties of the surface layer [3].
This method is found to increase the mechanical property such as surface hardness of the Ti-6Al-4V alloy [10].
The nature of surface modification result will affect the corrosion resistance properties of the Ti-6Al4V because the presence of microstructural defect the coating was prone to corrosion attack.
Tribological properties of titanium alloys.
Online since: July 2011
Authors: Xin Zheng Wu, Xiang Yun Deng, Ri Ke Chen, Hai Tao Zhang, Di Chen, Guo Qing Zhang
As is known to all, dielectric properties of BT electronic ceramic, like permittivity, capacity and impedance etc., are closely related to frequency.
Therefore, some investigations on the complex dielectric properties of BT in different frequency ranges are carried out [2-5].
Arlt [3] reckoned two mechanisms, one is the normal piezoelectric effect and the other is a domain wall effect, as influence factors on dielectric properties at strong ultrasonic microwave frequencies.
For modifying BT ferroelectric and dielectric properties, many elements were introduced to substitute barium and/or titanium ion.
For the former, diffused phase transition is critical to dielectric relaxation behavior in BT-based ferroelectric ceramics [6, 7]; whereas for the later, oxygen vacancies play an important role in affecting dielectric relaxation [8, 9].
Therefore, some investigations on the complex dielectric properties of BT in different frequency ranges are carried out [2-5].
Arlt [3] reckoned two mechanisms, one is the normal piezoelectric effect and the other is a domain wall effect, as influence factors on dielectric properties at strong ultrasonic microwave frequencies.
For modifying BT ferroelectric and dielectric properties, many elements were introduced to substitute barium and/or titanium ion.
For the former, diffused phase transition is critical to dielectric relaxation behavior in BT-based ferroelectric ceramics [6, 7]; whereas for the later, oxygen vacancies play an important role in affecting dielectric relaxation [8, 9].