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Online since: September 2013
Authors: Dao Xia Wu, Chang Feng Yao, Ding Hua Zhang, Wei Zuo
TB6 titanium alloy is widely used in aerospace industries because of its good comprehensive mechanical properties, low density and good corrosion resistance [1].
Mechanical properties in normal and high temperature are shown in Table 2.
Table 1 Chemical composition of TB6(mass fraction, %) Element H O N Fe Al V Ti Wt pct 0.01 0.03 0.03 1.93 2.95 10.15 balance Table 2 Mechanical properties of TB6 Normal temperature ≥ High temperature ≥ tensile strength σb/Mpa 1005 testing temperature ℃ 350 yield strength σ0.2/Mpa 1035 tensile strength σb/Mpa 963 elongation δ/% 11.1 fracture strength σ100/Mpa 840 shrinkage rage ψ/% 64.4 elongation δ/% 16.8 impact value аk/J·cm-2 60 shrinkage rage ψ/% 70.8 Simulation model and processing condition.
In addition, contact length of milling cutter and chip increase outgoing area of cutting calories. several factors make the temperature increase slowly.
Heat affected zone on milling cutter reduce with increasing of vc.
Mechanical properties in normal and high temperature are shown in Table 2.
Table 1 Chemical composition of TB6(mass fraction, %) Element H O N Fe Al V Ti Wt pct 0.01 0.03 0.03 1.93 2.95 10.15 balance Table 2 Mechanical properties of TB6 Normal temperature ≥ High temperature ≥ tensile strength σb/Mpa 1005 testing temperature ℃ 350 yield strength σ0.2/Mpa 1035 tensile strength σb/Mpa 963 elongation δ/% 11.1 fracture strength σ100/Mpa 840 shrinkage rage ψ/% 64.4 elongation δ/% 16.8 impact value аk/J·cm-2 60 shrinkage rage ψ/% 70.8 Simulation model and processing condition.
In addition, contact length of milling cutter and chip increase outgoing area of cutting calories. several factors make the temperature increase slowly.
Heat affected zone on milling cutter reduce with increasing of vc.
Online since: August 2013
Authors: Bo Huang, Hua Lu, Hua Shuai Zhao, Meng Meng, Ming Liang
Introduction
With the in-depth research on rock dynamic mechanical, it is found that the mechanical properties of the rock under dynamic loading are significantly different from the static loading of the mechanical responses.
The experiment result of rock materials in impact loading mechanical properties is study of rock structure.
Meanwhile, the mechanical properties of rock material also depended on the external loading condition, such as loading rata, magnitude of load and coupling conditions.
The rock will be influenced by various physical or chemical fluids so that its own mechanism of organizational structure will be destroyed, and its physical and mechanical properties will be affected.
Vol.2 (1984), P.1-9 (in Chinese) [2] Litian Xin, Xiang He and Min Su: Mechanical properties of rock under impact loading.
The experiment result of rock materials in impact loading mechanical properties is study of rock structure.
Meanwhile, the mechanical properties of rock material also depended on the external loading condition, such as loading rata, magnitude of load and coupling conditions.
The rock will be influenced by various physical or chemical fluids so that its own mechanism of organizational structure will be destroyed, and its physical and mechanical properties will be affected.
Vol.2 (1984), P.1-9 (in Chinese) [2] Litian Xin, Xiang He and Min Su: Mechanical properties of rock under impact loading.
Online since: October 2012
Authors: Chang Nan Liu, Yan Jun Tan, Xiu Na Chen
The main factor affecting the rubbing fastness is the friction coefficient of the film.
This paper has studied soft and hard monomer ratio and the main factors affecting the synthesis process in acrylic emulsion polymerization to investigate the best synthetic process.
The basic factors: A-butyl acrylate, B-methyl methacrylate, C-acrylonitrile, D-acrylic acid.
Change the amount of the emulsion, fabric properties after printing is shown in Table 4.
In the discussion course of these factors, we explore the optimal technical parameters to develop printing adhesives.
This paper has studied soft and hard monomer ratio and the main factors affecting the synthesis process in acrylic emulsion polymerization to investigate the best synthetic process.
The basic factors: A-butyl acrylate, B-methyl methacrylate, C-acrylonitrile, D-acrylic acid.
Change the amount of the emulsion, fabric properties after printing is shown in Table 4.
In the discussion course of these factors, we explore the optimal technical parameters to develop printing adhesives.
Online since: June 2016
Authors: A.M. Al-Mukhtar
Hence, a desired weld size with the mechanical properties is required.
This is made often to correlate the metallurgical factors with the mechanical properties.
In addition, this test showing also the metallurgical factors relation with the mechanical properties of the weld nugget.
Therefore, the electrode pressure influences the heating by affecting the contact resistance [41].
Heat Treatments have the effect on the mechanical properties.
This is made often to correlate the metallurgical factors with the mechanical properties.
In addition, this test showing also the metallurgical factors relation with the mechanical properties of the weld nugget.
Therefore, the electrode pressure influences the heating by affecting the contact resistance [41].
Heat Treatments have the effect on the mechanical properties.
Online since: August 2011
Authors: Jun Wang, Chuan Zhen Huang, Shu Guang Zhang, Cui Lian Che, Hong Tao Zhu
So, characteristics of the metal kerf are affected by conditions of erosion.
The mechanical properties and chemical composition are listed in Table 1 and Table 2 respectively.
Mechanical Properties of Q235 Steel Material Tensile Strength (MPa) Yield Strength (MPa) Elongation Rate (%) Q235 375-460 ≥235 ≥26 Table 2.
It is found that cutting speed and abrasive grit are the significant factors under more than 95% confidence level, abrasive flow rate is the significant factor under more than 90% confidence level and waterjet pressure and standoff are not significant factors relatively.
Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science.
The mechanical properties and chemical composition are listed in Table 1 and Table 2 respectively.
Mechanical Properties of Q235 Steel Material Tensile Strength (MPa) Yield Strength (MPa) Elongation Rate (%) Q235 375-460 ≥235 ≥26 Table 2.
It is found that cutting speed and abrasive grit are the significant factors under more than 95% confidence level, abrasive flow rate is the significant factor under more than 90% confidence level and waterjet pressure and standoff are not significant factors relatively.
Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science.
Online since: August 2023
Authors: Taj-Dine Lamcharfi, N.S. Echatoui, M. Mesrar, Najwa Gouitaa, Farid Abdi
The ceramics exhibited a high temperature of maximum dielectric permittivity at (Tmax =
343 °C at 100 kHz) along with electromechanical coupling factors (kp = 0.34, d33 = 147 pC/N).
This demonstrates that potassium affects the Tm (transition-temperature).
Electromechanical properties The spectra of electrical impedance and conductance versus frequency, that were obtained by an Agilent 4284A precision impedance analyzer, were used to determine the electromechanical coupling coefficient kt, mechanical quality factor Qm and acoustic impedance Z.
Figure 16 shows an inverse relationship between the mechanical quality factor Qm and the dielectric loss (tanδ).
Mechanical quality factor Qm and frequency constant Nφ according to content of xKBT Fig. 17 shows the electromechanical and piezoelectric properties of (1-x)NBT-xKBT systems.
This demonstrates that potassium affects the Tm (transition-temperature).
Electromechanical properties The spectra of electrical impedance and conductance versus frequency, that were obtained by an Agilent 4284A precision impedance analyzer, were used to determine the electromechanical coupling coefficient kt, mechanical quality factor Qm and acoustic impedance Z.
Figure 16 shows an inverse relationship between the mechanical quality factor Qm and the dielectric loss (tanδ).
Mechanical quality factor Qm and frequency constant Nφ according to content of xKBT Fig. 17 shows the electromechanical and piezoelectric properties of (1-x)NBT-xKBT systems.
Online since: September 2011
Authors: Li Jie Yang, Qi Ming Yang
Fracturing pump valve's failure, except wear and tear factors, and also decided by the scope of it's contact stress, material and heat treatment in technology.
Through the analysis of these, some conclusions had been found: The content of remnant austenite would be affected the performance of wear resistance, and the core hardness would be directly affected the working life of it.
From Fig.4, you should be found a lot of ferrite should be brought about unfavorable effect to the mechanical properties in the core area, and would be led to distortion and fissures appeared, and accelerated the failure of the valves.
Conclusion According to the analysis above, some conclusions could be obtained: The content of remnant austenite would be affected the performance of wear resistance, and the core hardness would be directly affected the working life of it.
[3] Yang Qiming et al, Resisting Wear's Property Research of the Material of New Type Fracturing Pump's Valve.
Through the analysis of these, some conclusions had been found: The content of remnant austenite would be affected the performance of wear resistance, and the core hardness would be directly affected the working life of it.
From Fig.4, you should be found a lot of ferrite should be brought about unfavorable effect to the mechanical properties in the core area, and would be led to distortion and fissures appeared, and accelerated the failure of the valves.
Conclusion According to the analysis above, some conclusions could be obtained: The content of remnant austenite would be affected the performance of wear resistance, and the core hardness would be directly affected the working life of it.
[3] Yang Qiming et al, Resisting Wear's Property Research of the Material of New Type Fracturing Pump's Valve.
Online since: September 2014
Authors: Andrey V. Ponomarev, E.N. Pashkov, Nikita V. Martyushev
Data on the influence of various factors on balancing accuracy are presented.
It is because of lack of efficiency of liquid autobalancing devices due to the low density of such liquids, that the factors affecting the balancing accuracy have not been extensively analysed.
Hence, there appeared the necessity to investigate various factors affecting the accuracy of balancing.
Results Let us consider the effect of various factors on balancing accuracy since it is necessary for the explanation of the further research.
Cherdantsev, Properties and structural state of the surface layer in a zirconium alloy modified by a pulsed electron beam and saturated by hydrogen, Technical Physics. 57 (2012) 392 – 398 [10] V.E.
It is because of lack of efficiency of liquid autobalancing devices due to the low density of such liquids, that the factors affecting the balancing accuracy have not been extensively analysed.
Hence, there appeared the necessity to investigate various factors affecting the accuracy of balancing.
Results Let us consider the effect of various factors on balancing accuracy since it is necessary for the explanation of the further research.
Cherdantsev, Properties and structural state of the surface layer in a zirconium alloy modified by a pulsed electron beam and saturated by hydrogen, Technical Physics. 57 (2012) 392 – 398 [10] V.E.
Online since: May 2013
Authors: Chun Yu Wang, Hong Yun Zhao, Huan Ran Li, Chun Lin Qin, Lei Li
Taking into account the factors of environmental protection, economy and convenience for mass production, and superior corrosion resistance, hot-dip aluminizing is one of the most practical processes utilized on steel.
The Fe-Al alloys layer affects the mechanical properties of welded joint, and makes the required heat input increasing, as a comparison; the uncoated steels optimum heat input is ~3480J/cm.
The heat input of different dipping process corresponding to the best mechanical properties is ~3840J/cm.
The results of optimum heat input show that the ~3840J/cm has the best mechanical properties for Al coating steels.
[J].Transactions of the Korean Society of Mechanical Engineers, 2010, 34(10): 1367-1375
The Fe-Al alloys layer affects the mechanical properties of welded joint, and makes the required heat input increasing, as a comparison; the uncoated steels optimum heat input is ~3480J/cm.
The heat input of different dipping process corresponding to the best mechanical properties is ~3840J/cm.
The results of optimum heat input show that the ~3840J/cm has the best mechanical properties for Al coating steels.
[J].Transactions of the Korean Society of Mechanical Engineers, 2010, 34(10): 1367-1375
Online since: September 2007
Authors: Joerg Pezoldt, Volker Cimalla, Christian Förster, Oliver Ambacher, Florentina Will, Ralf Stephan, Klemens Brueckner, Matthias A. Hein
The resonant frequencies and quality factors of MEMS and NEMS depend critically on
the layer quality and the residual stress in the SiC/Si heterostructure.
Introduction The superior mechanical properties of SiC like the high Young's modulus, the extreme mechanical hardness and stiffness predestines this material for microsensors and microactuators in micro- and nanoelectromechanical systems (MEMS and NEMS).
To extract the properties of every layer in the heterostructure model calculations have to be carried out to account for the phonon vibrations and damping factors.
The phonon properties were determined by modeling of the obtained Ψ and ∆ spectra in the region between 600 and 1200 cm -1.
The strain variation across the wafer can be affected by two main factors.
Introduction The superior mechanical properties of SiC like the high Young's modulus, the extreme mechanical hardness and stiffness predestines this material for microsensors and microactuators in micro- and nanoelectromechanical systems (MEMS and NEMS).
To extract the properties of every layer in the heterostructure model calculations have to be carried out to account for the phonon vibrations and damping factors.
The phonon properties were determined by modeling of the obtained Ψ and ∆ spectra in the region between 600 and 1200 cm -1.
The strain variation across the wafer can be affected by two main factors.