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Online since: June 2025
Authors: Sunaryono Sunaryono, Anugrah Pratama Supriyono, Nadiya Miftachul Chusna, Arif Hidayat
In DSSC applications, platinum (Pt) is often chosen as the CE because of its excellent catalytic properties and stability.
Nonetheless, while numerous studies have focused on CE metal oxide materials in DSSC solar cells, there has been limited research on how varying Fe3O4 concentrations in rGO/Fe3O4 nanocomposites affect the characteristics and electrical properties of the resulting materials.
The optical properties and bandgap energy values of rGO/Fe3O4 nanocomposites were analyzed using UV-Vis spectroscopy.
Enhanced catalytic properties can boost DSSC efficiency by accelerating the I3- to I- reduction process at the CE surface.
Maleki, and I, Zare, Effects of mechanical properties of carbon-based nanocomposites on scaffolds for tissue engineering applications: a comprehensive review, Nanoscale Adv, (2024)
Nonetheless, while numerous studies have focused on CE metal oxide materials in DSSC solar cells, there has been limited research on how varying Fe3O4 concentrations in rGO/Fe3O4 nanocomposites affect the characteristics and electrical properties of the resulting materials.
The optical properties and bandgap energy values of rGO/Fe3O4 nanocomposites were analyzed using UV-Vis spectroscopy.
Enhanced catalytic properties can boost DSSC efficiency by accelerating the I3- to I- reduction process at the CE surface.
Maleki, and I, Zare, Effects of mechanical properties of carbon-based nanocomposites on scaffolds for tissue engineering applications: a comprehensive review, Nanoscale Adv, (2024)
Online since: March 2025
Authors: Eva Maria Perez-Soriano, Isabel Montealegre-Meléndez, Cristina M. Arévalo, Erich Neubauer
The aim was to analyse how slight manufacturing variations can significantly or insignificantly affect the final wear properties.
A single sample from Group 1 was processed at 50 MPa to check whether this reduction in pressure affected the final properties.
Another factor improving the properties was the compaction pressure.
- The matrix powder affected the final properties.
Ruan, Effects of TiB2 particle size on the microstructure and mechanical properties of TiB2-based composites, Ceram.
A single sample from Group 1 was processed at 50 MPa to check whether this reduction in pressure affected the final properties.
Another factor improving the properties was the compaction pressure.
- The matrix powder affected the final properties.
Ruan, Effects of TiB2 particle size on the microstructure and mechanical properties of TiB2-based composites, Ceram.
Online since: October 2011
Authors: Yu Long Shen, Ji Pu Liu, Yi Xin Shi, Bo Dai, Liang Su, Wen Bo Ma
The existence of welding residual stress will reduce fatigue strength and other mechanical properties when the components were servicing.
We also select the largest peak as to experimental point in the weld and heat affected zone of each section.
Deviation of drilling holes, plastic deformation and holes depth are the factors causing the calculation error of blind-hole method, so the authors suggest that the finite element analysis should be used for designing the weldment of Wind-driven generator as reference.
[2] Yi Pei, Yafeng Bao, Muyao Tang: Journal of Mechanical Strength, Vol. 19(1997) No.1, p. 18-21
[6] Xiaoxue Liu, Wei Tong: Mechanical Research & Application, Vol. 20(2007) No.3, p.26-34
We also select the largest peak as to experimental point in the weld and heat affected zone of each section.
Deviation of drilling holes, plastic deformation and holes depth are the factors causing the calculation error of blind-hole method, so the authors suggest that the finite element analysis should be used for designing the weldment of Wind-driven generator as reference.
[2] Yi Pei, Yafeng Bao, Muyao Tang: Journal of Mechanical Strength, Vol. 19(1997) No.1, p. 18-21
[6] Xiaoxue Liu, Wei Tong: Mechanical Research & Application, Vol. 20(2007) No.3, p.26-34
Online since: October 2014
Authors: Gleb A. Turichin, V.V. Somonov, Olga G. Klimova-Korsmik
The article also describes the research of layer microstructure, deposited by high power fiber laser cladding, and result of analysis of the dependence metal properties from the transition-layer cladding mode.
Finally, the task of the flow of vapor jets, falling on the surface of the substrate, defines the field of gas velocity, affecting the transfer of powder.
We assume that the powder forms dense packing with factor of packaging equal 0.74.
This allows us to predict high mechanical properties of the coating, as the floor consists mainly of the added metal.
Tret’yakov, “The analysis of influence of parameters of coaxial laser cladding on the formation of beads”, “Technology of mechanical engineering.
Finally, the task of the flow of vapor jets, falling on the surface of the substrate, defines the field of gas velocity, affecting the transfer of powder.
We assume that the powder forms dense packing with factor of packaging equal 0.74.
This allows us to predict high mechanical properties of the coating, as the floor consists mainly of the added metal.
Tret’yakov, “The analysis of influence of parameters of coaxial laser cladding on the formation of beads”, “Technology of mechanical engineering.
Online since: May 2015
Authors: Yi Dong Liu, Zhong He Jin, Ming Jun Ma
The bias instability is affected by 1/f noise.
However, the drift property is quite inferior in front of traditional mechanical sensors.
However, more researches are waiting to find the dominant factors that determine the bias instability when referring to the specific blocks of systems.
The closed loop scale factor with DFA is 2.5V/g, and the loop with MFA is about 15V/g.
Micro Electro Mechanical Systems (MEMS), 2013 IEEE 26th International Conference, 20-24 Jan. 2013, 29-32
However, the drift property is quite inferior in front of traditional mechanical sensors.
However, more researches are waiting to find the dominant factors that determine the bias instability when referring to the specific blocks of systems.
The closed loop scale factor with DFA is 2.5V/g, and the loop with MFA is about 15V/g.
Micro Electro Mechanical Systems (MEMS), 2013 IEEE 26th International Conference, 20-24 Jan. 2013, 29-32
Online since: May 2014
Authors: Ismet Baran, Jesper Hattel, Remko Akkerman
the former has transversely isotropic properties, and on the other hand the latter has the quasi-isotropic
(QI) properties.
Lumped material properties are used and assumed to be constant.
On the other hand, the effective mechanical properties of the QI CFM layer is calculated considering the material properties of the UD layer obtained by the SCFM approach for the same Vf as the QI layer [15].
Different local material orientation is employed for the UD and CFM layers in order to reflect the mechanical properties correctly.
On the properties of quasi-isotropic laminates.
Lumped material properties are used and assumed to be constant.
On the other hand, the effective mechanical properties of the QI CFM layer is calculated considering the material properties of the UD layer obtained by the SCFM approach for the same Vf as the QI layer [15].
Different local material orientation is employed for the UD and CFM layers in order to reflect the mechanical properties correctly.
On the properties of quasi-isotropic laminates.
Online since: November 2012
Authors: Yong Jie Chen, Chen Chen, Yang Liu, Ning Li
Also the reasons which lead to the failure of improving the friction properties are analyzed.
Shuting Le [8] performed a mechanical analysis on micro-texture using FEA and found that the placement of micro-texture do not affect the mechanical strength of the tool.
Finally, we compared the test data to determine the role of the textured tool rake face in improving the friction properties Experimental procedures Preparation of carbide tools with micro-texture.
Friction is a significant factor which we mostly concerned about.
Sugihara, Improving anti-adhesive properties of cutting tool surfaces by nano-/micro-textures, CIRP Annals-Manufacturing Technology, 59 (2010):597-600
Shuting Le [8] performed a mechanical analysis on micro-texture using FEA and found that the placement of micro-texture do not affect the mechanical strength of the tool.
Finally, we compared the test data to determine the role of the textured tool rake face in improving the friction properties Experimental procedures Preparation of carbide tools with micro-texture.
Friction is a significant factor which we mostly concerned about.
Sugihara, Improving anti-adhesive properties of cutting tool surfaces by nano-/micro-textures, CIRP Annals-Manufacturing Technology, 59 (2010):597-600
Online since: May 2016
Authors: J.L. Wang, W.W. Song
In the welding process, the welding residual stress and deformation are the key factor affecting the quality of welding.
Therefore, to study the changing process of residual stress in welding process is important. 7022 aluminum alloy has the high strength, wear resistance, corrosion resistance and good mechanical properties.
The input of the physical properties of materials in the finite element analysis process is very important.
The physical properties of the material parameters are shown in Fig.2 and Fig.3, the chemical composition is shown in Table 1.
(a)The change curve of the coefficient (b)The change curve of the heat capacity of thermal conductivity Fig.2 Thermal physical properties parameters of material (a)Modulus of elasticity (b)Poisson's ratio (c)Thermal expansion coefficient Fig.3 Thermal physical properties parameters of material Table1 7022 aluminum alloy chemical composition Zn Mg Cu Fe Mn Si Cr Al 5.43 2.52 1.43 0.42 0.35 0.35 0.05 Balance Meshing dividing.
Therefore, to study the changing process of residual stress in welding process is important. 7022 aluminum alloy has the high strength, wear resistance, corrosion resistance and good mechanical properties.
The input of the physical properties of materials in the finite element analysis process is very important.
The physical properties of the material parameters are shown in Fig.2 and Fig.3, the chemical composition is shown in Table 1.
(a)The change curve of the coefficient (b)The change curve of the heat capacity of thermal conductivity Fig.2 Thermal physical properties parameters of material (a)Modulus of elasticity (b)Poisson's ratio (c)Thermal expansion coefficient Fig.3 Thermal physical properties parameters of material Table1 7022 aluminum alloy chemical composition Zn Mg Cu Fe Mn Si Cr Al 5.43 2.52 1.43 0.42 0.35 0.35 0.05 Balance Meshing dividing.
Online since: September 2020
Authors: Tuyen Vo, Hoang Duc Lien, Tan Ken Nguyen, Thanh Nam Nguyen, Le Khanh Dien
A Research on Optimization of Technological Parameters to the Objective Function of the Deep Dimensions when Forming Sheet Material by HOTSPIF
Vo Tuyen1,a, Le Khanh Đien2,b*, Nguyen Thanh Nam2,c, Hoang Duc Lien3,d, Nguyen Tan Ken1,e
1Ho Chi Minh City University of Food Industry (HUFI)
2Faculty of Mechanical Engineering - HCMUT, VNU-HCM
3Viet Nam National University of Agriculture
atuyenvo@hufi.edu.vn, b*dien.lekhanh@stu.edu.vn, cthanhnam@hcmut.edu.vn, dhdlien@vnua.edu.vn, enguyentanken@gmail.com, le.trantrung@stu.edu.vn
Keywords: HOT SPIF, Sheet forming, Technological parameters, Optimization, Dimension
Abstract.
However, sheet materials with high hardness and durability are difficult to deform and shape because of their high properties.
In the present time, studies have focused on most aspects of the processing process such as machine - equipment, forming tools, parameters affecting machining (tool diameter, thickness of sheet, spindle rotation speed, contact conditions, material type ...) [2].
Table 1: The limited value of 4 influential factors Levels D (mm) ∆z(mm) Vxy(mm/min) T (oC) Min 7.5 0.375 1125 510 Max 10.5 0.525 1375 570 Therefore, the number of experiments is 24=16 and with the repetition of 3, the total number of experiments is 48.
In the Response Optimizer dialog box, select the optimal form for the output parameter as depth ΔHmin (Figure 4): Figure 4: Selection of objective function DHmin The Setup section contains satisfaction settings and multivariate optimization factors (Figure 5).
However, sheet materials with high hardness and durability are difficult to deform and shape because of their high properties.
In the present time, studies have focused on most aspects of the processing process such as machine - equipment, forming tools, parameters affecting machining (tool diameter, thickness of sheet, spindle rotation speed, contact conditions, material type ...) [2].
Table 1: The limited value of 4 influential factors Levels D (mm) ∆z(mm) Vxy(mm/min) T (oC) Min 7.5 0.375 1125 510 Max 10.5 0.525 1375 570 Therefore, the number of experiments is 24=16 and with the repetition of 3, the total number of experiments is 48.
In the Response Optimizer dialog box, select the optimal form for the output parameter as depth ΔHmin (Figure 4): Figure 4: Selection of objective function DHmin The Setup section contains satisfaction settings and multivariate optimization factors (Figure 5).
Online since: January 2012
Authors: Piotr Szota, Henryk Dyja, Sebastian Mróz, Anna Kawałek
Introduction
The continuous rolling of long products can be ranked among the most efficient processes that enable a long product of high mechanical and strength properties and good surface quality to be obtained within a narrow dimensional tolerance range [1].
These passes wear during operation, which affects the dimensional accuracy of the finished product and the run of the rolling process [1-3].
(1) where: T - temperature, - strain rate, ε – strain, A0, m1 - m4 – coefficients of steel properties.
In Equation (4), an important factor influencing the wear magnitude is the factor kw [9-11].
[10] Bourithisa L., Papadimitrioua G.D., Sideris J., Comparison of wear properties of tool steels AISI D2 and O1 with the same hardness, Elsevier, Tribology International vol. 39, 2006, p. 479–489
These passes wear during operation, which affects the dimensional accuracy of the finished product and the run of the rolling process [1-3].
(1) where: T - temperature, - strain rate, ε – strain, A0, m1 - m4 – coefficients of steel properties.
In Equation (4), an important factor influencing the wear magnitude is the factor kw [9-11].
[10] Bourithisa L., Papadimitrioua G.D., Sideris J., Comparison of wear properties of tool steels AISI D2 and O1 with the same hardness, Elsevier, Tribology International vol. 39, 2006, p. 479–489