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Online since: October 2014
Authors: Yue Xian Song, Cheng Yong Wang, Chun Lin Qiu
The principles and factors which influence on deburring and some application examples are also described in this paper.
Burrs directly affect the dimensional, shape, position accuracy and surface quality of the workpiece.
Influencing factors of water jet on deburring Burrs have three parameters which are thickness, hardness and shape, the difficulties of deburring mainly depend on the thickness of burrs and hardness[7].
Factors which affect micro-abrasive water jet are complex, could be divided into 5 categories as shown in Figure. 3, every category includes several factors which are listed in square frame, then, these factors which influence on jet are described on the following parts.
[9] Zhong Shengyu, Liao Qidian, Zhu Yong, Effect of nozzle shape on the properties of high pressure water jet, Vol.2, No.4, 1987.12
Burrs directly affect the dimensional, shape, position accuracy and surface quality of the workpiece.
Influencing factors of water jet on deburring Burrs have three parameters which are thickness, hardness and shape, the difficulties of deburring mainly depend on the thickness of burrs and hardness[7].
Factors which affect micro-abrasive water jet are complex, could be divided into 5 categories as shown in Figure. 3, every category includes several factors which are listed in square frame, then, these factors which influence on jet are described on the following parts.
[9] Zhong Shengyu, Liao Qidian, Zhu Yong, Effect of nozzle shape on the properties of high pressure water jet, Vol.2, No.4, 1987.12
Online since: June 2020
Authors: Gita Indah Budiarti, Dika Fajariyanto, Okta Hendratno
The difference in NaOH concentration affects the characteristics of the xylan colour produced.
The value is obtained by taking the average value of each test because the values obtained are not uniform due to uneven paper thickness factors as well as the low density of paper, so that when data collection causes differences in results.
Factors that affect the strength of the tear is the bond between the fibre and the level or the length of the grinding length of the fibre, the longer the fibre, the lower the tear strength, because long fibres have low flexibility [9].
References [1] Dienes, D., Effect of cellulase enzymes on secondary fiber properties.
[4] Deutschle, A.L., Römhil, K, Meister, F., Janzon, R., Riegert, C., Saake, B., Effects of cationic xylan from annual plants on the mechanical properties of paper, Carbohydrate Polymers, (2014) Vol. 102, 627-635
The value is obtained by taking the average value of each test because the values obtained are not uniform due to uneven paper thickness factors as well as the low density of paper, so that when data collection causes differences in results.
Factors that affect the strength of the tear is the bond between the fibre and the level or the length of the grinding length of the fibre, the longer the fibre, the lower the tear strength, because long fibres have low flexibility [9].
References [1] Dienes, D., Effect of cellulase enzymes on secondary fiber properties.
[4] Deutschle, A.L., Römhil, K, Meister, F., Janzon, R., Riegert, C., Saake, B., Effects of cationic xylan from annual plants on the mechanical properties of paper, Carbohydrate Polymers, (2014) Vol. 102, 627-635
Online since: June 2015
Authors: V.S. Senthil Kumar, S. Chezhian Babu
They have identified the influential incremental sheet metal forming factors as the sheet thickness, tool radius, tool speed, tool feed and Step Depth.
Fixture with sheet fitted on CNC machine table The chemical composition and physical properties of IS 513 CR3 steel deep drawing quality shown in the table 1.
The material properties of IS: 513 CR3 steel is shown in table 2 and the geometrical dimension of the sheet and tool in table 3.
Table 2: Material Properties of IS: 513 CR3 steel Material Properties Yield Strength [Mpa] Max Tensile Strength [Mpa] Min % Elongation [50 GL] Min Poisson’s Ratio Hardness [HRB] Max Value 240 270 32 0.3 55 Table 3: Geometrical Dimensions of sheet and tool Sl.
Also the material properties are affecting FLD during incremental forming. [14].
Fixture with sheet fitted on CNC machine table The chemical composition and physical properties of IS 513 CR3 steel deep drawing quality shown in the table 1.
The material properties of IS: 513 CR3 steel is shown in table 2 and the geometrical dimension of the sheet and tool in table 3.
Table 2: Material Properties of IS: 513 CR3 steel Material Properties Yield Strength [Mpa] Max Tensile Strength [Mpa] Min % Elongation [50 GL] Min Poisson’s Ratio Hardness [HRB] Max Value 240 270 32 0.3 55 Table 3: Geometrical Dimensions of sheet and tool Sl.
Also the material properties are affecting FLD during incremental forming. [14].
Properties and Applications of Dielectric Materials Derived from Metal-Organic Frameworks - A Review
Online since: May 2023
Authors: Vinayak Adimule, N. Mujafarkani, Santosh S. Nandi, Shankramma S. Kerur, B. Thirumalaiyammal, Abhinay Gupta
We discuss the essential properties of dielectrics and how MOFs can be used to alter these properties for certain applications.
Bagihalli, Dielectric and Mechanical Properties of Silicone Rubber Composites Reinforced by Conductive Carbon Black and Neopentyl Glycol Diglycidyl Ether, Silicon (2022)
Surendranathan, Investigation of Structural and Mechanical Properties of Nanostructured TiMgSr Alloy for Biomedical applications, Biointerface Res.
Surendranathan, Investigation of microstructure and mechanical properties of microwave consolidated TiMgSr alloy prepared by high energy ball milling, Powder Technol., (2022) 408 117715
Bagihalli, Dielectric and Mechanical Properties of Silicone Rubber Composites Reinforced by Conductive Carbon Black and Neopentyl Glycol Diglycidyl Ether, Silicon, (2022) 1-18
Bagihalli, Dielectric and Mechanical Properties of Silicone Rubber Composites Reinforced by Conductive Carbon Black and Neopentyl Glycol Diglycidyl Ether, Silicon (2022)
Surendranathan, Investigation of Structural and Mechanical Properties of Nanostructured TiMgSr Alloy for Biomedical applications, Biointerface Res.
Surendranathan, Investigation of microstructure and mechanical properties of microwave consolidated TiMgSr alloy prepared by high energy ball milling, Powder Technol., (2022) 408 117715
Bagihalli, Dielectric and Mechanical Properties of Silicone Rubber Composites Reinforced by Conductive Carbon Black and Neopentyl Glycol Diglycidyl Ether, Silicon, (2022) 1-18
Online since: June 2012
Authors: Xue Xia Xu, Xiang Feng Zheng, Yan Ting Feng
Failure cause analysis was carried out on tee joint crack of boiler platen superheater header (12Cr1MoV) of subcritical power station applying microanalysis, mechanical properties test, chemical composition analysis, metallography examination and SEM observation etc.
The above disadvantageous factor can bring cracking easily.
Besides structure factors, original weld defects also contributed to the crack formation such as blow hole, lack of fusion and original weld cracks as shown in Fig.3 and Fig4.
Structure analysis showed that there existed a series of improper factors in the tee joint design.
Split-rod should be carried out for those with defects to remove the metal of weld seam and heat-affected zone.
The above disadvantageous factor can bring cracking easily.
Besides structure factors, original weld defects also contributed to the crack formation such as blow hole, lack of fusion and original weld cracks as shown in Fig.3 and Fig4.
Structure analysis showed that there existed a series of improper factors in the tee joint design.
Split-rod should be carried out for those with defects to remove the metal of weld seam and heat-affected zone.
Online since: July 2006
Authors: Dun Wen Zuo, J. Hu, S.H. Wang, L.L. Xu, H. Guo, Min Wang
Among factors, original residual stress, cutting force
and clamping force are the main factors to cause the deformation of a complex workpiece.
However, their studies mainly focus on a given structure and certain factor in the numerous influencing factors, so practicality and applicability are limited.
Stress-strain properties of materials adopt true stress and strain.
Hiroyasu: Transactions of the Japan Society of Mechanical Engineers (Series C) Vol.63 (1997) No.605, pp.239-246
Huang: China Mechanical Engineering, Vol.10 (2003) No.14, pp.1684-1686
However, their studies mainly focus on a given structure and certain factor in the numerous influencing factors, so practicality and applicability are limited.
Stress-strain properties of materials adopt true stress and strain.
Hiroyasu: Transactions of the Japan Society of Mechanical Engineers (Series C) Vol.63 (1997) No.605, pp.239-246
Huang: China Mechanical Engineering, Vol.10 (2003) No.14, pp.1684-1686
Online since: November 2012
Authors: Chang Zheng Chen, Zi Qiang Sun, Bo Zhou
Multi-fractal theory
The complex dynamic of large-scale wind turbines is affected by fluid-solid coupling, which shows great nonlinear dynamic signal.
And traditional methods are often based on linear analysis without taking into account the non-Gaussianity un-stationary, and nonlinear factors, so these methods are not suitable for state recognition of large-scale wind turbines.
A larger α of the multi-fractal spectrums reflects the smaller regional properties, and vice verse.
Journal of mechanical engineering, 2011, 47(9):45-50
Mechanical Systems and Signal Processing, 2007, 21(5):2012–2024
And traditional methods are often based on linear analysis without taking into account the non-Gaussianity un-stationary, and nonlinear factors, so these methods are not suitable for state recognition of large-scale wind turbines.
A larger α of the multi-fractal spectrums reflects the smaller regional properties, and vice verse.
Journal of mechanical engineering, 2011, 47(9):45-50
Mechanical Systems and Signal Processing, 2007, 21(5):2012–2024
Online since: October 2007
Authors: Ren Guo Guan, Zhen Huan Xing, Yi Wang, Lu Shi, Chao Wang
Thixo-forming products of two alloys are fine with smooth
appearance, good microstructures and properties.
Results and discussion Microstructures of semisolid billets and influence factors Fig.2 shows the appearance and inner surface of semisolid billets of AZ91D alloy prepared by semi-continuous casting.
Vibrating amplitude can greatly affect microstructures of the alloys.
Thixo-forming products of Al-6Si-2Mg (wt-%) and AZ91D alloys are fine with smooth appearance and good microstructures and properties, as shown in Figs.6 and 7.
Thixo-forming products of two alloys are fine with smooth appearance, good microstructures and properties.
Results and discussion Microstructures of semisolid billets and influence factors Fig.2 shows the appearance and inner surface of semisolid billets of AZ91D alloy prepared by semi-continuous casting.
Vibrating amplitude can greatly affect microstructures of the alloys.
Thixo-forming products of Al-6Si-2Mg (wt-%) and AZ91D alloys are fine with smooth appearance and good microstructures and properties, as shown in Figs.6 and 7.
Thixo-forming products of two alloys are fine with smooth appearance, good microstructures and properties.
Online since: August 2016
Authors: Waddah Al Hawat, Osama Ahmed Mohamed
Mohamed, Rens K L, Stalnaker J J Factors Affecting Resistance of Concrete to Freezing and Thawing Damage.
Marian, Comparing the performance of fine fly ash and silica fume in enhancing the properties of concrete containing fly ash, J.
Supit, Compressive strength and durability properties of high volume fly ash (HVFA) concretes containing ultrafine fly ash (UFFA), J.
Gołaszewski J, The effect of high-calcium fly ash on selected properties of self-compacting concrete, Archives in Civil and Mechanical Engineering, Elsevier 2014; 14: pp. 455-465
Siddique, Properties of self-compacting concrete containing class F fly ash.
Marian, Comparing the performance of fine fly ash and silica fume in enhancing the properties of concrete containing fly ash, J.
Supit, Compressive strength and durability properties of high volume fly ash (HVFA) concretes containing ultrafine fly ash (UFFA), J.
Gołaszewski J, The effect of high-calcium fly ash on selected properties of self-compacting concrete, Archives in Civil and Mechanical Engineering, Elsevier 2014; 14: pp. 455-465
Siddique, Properties of self-compacting concrete containing class F fly ash.
Online since: March 2015
Authors: Jing Zhang, Yu Ke Shi, Qian Hao Zang, Hong Mei Chen, Yun Xue Jin
The effect of sequential annealing on microstructure and damping capacity of TRC ZK60 alloy was studied by using optical microscope (OM) and dynamic mechanical analyzer (DMA).
The mechanical properties of TRC magnesium alloy strip are equivalent to or better than those of cast magnesium alloy which was warm/hot rolled.
The microstructure, mechanical properties and damping capacity of twin roll cast ZK60 alloy strip after annealed treatment was studied in this paper.
Damping capacity was measured by dynamic mechanical analyzer (NETZSCH DMA-242C) in single cantilever deformation mode.
The values were mainly affected by the distance of weak point (solute atoms).
The mechanical properties of TRC magnesium alloy strip are equivalent to or better than those of cast magnesium alloy which was warm/hot rolled.
The microstructure, mechanical properties and damping capacity of twin roll cast ZK60 alloy strip after annealed treatment was studied in this paper.
Damping capacity was measured by dynamic mechanical analyzer (NETZSCH DMA-242C) in single cantilever deformation mode.
The values were mainly affected by the distance of weak point (solute atoms).