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Online since: February 2019
Authors: Jun Park, Min Sik Lee, Chung Gil Kang
However, no standard has yet been established to evaluate the replacement of automobile parts, and such a standard must account for mechanical properties of the material under tensile and flexural loadings.
Recently, Lee et al. [12] investigated mechanical properties of center-pillar reinforcements made of CFRP–steel hybrid composites by performing tensile and bending tests.
Subsequently, via numerical analysis and microstructure observation, they confirmed problems associated with mechanical properties of side structures.
Current standards of collision tests solely depend on the trends in mechanical properties observed during tensile and bending tests.
Detailed mechanical properties of PossSD, DP590, and 22MnB5 are listed in Table 1.
Recently, Lee et al. [12] investigated mechanical properties of center-pillar reinforcements made of CFRP–steel hybrid composites by performing tensile and bending tests.
Subsequently, via numerical analysis and microstructure observation, they confirmed problems associated with mechanical properties of side structures.
Current standards of collision tests solely depend on the trends in mechanical properties observed during tensile and bending tests.
Detailed mechanical properties of PossSD, DP590, and 22MnB5 are listed in Table 1.
Online since: March 2010
Authors: Xiao Ping Hu, Xiao Ping Ye
In addition, the large bending moment and shear produced in the
bottom section is also the major factor of failure for the anchor bolts.
The material properties are shown below: Young's modulus of 2.1×105MPa, Poisson's ratio of 0.3, and density of 7850kg/m 3.
In principle, the data should be in line with the three factors of seismic oscillation at the same time: seismic oscillation intensity, spectral characteristics and duration of seismic oscillation [4].
The shear and bending moment on the section at the bottom of the tower equipment are the important reference factors for seismic design and the time history data of each node is obtained from the time history post-processing of ANSYS.
Chen: The Application of A1SYS in Mechanical Equipment and Chemical (Second Edition) (China Water Power Press, Beijing 2007).
The material properties are shown below: Young's modulus of 2.1×105MPa, Poisson's ratio of 0.3, and density of 7850kg/m 3.
In principle, the data should be in line with the three factors of seismic oscillation at the same time: seismic oscillation intensity, spectral characteristics and duration of seismic oscillation [4].
The shear and bending moment on the section at the bottom of the tower equipment are the important reference factors for seismic design and the time history data of each node is obtained from the time history post-processing of ANSYS.
Chen: The Application of A1SYS in Mechanical Equipment and Chemical (Second Edition) (China Water Power Press, Beijing 2007).
Online since: October 2015
Authors: Somjai Peanprasit, Prasert Wirotcheewan
The New Design of Fish Cake Making Machine
Prasert Wirotcheewan1, a * and Somjai Peanprasit1, b
1 Department of Mechanical Engineering, Rajamangala University of Technology Phra Nakhon, Bangkok 10800, Thailand
aprasertwirot@rmutp.ac.th, bsomjai@rmutp.ac.th
Keywords: Fish cake, Design, Machine
Abstract.
The results from the survey reveal that with the property of our fish cake making machine, which can accelerate the preparation of raw fish cake with consistent size, the average user satisfaction score is more than 70%.
In the design section, all factors affecting on this machine include the size of machine that must be suitable for operation, light weight, and free of rust [4].
Nisbett, Shigley’s Mechanical Engineering Design, ninth ed., McGraw-Hill, Singapore, 2011
The results from the survey reveal that with the property of our fish cake making machine, which can accelerate the preparation of raw fish cake with consistent size, the average user satisfaction score is more than 70%.
In the design section, all factors affecting on this machine include the size of machine that must be suitable for operation, light weight, and free of rust [4].
Nisbett, Shigley’s Mechanical Engineering Design, ninth ed., McGraw-Hill, Singapore, 2011
Online since: September 2011
Authors: Xun Gai Wang, Yan Ling Wu, Zhi Li Zhong, Ju Sheng Qiu
The influence of different factors on the sorption, such as pH, amount of hemp powder applied as well as initial concentration, were studied, respectively.
The hemp fibres can be easily converted into small powders under the mechanical action.
This can be explained by the fact that the medium pH affected the solubility of Zn2+ ions and the ionization state of the functional groups of the hemp powders [8].
Effect of initial concentration on sorption amount of Zn2+ ions It is very difficult to compare data from different literature sources, because sorption capacity for zinc ions is dependent on many factors such as initial concentration of zinc ions, contact time and identical researchers selected.
However, hemp powders were proved good sorption property for zinc ions, resulting in low adsorbing rate.
The hemp fibres can be easily converted into small powders under the mechanical action.
This can be explained by the fact that the medium pH affected the solubility of Zn2+ ions and the ionization state of the functional groups of the hemp powders [8].
Effect of initial concentration on sorption amount of Zn2+ ions It is very difficult to compare data from different literature sources, because sorption capacity for zinc ions is dependent on many factors such as initial concentration of zinc ions, contact time and identical researchers selected.
However, hemp powders were proved good sorption property for zinc ions, resulting in low adsorbing rate.
Online since: April 2014
Authors: A. Naeem, Maizatul Shima Shaharun, Israf Ud Din, Duvvuri Subbarao
Recent studies have revealed that methanol can be produced from CO2 hydrogenation with better rates and carbon utilization factors.
Their physical and chemical properties like high surface area, thermal stability, and high mechanical strength make them a suitable for support for different catalytic processes [5].
The objective of the present work is to investigate the effect of copper loading on the physicochemical properties and activity of zirconia-promoted copper/carbon nanofiber catalysts (Cu-ZrO2/CNF).
Foley,Carbogenic molecular sieves: synthesis, properties and applications, Microporous Materials.4 (1995) 407-433 [6] F.
Rodríguez-Ramos,Effect of carbon nanofiber functionalization on the adsorption properties of volatile organic compounds, Journal of Chromatography A.1188 (2008) 264-273 [8] Z.
Their physical and chemical properties like high surface area, thermal stability, and high mechanical strength make them a suitable for support for different catalytic processes [5].
The objective of the present work is to investigate the effect of copper loading on the physicochemical properties and activity of zirconia-promoted copper/carbon nanofiber catalysts (Cu-ZrO2/CNF).
Foley,Carbogenic molecular sieves: synthesis, properties and applications, Microporous Materials.4 (1995) 407-433 [6] F.
Rodríguez-Ramos,Effect of carbon nanofiber functionalization on the adsorption properties of volatile organic compounds, Journal of Chromatography A.1188 (2008) 264-273 [8] Z.
Online since: August 2013
Authors: Xun Fan, Dong Yu Liu, Dian Long Zou, Yun Long Zhang
Reliability Analysis of The Hydraulic Support Pin
Dong Yu Liu1,a, Dian Long Zou1, Yun Long Zhang1, Xun Fan1
1 China University of Mining and Technology (Beijing), School of Mechanical Electronic and Information Engineering, Beijing, 100083, China
aliudongyu1002@163.com
Keywords: Hydraulic Support; The Pin; Reliability;
Abstract: This paper deduced the force formula of the pin through applying load on the top beam.Using the Hertz formula calculating the mean stress and standard deviation of the pin.By using the stress-strength interference theory to calculate the reliability of the pin.
1 Introduction
Hydraulic support is the key equipment in fully-mechanized coal mining face, and it is responsible for the important task of controlling and managing the roof, maintaining a normal work space, moving the face equipment, and protecting personnel and equipment safety.
Its adaptability and reliability is one of the key factors determining whether the fully mechanized equipment is successful or not. [1] Hydraulic shield support of type ZY6000/25/50 is a big mining height, used for thick seam mining.
The structure and size of the pin and the fit clearance directly affect the supporting stability of the support Due to the increasingly complexity of the face, the mining height is constantly increased in height to meet the requirement; therefore the demand on the hydraulic support is on the rise.
Each material property is as follows: Table 2 Material properties Material Poisson's ratio Young's modulus(Gpa) Yield limit(Mpa) Tensile strength(Mpa) Shear strength(Mpa) Q690 0.3 200 730 825 495 30CrMnTi 0.3 206 860 1470 882 Using each special function in MATLAB to get random values of Q, x, f, the reliability of each pin is thus calculated.
Its adaptability and reliability is one of the key factors determining whether the fully mechanized equipment is successful or not. [1] Hydraulic shield support of type ZY6000/25/50 is a big mining height, used for thick seam mining.
The structure and size of the pin and the fit clearance directly affect the supporting stability of the support Due to the increasingly complexity of the face, the mining height is constantly increased in height to meet the requirement; therefore the demand on the hydraulic support is on the rise.
Each material property is as follows: Table 2 Material properties Material Poisson's ratio Young's modulus(Gpa) Yield limit(Mpa) Tensile strength(Mpa) Shear strength(Mpa) Q690 0.3 200 730 825 495 30CrMnTi 0.3 206 860 1470 882 Using each special function in MATLAB to get random values of Q, x, f, the reliability of each pin is thus calculated.
Online since: August 2018
Authors: Hassan El-Hofy, Mohab Hossam, Mohamed Yassin
Recently, materials with superior mechanical properties have been developed and become the optimum choice in many applications such as optics and electronics.
These materials are classified according to their superior mechanical properties; however, they are considered as difficult-to-cut due to the high difficulty they show during cutting.
This work aims to provide a detailed characterization and a focused review of the main cutting factors of VAM.
Moreover, They claimed that the dominant factors that influence the surface quality were feed rate and cutting speed.
Nevertheless, vibration frequency and amplitude are the dominant factors that need further investigations.
These materials are classified according to their superior mechanical properties; however, they are considered as difficult-to-cut due to the high difficulty they show during cutting.
This work aims to provide a detailed characterization and a focused review of the main cutting factors of VAM.
Moreover, They claimed that the dominant factors that influence the surface quality were feed rate and cutting speed.
Nevertheless, vibration frequency and amplitude are the dominant factors that need further investigations.
Online since: June 2017
Authors: Lei Lei Xiao, Ya Zheng Liu, Xiao Hang Sun, Yan Ji, Ning Bo Zhou, Bo Jiang
Hardness is the aggregative indicator of mechanical properties such as strength, plasticity and toughness of material.
Therefore, it is necessary to study the influence factors and the change law of the hardness, which is of great significance to the control of the hot working technology of connecting rod.
However, the hardness of C70S6 is affected significantly by the ratio of pearlite and sorbite due to the extremely little ferrite content.
Hu, Research on Microstructure and Mechanical Properties and Fracture Splitting Properties of Forged Connecting Rod of C70S6 Non-quenched and Tempered Steel, Hot Working Technology. 44 (2015) 39-43.
Yue, The effect of microstructural characteristics of pearlite on the mechanical properties of hypereutectoid steel, Mater.
Therefore, it is necessary to study the influence factors and the change law of the hardness, which is of great significance to the control of the hot working technology of connecting rod.
However, the hardness of C70S6 is affected significantly by the ratio of pearlite and sorbite due to the extremely little ferrite content.
Hu, Research on Microstructure and Mechanical Properties and Fracture Splitting Properties of Forged Connecting Rod of C70S6 Non-quenched and Tempered Steel, Hot Working Technology. 44 (2015) 39-43.
Yue, The effect of microstructural characteristics of pearlite on the mechanical properties of hypereutectoid steel, Mater.
Online since: January 2019
Authors: Amara Carvajal-Perez
Their work demostrates that very thin and optically transparent nanocomposite film can be applied on surface materials, displaying an antibacterial property without affecting the aesthetics of the material.
They help in the stabilization and regulation of pH and also as consolidating works of art or archeology that present loss of physical or mechanical properties.
There have been many studies and products studied with biocidal properties [91].
Colloidal particles of Ca (OH) 2: properties and applications to restoration of frescoes.
Assessment of new protective treatments for porous limestone combining water-repellency and anti-colonization properties.
They help in the stabilization and regulation of pH and also as consolidating works of art or archeology that present loss of physical or mechanical properties.
There have been many studies and products studied with biocidal properties [91].
Colloidal particles of Ca (OH) 2: properties and applications to restoration of frescoes.
Assessment of new protective treatments for porous limestone combining water-repellency and anti-colonization properties.
Online since: January 2012
Authors: S. Zhang, Jiu Hua Xu, Ying Fei Ge, W.L. Bian, S.N. Galyshev
Particle reinforced metal matrix composites (PMMC) possess many outstanding properties and are increasingly applied in automobile, aerospace, electronics and medical industries.
Introduction Particle reinforced metal matrix composites (PMMC) possess many outstanding properties such as high specific stiffness, high wear resistance, low density, high thermal conductivity, low thermal expansion, low fabrication cost, easy shaping etc.
Ge et al. [21] studied the surface finish, surface generation and the influence factors when high speed milling SiCp/2009Al composites using PCD tools.
Reinforcement volume fraction, cutting speed, reinforcement particle size, cooling condition, tool material grain size, heat treatment of the matrix and tool wear were these significant factors which influenced the machined surface quality.
Among the factors which affected Ra, reinforcement volume fraction was the most significant factor and followed by cutting speed and feed rate.
Introduction Particle reinforced metal matrix composites (PMMC) possess many outstanding properties such as high specific stiffness, high wear resistance, low density, high thermal conductivity, low thermal expansion, low fabrication cost, easy shaping etc.
Ge et al. [21] studied the surface finish, surface generation and the influence factors when high speed milling SiCp/2009Al composites using PCD tools.
Reinforcement volume fraction, cutting speed, reinforcement particle size, cooling condition, tool material grain size, heat treatment of the matrix and tool wear were these significant factors which influenced the machined surface quality.
Among the factors which affected Ra, reinforcement volume fraction was the most significant factor and followed by cutting speed and feed rate.