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Online since: September 2017
Authors: Ľuboslav Straka, Slavomíra Hašová
Each of these negative operating factors in a certain percentage is involved in the resulting geometric inaccuracies of machined surface [11].
However, its maximum size must respect the mechanical and physical properties [27] of the wire electrode material.
Pandová, Progressive technology diagnostic and factors affecting to machinability, Applied Mechanics and Materials 616 (2014) 183-190
Piteľ, Properties evaluation of thin microhardened surface layer of tool steel after wire EDM, Metals 6/5 (2016) 1-16
Pandová, Progressive technology diagnostic and factors affecting to machinability, Applied Mechanics and Materials 616 (2014) 183-190
However, its maximum size must respect the mechanical and physical properties [27] of the wire electrode material.
Pandová, Progressive technology diagnostic and factors affecting to machinability, Applied Mechanics and Materials 616 (2014) 183-190
Piteľ, Properties evaluation of thin microhardened surface layer of tool steel after wire EDM, Metals 6/5 (2016) 1-16
Pandová, Progressive technology diagnostic and factors affecting to machinability, Applied Mechanics and Materials 616 (2014) 183-190
Online since: October 2014
Authors: Sheng Li Tang, Bei Bei Han, Li Hai Sun, Zhi Bin Li
Analysis of the instability mechanism of slope
Factors affecting the slope stability analysis
The slope was formed by cut ridges and fill ravines.
This slope is adapted to the new state of stress that will occur in the form corresponding to achieve reduced stress This is the internal factors of landslide, but evolution is often induced by extrinsic factors.
Internal factors include the properties of geotechnical body of slope, geological structure and morphology, groundwater; extrinsic factors included: surface water and climate, weathering, slope vegetation, earthquakes and human activities etc..
According to factors that affect slope stability analyze as follow: The shape of the slope.
The silt content of soil layer is higher, the overall engineering properties is ordinary; Lishi loess is lump, more dense, uniform texture, pores large, and does not have the bedding, which engineering properties is genneral; The third is seriously weathering and joint fissure development that joint surface was infected into a reddish brown by iron, which project performance is poor.
This slope is adapted to the new state of stress that will occur in the form corresponding to achieve reduced stress This is the internal factors of landslide, but evolution is often induced by extrinsic factors.
Internal factors include the properties of geotechnical body of slope, geological structure and morphology, groundwater; extrinsic factors included: surface water and climate, weathering, slope vegetation, earthquakes and human activities etc..
According to factors that affect slope stability analyze as follow: The shape of the slope.
The silt content of soil layer is higher, the overall engineering properties is ordinary; Lishi loess is lump, more dense, uniform texture, pores large, and does not have the bedding, which engineering properties is genneral; The third is seriously weathering and joint fissure development that joint surface was infected into a reddish brown by iron, which project performance is poor.
Online since: June 2006
Authors: Ricky S.C. Woo, Jang Kyo Kim, Arshad Munir, Christopher K.Y. Leung, Naveed A. Siddiqui
Carbon fibre-Organoclay Hybrid Epoxy Composites: Fracture
Behaviours and Mechanical Properties
Jang-Kyo Kim
1, a
, Naveed A Siddiqui1, 3, b, Ricky S.C.
The fracture resistance and mechanical properties of carbon fiber reinforced composites (CFRPs) containing organoclay-filled epoxy resin are studied.
The low fibre volume fraction of about 20% used in this study further supported the relatively high sensitivity of the mechanical properties of composites on the matrix properties.
Clay content (wt%) Flexural Strength (MPa) Flexural Modulus (GPa 0 363.0±21.3 17.2±0.7 3 345.4±21.4 17.5±1.1 5 323.9±43.8 18.1±1.1 7 344.7±19.4 18.9±1.4 In addition to the direct influence of matrix properties, the carbon fibre-matrix interfacial properties are another important factor that is adversely affected by the presence of organoclay in the matrix.
The presence of nanoparticles was seen as having a negative effect on composite mechanical properties through premature interfacial debonding.
The fracture resistance and mechanical properties of carbon fiber reinforced composites (CFRPs) containing organoclay-filled epoxy resin are studied.
The low fibre volume fraction of about 20% used in this study further supported the relatively high sensitivity of the mechanical properties of composites on the matrix properties.
Clay content (wt%) Flexural Strength (MPa) Flexural Modulus (GPa 0 363.0±21.3 17.2±0.7 3 345.4±21.4 17.5±1.1 5 323.9±43.8 18.1±1.1 7 344.7±19.4 18.9±1.4 In addition to the direct influence of matrix properties, the carbon fibre-matrix interfacial properties are another important factor that is adversely affected by the presence of organoclay in the matrix.
The presence of nanoparticles was seen as having a negative effect on composite mechanical properties through premature interfacial debonding.
Online since: January 2007
Authors: C. Briones-Rodríguez, Vicente Mayagoitia, Ricardo Cuenca-Alvarez
Scanning electron
microscopy shows that dry particle coating depends on the thermo-mechanical and chemical
properties of the powdered system.
Therefore the powder characteristics have a significant influence on the resulting coating properties [1].
In some cases, particles can react with the entrained air, be decomposed or evaporated (metals or carbides for example) during their flight in the plasma jet thus affecting the thermomechanical properties of plasma sprayed coatings [2].
However, the combination of different materials helps to limit these effects and even more to increase the coating properties provided that the ceramic particles are uniformly distributed within the coating.
All composite powders are found to be nearly spherical with a mean shape factor of 1.05 (shape factor of 1.0 corresponding to the perfect sphere).
Therefore the powder characteristics have a significant influence on the resulting coating properties [1].
In some cases, particles can react with the entrained air, be decomposed or evaporated (metals or carbides for example) during their flight in the plasma jet thus affecting the thermomechanical properties of plasma sprayed coatings [2].
However, the combination of different materials helps to limit these effects and even more to increase the coating properties provided that the ceramic particles are uniformly distributed within the coating.
All composite powders are found to be nearly spherical with a mean shape factor of 1.05 (shape factor of 1.0 corresponding to the perfect sphere).
Online since: November 2014
Authors: Mohd Zulkefli Selamat, Mohd Shakir Ahmad, Safaruddin Gazali Herawan, Musthafa Mohd Tahir, Mohd Ahadlin Mohd Daud
Since the bipolar plate is the key component in PEMFC, the component must operate with multifunction and have a balance of properties, essentially well in both electrical and mechanical properties.
One of the factors limiting fuel cell commercialization is the development of bipolar plates, which are one of PEMFC’s key components.
Electrical and Mechanical Properties Electrical Conductivity.
In order to satisfy the required properties for the application of bipolar plate, a large amount of filler content is requisite and the impact on mechanical properties is now presented.
As for mechanical properties, the result showed a balance result for each different material.
One of the factors limiting fuel cell commercialization is the development of bipolar plates, which are one of PEMFC’s key components.
Electrical and Mechanical Properties Electrical Conductivity.
In order to satisfy the required properties for the application of bipolar plate, a large amount of filler content is requisite and the impact on mechanical properties is now presented.
As for mechanical properties, the result showed a balance result for each different material.
Online since: July 2020
Authors: Peng Wu, Xue Jun Shan, You Ming Wang
By adopting the combination of orthogonal test and comprehensive score method, optimized design of injection molding technology, adopts the comprehensive evaluation method, the quality of the original data standardization, and linear combination calculation, obtained the optimum technological parameters combination and the significant factors affecting quality index.
In this experiment, the influence factors such as filling time, mechanical property and forming quality were analyzed by orthogonal test.
Kuang Y[3] has adopted orthogonal test method in this experiment to analyze influence factors, such as the filling time, mechanical properties and molding quality in the process of the interjection molding of polypropylene.
Since factors B, C, D, E and F did not have significant influence on quality, they were considered as adjustable factors.
Mechanical Engineer,2016(08):151-153
In this experiment, the influence factors such as filling time, mechanical property and forming quality were analyzed by orthogonal test.
Kuang Y[3] has adopted orthogonal test method in this experiment to analyze influence factors, such as the filling time, mechanical properties and molding quality in the process of the interjection molding of polypropylene.
Since factors B, C, D, E and F did not have significant influence on quality, they were considered as adjustable factors.
Mechanical Engineer,2016(08):151-153
Online since: June 2014
Authors: Gang Yang, Zheng Tong Han, Chang Long Du
Because the factors are independent of each other, interactive effects between them are not taken into consideration.
As being shown in the table, the sequence of the most influencing factors is grinding depth, workpiece speed and wheel speed in order.
(3) Among the influening factors affecting the depth of hardened layer, grinding depth is the most significant one, workpiece speed takes the second place, and wheel characteristic is minor one
(4) Among the influening factors affecting the hardness of hardened surface, only grinding depth is significant relatively, workpiece speed and wheel characteristic is not effective obviously.
:Mechanical Property Improvement of Quenchable Steel by Grinding.
As being shown in the table, the sequence of the most influencing factors is grinding depth, workpiece speed and wheel speed in order.
(3) Among the influening factors affecting the depth of hardened layer, grinding depth is the most significant one, workpiece speed takes the second place, and wheel characteristic is minor one
(4) Among the influening factors affecting the hardness of hardened surface, only grinding depth is significant relatively, workpiece speed and wheel characteristic is not effective obviously.
:Mechanical Property Improvement of Quenchable Steel by Grinding.
Online since: August 2022
Authors: Rahmad Kuncoro Adi, Andika Wisnujati, Ahmad Yusuf, Dika Hidayat, Rela Adi Himarosa, Sudarisman Sudarisman, M. Budi Nur Rahman, Mudjijana Mudjijana
The microstructure and mechanical properties of the welded joints were examined.
As shown in Fig. 4, the fusion zone in the weld area also affects the mechanical properties.
Mechanical properties of simultaneous double-sided MIG welding HAZPlate WMPlate HAZPlate SkinPlate Stringer Fig 6.
Zhang, “Double-sided laser beam welded T-joints for aluminum aircraft fuselage panels: Process, microstructure, and mechanical properties,” Mater.
Mudjijana, “Physical and Mechanical Properties of TIG-MIG Hybrid Welding of 5083H116 Materials,” 2018
As shown in Fig. 4, the fusion zone in the weld area also affects the mechanical properties.
Mechanical properties of simultaneous double-sided MIG welding HAZPlate WMPlate HAZPlate SkinPlate Stringer Fig 6.
Zhang, “Double-sided laser beam welded T-joints for aluminum aircraft fuselage panels: Process, microstructure, and mechanical properties,” Mater.
Mudjijana, “Physical and Mechanical Properties of TIG-MIG Hybrid Welding of 5083H116 Materials,” 2018
Online since: April 2019
Authors: Daynier Rolando Delgado Sobrino, Lázaro Humberto Suárez Lisca, Norge Isaias Coello Machado
This is a highly complex process given the large number of variables and factors involved in it, thus, when one of these is ignored and/or left out of control, process errors and distortions usually occur.
This design studied the factors ‘effects in 16 runs, including 2 central points per block, with the aim of finding the best working area of the risers and the optimal values of the parameters studied under specific conditions.
To better study the influence and interactions of this variables, a design of experiments of the type: Central Composite Design (22) + Star has been selected to be used, which will study the effects of the factors in 16 runs, including 2 central points per block.
This type of steel is also widely used in the mechanical industry for its properties, being a type of steel of medium carbon content and non-alloy.
Farnsworth, Identification of critical factors affecting shrinkage porosity in permanent mold casting using numerical simulations based on design of experiments.
This design studied the factors ‘effects in 16 runs, including 2 central points per block, with the aim of finding the best working area of the risers and the optimal values of the parameters studied under specific conditions.
To better study the influence and interactions of this variables, a design of experiments of the type: Central Composite Design (22) + Star has been selected to be used, which will study the effects of the factors in 16 runs, including 2 central points per block.
This type of steel is also widely used in the mechanical industry for its properties, being a type of steel of medium carbon content and non-alloy.
Farnsworth, Identification of critical factors affecting shrinkage porosity in permanent mold casting using numerical simulations based on design of experiments.
Online since: January 2018
Authors: Hichem Salah, Bel Abbès Bachir Bouiadjra, S.M. Fekih, Mohamed Mokhtar Bouziane, Smail Benbarek
Thielen et all [7] compared the mechanical properties between non reinforced and reinforced cement spacer of hip arthroplasty.
Table 1: Material properties used for the finite elements models [7].
This method was applied to optimize the mechanical and the geometrical properties of reinforcements for cement spacer.
Williams, Factors affecting the outcome of total shoulder arthroplasty.
Viceconti, Fracture properties of an acrylic bone cement.
Table 1: Material properties used for the finite elements models [7].
This method was applied to optimize the mechanical and the geometrical properties of reinforcements for cement spacer.
Williams, Factors affecting the outcome of total shoulder arthroplasty.
Viceconti, Fracture properties of an acrylic bone cement.