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Online since: December 2024
Authors: R. Rathinam, P. Satishkumar, Omar B. Syed, C. Nithiyapathi, Prashant Kumar Gangwar, S. Nanthakumar
The research investigated the mechanical and thermal properties of composites reinforced with Banana fibre (BF) and Sisal fibre (SF).
Adding natural fibre to starch biopolymer can improve its mechanical and thermal properties, according to studies [10].
As was to be predicted, treating the surface of natural fibres with an alkaline solution changed their mechanical and physical properties by affecting their wettability.
Thermal Properties 2.4.1.
Damping factors of 0.054, 0.056, and 0.055 were achieved by the T-BF7SF3, T-BF5SF5, and T-BF3SF7, compared to treated hybrid composite.
Adding natural fibre to starch biopolymer can improve its mechanical and thermal properties, according to studies [10].
As was to be predicted, treating the surface of natural fibres with an alkaline solution changed their mechanical and physical properties by affecting their wettability.
Thermal Properties 2.4.1.
Damping factors of 0.054, 0.056, and 0.055 were achieved by the T-BF7SF3, T-BF5SF5, and T-BF3SF7, compared to treated hybrid composite.
An Experimental Investigation on Suitability of Using Sisal Fibers in Reinforced Concrete Composites
Online since: January 2022
Authors: John K. Makunza, G. Senthil Kumaran
Fiber reinforcement is widely used in construction engineering to improve the mechanical properties of concrete such as compressive and tensile strengths.
In the construction industry, strength, durability and cost are among the major factors for selecting the suitable construction materials.
This could affect the water cement ratio which is considered to be important factor in concrete strength.
The sisal fibers absorbs much water which is added during mixing, which in turn results in the reduction of water-cement ratio (W/C), which is a major factor affecting the concrete strength.
[3] Wycliffe Odegi Ngala, “Mechanical Properties of Sisal Fiber Reinforced Composites of Epoxy Resin and Rice Husk Ash Pozzolanic Cement”.
In the construction industry, strength, durability and cost are among the major factors for selecting the suitable construction materials.
This could affect the water cement ratio which is considered to be important factor in concrete strength.
The sisal fibers absorbs much water which is added during mixing, which in turn results in the reduction of water-cement ratio (W/C), which is a major factor affecting the concrete strength.
[3] Wycliffe Odegi Ngala, “Mechanical Properties of Sisal Fiber Reinforced Composites of Epoxy Resin and Rice Husk Ash Pozzolanic Cement”.
Online since: February 2012
Authors: Da Qian Sun, Hai Xuan Sun, Xin Zui Wang, Huan Cai Yin, Wen Bo Cheng
It is favorable to select a relative higher content of Al-10Sr addition to improve the mechanical properties of the spot welded magnesium alloy joints.
And the grains’ coarsening is very detrimenal to mechanical properties of spot welded magnesium alloy joint, which is attributed to epitaxial growth from the unmelt base metal.
The present work investigates the effect of the content of Al-10Sr on the microstructure and mechanical properties of resistance spot welded magnesium alloy joints.
Its purpose was to better understand the mechanism of the inoculation on the nugget and provide some foundation for improving mechanical properties of the magnesium alloy joints.
It is favorable to select relatively high amount of Al-10Sr addition for improving mechanical properties of spot welded magnesium joint.
And the grains’ coarsening is very detrimenal to mechanical properties of spot welded magnesium alloy joint, which is attributed to epitaxial growth from the unmelt base metal.
The present work investigates the effect of the content of Al-10Sr on the microstructure and mechanical properties of resistance spot welded magnesium alloy joints.
Its purpose was to better understand the mechanism of the inoculation on the nugget and provide some foundation for improving mechanical properties of the magnesium alloy joints.
It is favorable to select relatively high amount of Al-10Sr addition for improving mechanical properties of spot welded magnesium joint.
Online since: January 2006
Authors: Han Dong Yan, Guo Hui Huang
The main factors affecting mechanics properties and pervious coefficient of pervious concrete
prepared by recycled aggregate were analyzed systematically in the paper.
Table 1 Physical and mechanical properties of recycled aggregate with the grain size range of (5~31.5mm) Apparent density [kg/m 3] Packing density [kg/m 3] Void Ratio [ %] Water absorption Ratio [ %] Crushing value [ %] 2550 1410 45 3.7 21.3 Experimental Methods Study on the Factors Influencing Mechanical Properties and Pervious Coefficient of Pervious Concrete with Recycled Aggregate.
The main factors that may influence mechanical properties and pervious coefficient of pervious concrete is aggregate to cement ratio (A/C), sand to aggregate ratio (S/A)and water to cement ratio (W/C) through analyzing the design theory of mix proportion of concrete.
The mix proportion parameters and properties of the road brick specimens were presented in Table 6.
·Theory analyses and test results indicated that the main factors on mechanical properties and pervious coefficient of pervious concrete with recycled aggregate were aggregate to cement ratio, sand to aggregate ratio and water to cement ratio.
Table 1 Physical and mechanical properties of recycled aggregate with the grain size range of (5~31.5mm) Apparent density [kg/m 3] Packing density [kg/m 3] Void Ratio [ %] Water absorption Ratio [ %] Crushing value [ %] 2550 1410 45 3.7 21.3 Experimental Methods Study on the Factors Influencing Mechanical Properties and Pervious Coefficient of Pervious Concrete with Recycled Aggregate.
The main factors that may influence mechanical properties and pervious coefficient of pervious concrete is aggregate to cement ratio (A/C), sand to aggregate ratio (S/A)and water to cement ratio (W/C) through analyzing the design theory of mix proportion of concrete.
The mix proportion parameters and properties of the road brick specimens were presented in Table 6.
·Theory analyses and test results indicated that the main factors on mechanical properties and pervious coefficient of pervious concrete with recycled aggregate were aggregate to cement ratio, sand to aggregate ratio and water to cement ratio.
Online since: January 2013
Authors: Heng An Wu, Zhi Luo, Xiao Long Wang, Hong Jie Jing
Thermal residual stress is one of the most important factors that affect the mechanical properties of composite materials.
The longitudinal stress on the interface between matrix and fiber is the main factor resulting in debonding failure of composites.
Introduction Fiber-reinforced composites are widely used in aircraft structures [1-3], because it has a lot of unique properties, such as high modulus, light-weight, high failure strength, low creep and good performance at elevated temperature [4].
Among the factors that affect the mechanical performances of composites, thermal residual stress, produced by the curing and cooling process, is a very important one.
Fig.1 (a) Geometry model (b) Cross-section of a quarter Fig.2 Radial stress distribution at the fiber surface of the unit-cell (c) Three-dimensional finite element model (d) the path investigated The matrix is modeled as an isotropic linear material, whose thermal properties and mechanical properties are temperature dependent.
The longitudinal stress on the interface between matrix and fiber is the main factor resulting in debonding failure of composites.
Introduction Fiber-reinforced composites are widely used in aircraft structures [1-3], because it has a lot of unique properties, such as high modulus, light-weight, high failure strength, low creep and good performance at elevated temperature [4].
Among the factors that affect the mechanical performances of composites, thermal residual stress, produced by the curing and cooling process, is a very important one.
Fig.1 (a) Geometry model (b) Cross-section of a quarter Fig.2 Radial stress distribution at the fiber surface of the unit-cell (c) Three-dimensional finite element model (d) the path investigated The matrix is modeled as an isotropic linear material, whose thermal properties and mechanical properties are temperature dependent.
Online since: October 2010
Authors: Huai An Yi, Xiao Gang Qiu
It has studied the influence of many factors on the parts forming such as blank size, blank holder force(BHF), the material parameter and so on.
The calculating program of other factors is shown in Table 3.
Factors affecting the calculation of the program level Factors BHF/KN Blank size 1 100 0.23 1.60 Quadrilateral material 2 140 0.25 1.90 To open a technology incision 3 180 0.27 2.15 To open two technology incision 4 220 0.29 2.40 / Finite element calculation results and analysis Effect of drawbead's geometric parameters on the resistance.
The influence of the BHF Effect of material properties on the forming.
According to calculations, the best material properties parameters to meet the part smooth forming are³0.25 and ³2.15.
The calculating program of other factors is shown in Table 3.
Factors affecting the calculation of the program level Factors BHF/KN Blank size 1 100 0.23 1.60 Quadrilateral material 2 140 0.25 1.90 To open a technology incision 3 180 0.27 2.15 To open two technology incision 4 220 0.29 2.40 / Finite element calculation results and analysis Effect of drawbead's geometric parameters on the resistance.
The influence of the BHF Effect of material properties on the forming.
According to calculations, the best material properties parameters to meet the part smooth forming are³0.25 and ³2.15.
Online since: February 2020
Authors: Bankim Chandra Ray, Rajesh Kumar Prusty, Dinesh Kumar Rathore
Laminated FRP composites exhibit superior in-plane mechanical properties, which are governed by the properties of the fibre phase.
However, the extent of reduction in mechanical properties was found to be significantly higher for CNF-GE composite than control GE composite.
This higher loss in mechanical properties was attributed to the increased tensile thermal stress in the interfacial polymer promoting interfacial slippage.
Ye, Cryogenic properties of SiO2/epoxy nanocomposites, Cryogenics. 45 (2005) 450–454
Eisenberg, Dynamic mechanical study of the factors affecting the two glass transition behavior of filled polymers.
However, the extent of reduction in mechanical properties was found to be significantly higher for CNF-GE composite than control GE composite.
This higher loss in mechanical properties was attributed to the increased tensile thermal stress in the interfacial polymer promoting interfacial slippage.
Ye, Cryogenic properties of SiO2/epoxy nanocomposites, Cryogenics. 45 (2005) 450–454
Eisenberg, Dynamic mechanical study of the factors affecting the two glass transition behavior of filled polymers.
Online since: October 2010
Authors: Wen Zhuang Lu, Dun Wen Zuo, Jia Jing Yuan, Feng Xu, L.J. Ma
The super mechanical properties have made NCD film to be an effective way to improve the resistance performance of the ceramic bearing and extended its life.
Factors such as substrate material, thickness of NCD coating, load and interlayer material which affect the shear stress distribution of NCD coating on bearing ball were investigated.
In this paper, factors such as substrate material, thickness of NCD coating, load and interlayer material which may affect the distribution of the contact stress were investigated, with a view to search the optimized assembly for NCD coated roll ball.
The mechanical properties of the models were presented in Table.1.
The interlayer is a thin layer formed in the initial period of CVD process and mechanical properties can be various.
Factors such as substrate material, thickness of NCD coating, load and interlayer material which affect the shear stress distribution of NCD coating on bearing ball were investigated.
In this paper, factors such as substrate material, thickness of NCD coating, load and interlayer material which may affect the distribution of the contact stress were investigated, with a view to search the optimized assembly for NCD coated roll ball.
The mechanical properties of the models were presented in Table.1.
The interlayer is a thin layer formed in the initial period of CVD process and mechanical properties can be various.
Online since: July 2022
Authors: Gianluca Buffa, Livan Fratini, Gaetano Pollara, Dina Palmeri
Titanium alloy Ti6Al4V is one of the most utilized alloys in the field of additive manufacturing due to the excellent combination of mechanical properties, density and good corrosion behavior.
Qu, Effect of Build Orientation on Mechanical Properties and Microstructure of Ti-6Al-4V Manufactured by Selective Laser Melting, Metall.
Tuck, Effect of the build orientation on the mechanical properties and fracture modes of SLM Ti-6Al-4V, Mater.
Eshraghi, Effect of Build Orientation on the Microstructure and Mechanical Properties of Selective Laser-Melted Ti-6Al-4V Alloy, J.
Fratini, Sample building orientation effect on porosity and mechanical properties in Selective Laser Melting of Ti6Al4V titanium alloy, Mater.
Qu, Effect of Build Orientation on Mechanical Properties and Microstructure of Ti-6Al-4V Manufactured by Selective Laser Melting, Metall.
Tuck, Effect of the build orientation on the mechanical properties and fracture modes of SLM Ti-6Al-4V, Mater.
Eshraghi, Effect of Build Orientation on the Microstructure and Mechanical Properties of Selective Laser-Melted Ti-6Al-4V Alloy, J.
Fratini, Sample building orientation effect on porosity and mechanical properties in Selective Laser Melting of Ti6Al4V titanium alloy, Mater.
Online since: January 2012
Authors: Murat Aydin, Yakup Heyal
Abstract
The mechanical properties mainly tensile properties, impact toughness and high-cycle fatigue properties, of two-phase Al-20Zn alloy subjected to severe plastic deformation (SPD) via equal-channel angular extrusion (ECAE) using route A up to 2 passes were studied.
Unfortunately, their mechanical properties are still inadequate for many engineering applications particularly in as-cast condition.
Mechanical properties and deformation behavior of ECAE processed Al-20Zn alloy were affected strongly by the number of passes.
Table 1.Mechanical properties of as-cast and ECAE processed Al-20Zn alloy obtained by hardness, tensile and charpy tests.
It is well known that these factors have considerable effect on mechanical properties especially the fatigue performance of metals and alloys [6].
Unfortunately, their mechanical properties are still inadequate for many engineering applications particularly in as-cast condition.
Mechanical properties and deformation behavior of ECAE processed Al-20Zn alloy were affected strongly by the number of passes.
Table 1.Mechanical properties of as-cast and ECAE processed Al-20Zn alloy obtained by hardness, tensile and charpy tests.
It is well known that these factors have considerable effect on mechanical properties especially the fatigue performance of metals and alloys [6].