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Online since: August 2013
Authors: Uğurhan Akyüz, Barış Erdil, İsmail Özgür Yaman
In this study, parameters affecting the mechanical properties of FRP-confined cylindrical and prismatic concrete columns were studied via experimental data, which were collected after an extensive literature review.
Experimental evaluation on FRP-confined concrete specimens has shown that their stress-strain behavior is significantly affected by many parameters such as, concrete strength and mechanical properties of FRP.
In this study, firstly, parameters affecting the mechanical properties and stress-strain behavior of FRP-confined concrete are discussed, which were collected after an extensive literature review.
Since strength of a confined concrete specimen is affected by sustained stress level, environmental exposure and temperature changes, those parameters were taken into account by correction factors.
From these parameters, unconfined concrete strength, number of FRP layers (FRP thickness), mechanical properties of FRP material and the corner radius in prismatic specimens were found to be more influential on the confinement effectiveness.
Experimental evaluation on FRP-confined concrete specimens has shown that their stress-strain behavior is significantly affected by many parameters such as, concrete strength and mechanical properties of FRP.
In this study, firstly, parameters affecting the mechanical properties and stress-strain behavior of FRP-confined concrete are discussed, which were collected after an extensive literature review.
Since strength of a confined concrete specimen is affected by sustained stress level, environmental exposure and temperature changes, those parameters were taken into account by correction factors.
From these parameters, unconfined concrete strength, number of FRP layers (FRP thickness), mechanical properties of FRP material and the corner radius in prismatic specimens were found to be more influential on the confinement effectiveness.
Online since: April 2024
Authors: Gottmyers Melwyn J., P. Srinath, C. Bhagyanathan, G. Sathiya Seelan, C. Santhosh Kumar
However, the properties of recycled aluminium alloys can be influenced by various factors, including impurities, alloying elements, and processing conditions.
The research explores the structural factors and conduction process, particularly in the context of high-frequency applications.
This dual-phase structure likely impacted the mechanical properties in a complex manner
Microstructural analysis and mechanical properties of a hybrid Al/Fe2O3/Ag nano-composite.
Ma, Effects of Mn addition on the microstructure and mechanical properties of Al–Cu–Mg–Si alloy.
The research explores the structural factors and conduction process, particularly in the context of high-frequency applications.
This dual-phase structure likely impacted the mechanical properties in a complex manner
Microstructural analysis and mechanical properties of a hybrid Al/Fe2O3/Ag nano-composite.
Ma, Effects of Mn addition on the microstructure and mechanical properties of Al–Cu–Mg–Si alloy.
Online since: July 2011
Authors: Mirosław Bonek, Leszek Adam Dobrzański, Grzegorz Matula
Effect of laser surface melting on structure and properties of a high speed tool steel
Mirosław Bonek a, Grzegorz Matula b, Leszek A.
The structural mechanism was determined of surface layers development, effect was studied of alloying parameters, gas protection method, and thickness of paste layer applied onto the steel surface on structure refinement and influence of these factors on the mechanical properties of surface layer, and especially on its hardness, abrasive wear resistance, and roughness.
The powder metallurgy and especially employment of newer and newer forming methods, as well as modernisation of those existing so far, have led to the significant lowering of the manufacturing costs maintain very high mechanical properties of the sintered materials.
This phenomenon is the reason for the super-fast phase transformations affecting the structural mechanism of forming the surface layers subjected to laser treatment.
The best mechanical properties, including hardness and microhardness, were obtained for specimen alloyed with the 1,7 kW laser.
The structural mechanism was determined of surface layers development, effect was studied of alloying parameters, gas protection method, and thickness of paste layer applied onto the steel surface on structure refinement and influence of these factors on the mechanical properties of surface layer, and especially on its hardness, abrasive wear resistance, and roughness.
The powder metallurgy and especially employment of newer and newer forming methods, as well as modernisation of those existing so far, have led to the significant lowering of the manufacturing costs maintain very high mechanical properties of the sintered materials.
This phenomenon is the reason for the super-fast phase transformations affecting the structural mechanism of forming the surface layers subjected to laser treatment.
The best mechanical properties, including hardness and microhardness, were obtained for specimen alloyed with the 1,7 kW laser.
Online since: May 2014
Authors: Fabrizio Quadrini
Mechanical, dynamic mechanical and shape recovery tests were carried out to show the properties of the composite materials and structures.
Results confirm the ability of this class of materials to easily change their shape without affecting the mechanical stiffness of the recovered structures.
Introduction Shape memory composites (SMCs) are attractive materials as they combine typical mechanical and functional properties of composites with shape memory properties.
Dynamic mechanical analysis (DMA) has been used to investigate visco-elastic properties of a SMC samples.
In order to increase mechanical properties of SMCs, parts without reinforcing fibers should be avoided.
Results confirm the ability of this class of materials to easily change their shape without affecting the mechanical stiffness of the recovered structures.
Introduction Shape memory composites (SMCs) are attractive materials as they combine typical mechanical and functional properties of composites with shape memory properties.
Dynamic mechanical analysis (DMA) has been used to investigate visco-elastic properties of a SMC samples.
In order to increase mechanical properties of SMCs, parts without reinforcing fibers should be avoided.
Online since: September 2014
Authors: Zhao Zhong Zhou, Ju Long Yuan, Kai Ping Feng
Simulation results showed that the main factors affecting the wear of the fixed soft abrasive film were pressure and speed, which mainly affected the normal stress and the tangential stress respectively.
Micromechanics Material Parameters The discrete element method is used to simulation analysis as the discrete element model can reflect the dynamic mechanical properties of macroscopic scale through microcosmic-scale interactions between particles.
The macroscopic mechanical parameters not only concerned with the abrasive strength, the abrasive size, the abrasive shape and the distribution of the abrasive, but also concerned with the deformation and strength properties of abrasives and binder which can be measured by physical tests.
a) 0.1 ms b) 0.25 ms c) 0.45 ms d) 0.65 ms e) 1.0 ms Fig. 2 The surface morphology change in polishing process simulation Influence on Surface Topography As can be seen from the whole simulation process, the change of surface morphology is mainly affected by 2 factors: the tangential force and normal pressure.
Pressure affects surface stress, and relative velocity affects the tangential stress.
Micromechanics Material Parameters The discrete element method is used to simulation analysis as the discrete element model can reflect the dynamic mechanical properties of macroscopic scale through microcosmic-scale interactions between particles.
The macroscopic mechanical parameters not only concerned with the abrasive strength, the abrasive size, the abrasive shape and the distribution of the abrasive, but also concerned with the deformation and strength properties of abrasives and binder which can be measured by physical tests.
a) 0.1 ms b) 0.25 ms c) 0.45 ms d) 0.65 ms e) 1.0 ms Fig. 2 The surface morphology change in polishing process simulation Influence on Surface Topography As can be seen from the whole simulation process, the change of surface morphology is mainly affected by 2 factors: the tangential force and normal pressure.
Pressure affects surface stress, and relative velocity affects the tangential stress.
Online since: April 2019
Authors: Martina Kusa, Marcela Bučányová, Miriam Matúšová
One of the factors that greatly affects the homogeneity of the mixture is the surface treatment of the guides that are designed to transport the granulate and it is important to take care of those lines.
Major factors include productivity, reliability, service life, labour cost, repairs, additional mechanisms and maintenance [1].
Is defined by ISO 9000: 2000 as a complex property of an object (Fig. 1): Reliability - is defined by the standard as a generic term used to describe the ability of an object to work and the factors that affect it.
Determines the typical properties of plastics.
They serve to modify the properties of plastics.
Major factors include productivity, reliability, service life, labour cost, repairs, additional mechanisms and maintenance [1].
Is defined by ISO 9000: 2000 as a complex property of an object (Fig. 1): Reliability - is defined by the standard as a generic term used to describe the ability of an object to work and the factors that affect it.
Determines the typical properties of plastics.
They serve to modify the properties of plastics.
Online since: November 2021
Authors: Li Li Zhang, Ji Liang Ci, Yan Ru Wang, Hua Qiong Wang, Zeng Hua Gao
These parameters can accurately affect the tensile properties of alumina fiber bundles.
Due to its excellent high temperature mechanical properties, chemical corrosion resistance, low thermal conductivity and electrical insulation, it can be widely used in alumina fiber reinforced aluminum matrix composites, it can be used in many fields such as sound insulation, aerospace, automobile, etc.
The presence of defects within the continuous alumina fibers [6], coupled with fluctuations in the production process during their preparation[7], has led to differences in their mechanical properties.
Properties and applications of alumina fibers.
[7] JOHNSON J W.Factors affecting the tensile breaking strength of carbon graphite fibers[J].
Due to its excellent high temperature mechanical properties, chemical corrosion resistance, low thermal conductivity and electrical insulation, it can be widely used in alumina fiber reinforced aluminum matrix composites, it can be used in many fields such as sound insulation, aerospace, automobile, etc.
The presence of defects within the continuous alumina fibers [6], coupled with fluctuations in the production process during their preparation[7], has led to differences in their mechanical properties.
Properties and applications of alumina fibers.
[7] JOHNSON J W.Factors affecting the tensile breaking strength of carbon graphite fibers[J].
Online since: December 2014
Authors: Jatinder Kumar, Ravinder Kataria
The machining of WC-Co is also affected by various factors such as the cobalt content and grain size and presence of other carbides.
In contrast to metallic alloys, each material retains its separate chemical, physical, and mechanical properties.
Properties and applications of WC-Co composite materials Cemented tungsten carbide has excellent mechanical properties such as high strength, high hardness, and high toughness.
Taper angle, Pulse-on-time and Pulse-off-time were found to be the most significant factors affecting the MRR.
Due to this, changes in their mechanical properties occur in the EDM machined material.
In contrast to metallic alloys, each material retains its separate chemical, physical, and mechanical properties.
Properties and applications of WC-Co composite materials Cemented tungsten carbide has excellent mechanical properties such as high strength, high hardness, and high toughness.
Taper angle, Pulse-on-time and Pulse-off-time were found to be the most significant factors affecting the MRR.
Due to this, changes in their mechanical properties occur in the EDM machined material.
Online since: March 2022
Authors: Montri Sangsuriyun, Sawinee Sangsuriyun
Effects of Cooling Conditions on Mechanical Properties and Wear Performance of JIS S45C Steel Coated by Wire Arc Spray
M.
This steel is of suitable properties, and its properties can be further improved [1].
The specimens' mechanical properties and wear resistance were then studied to determine the effects of cooling conditions on mechanical properties.
The tensile strength of SN, SCCW, SCCO, SCCS and SCCNT specimens was determined using Universal Testing Machine 2.5 KW to study the effects of cooling conditions on mechanical properties.
Research of [14] as the tribological properties of Co-Ni-P coatings the highest microhardness of 602 ± 15 HV selfsame Point 3-5 which were the areas between Nickel Aluminium coating layer and AISI S45C steel were the heat-affected zones (HAZ) exposed to heat up to 1700 °F.
This steel is of suitable properties, and its properties can be further improved [1].
The specimens' mechanical properties and wear resistance were then studied to determine the effects of cooling conditions on mechanical properties.
The tensile strength of SN, SCCW, SCCO, SCCS and SCCNT specimens was determined using Universal Testing Machine 2.5 KW to study the effects of cooling conditions on mechanical properties.
Research of [14] as the tribological properties of Co-Ni-P coatings the highest microhardness of 602 ± 15 HV selfsame Point 3-5 which were the areas between Nickel Aluminium coating layer and AISI S45C steel were the heat-affected zones (HAZ) exposed to heat up to 1700 °F.
Online since: October 2014
Authors: Ding Zhang, Kai Zhou, Hai Dong Wang
SIF was calculated using virtual crack closure technology and compared to evaluate effects of patch geometrical parameters on mechanical properties of repaired structure.
Patch geometrical parameters are crucial to composite patch adhesively bonded repair, which decides mechanical properties of repaired structure.
Properties of aluminum plate, adhesive and composite patch are shown in Table1-Table3.
Both factors make big bending normal stress on the unrepaired side when loading.
And then effect of patch geometrical parameters on mechanical properties of repaired structure is analyzed with virtual crack closure technology.
Patch geometrical parameters are crucial to composite patch adhesively bonded repair, which decides mechanical properties of repaired structure.
Properties of aluminum plate, adhesive and composite patch are shown in Table1-Table3.
Both factors make big bending normal stress on the unrepaired side when loading.
And then effect of patch geometrical parameters on mechanical properties of repaired structure is analyzed with virtual crack closure technology.