Characterising the brake blocks of a freight rail container wagon
- Akinlabi, Esther Titilayo, Sanusi, Kazeem O., Mamabolo, Masemenya
- Authors: Akinlabi, Esther Titilayo , Sanusi, Kazeem O. , Mamabolo, Masemenya
- Date: 2016
- Subjects: Brakes block , Friction , Hardness test , Test , Wagon , Wear test , Microstructure
- Language: English
- Type: Conference proceedings
- Identifier: http://hdl.handle.net/10210/93235 , uj:20320 , Citation: Akinlabi, E.T., Sanusi, K.O. & Mamabolo, M. 2016. Characterising the brake blocks of a freight rail container wagon.
- Description: Abstract: Society has become dependent on trains to provide the means for freight and transport services and with so many people being dependent on these services safety must be taken as the utmost priority. The aim of this research project is to characterise the Brake block samples of a Freight Rail container wagon using tribological properties for the effect of friction and wear, hardness tests to investigate the mechanical property and microstructure analysis and material composition in different environmental conditions using Scanning Electron Microscopy (SEM), Energy Dispersive Spectrometry (EDS.
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- Authors: Akinlabi, Esther Titilayo , Sanusi, Kazeem O. , Mamabolo, Masemenya
- Date: 2016
- Subjects: Brakes block , Friction , Hardness test , Test , Wagon , Wear test , Microstructure
- Language: English
- Type: Conference proceedings
- Identifier: http://hdl.handle.net/10210/93235 , uj:20320 , Citation: Akinlabi, E.T., Sanusi, K.O. & Mamabolo, M. 2016. Characterising the brake blocks of a freight rail container wagon.
- Description: Abstract: Society has become dependent on trains to provide the means for freight and transport services and with so many people being dependent on these services safety must be taken as the utmost priority. The aim of this research project is to characterise the Brake block samples of a Freight Rail container wagon using tribological properties for the effect of friction and wear, hardness tests to investigate the mechanical property and microstructure analysis and material composition in different environmental conditions using Scanning Electron Microscopy (SEM), Energy Dispersive Spectrometry (EDS.
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Computational modeling of a smart impeller actuated by shape memory alloys
- Sanusi, Kazeem O., Ayodele, Olukayode L., Fuhnwi, Godwin
- Authors: Sanusi, Kazeem O. , Ayodele, Olukayode L. , Fuhnwi, Godwin
- Date: 2016
- Subjects: Smart , Shape memory alloy , Pumps , Impeller , Angle of attack , Efd , Nickel-titanium
- Language: English
- Type: Conference proceedings
- Identifier: http://hdl.handle.net/10210/93252 , uj:20323 , Citation: Sanusi, K.O., Ayodele, O.L. & Fuhnwi, G. 2016. Computational modeling of a smart impeller actuated by shape memory alloys.
- Description: Abstract: This paper demonstrates numerical investigations using analytical algorithms and advanced computer simulation package to study the performance of a pumping system and the best angle of attack for a Shape Memory Impeller. Comparing the analytical algorithm and simulation, it shows that the best angle of attack is 12 degree at the outlet angle with respect to the inlet angle. Increasing the angle of attack from 35 degree to 45 degree at the outlet there is huge increase in flow rate by 63.47% and slight decrease in the impeller Torque from 35 degrees to 42 degrees by 0.72%. This study successfully conceptualised a Shape Memory Smart Centrifugal Impeller that will increase fluid flow rate through a given system if the fluid temperature increases above a given transition temperature using NiTi Shape Memory Alloys was achieved.
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- Authors: Sanusi, Kazeem O. , Ayodele, Olukayode L. , Fuhnwi, Godwin
- Date: 2016
- Subjects: Smart , Shape memory alloy , Pumps , Impeller , Angle of attack , Efd , Nickel-titanium
- Language: English
- Type: Conference proceedings
- Identifier: http://hdl.handle.net/10210/93252 , uj:20323 , Citation: Sanusi, K.O., Ayodele, O.L. & Fuhnwi, G. 2016. Computational modeling of a smart impeller actuated by shape memory alloys.
- Description: Abstract: This paper demonstrates numerical investigations using analytical algorithms and advanced computer simulation package to study the performance of a pumping system and the best angle of attack for a Shape Memory Impeller. Comparing the analytical algorithm and simulation, it shows that the best angle of attack is 12 degree at the outlet angle with respect to the inlet angle. Increasing the angle of attack from 35 degree to 45 degree at the outlet there is huge increase in flow rate by 63.47% and slight decrease in the impeller Torque from 35 degrees to 42 degrees by 0.72%. This study successfully conceptualised a Shape Memory Smart Centrifugal Impeller that will increase fluid flow rate through a given system if the fluid temperature increases above a given transition temperature using NiTi Shape Memory Alloys was achieved.
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Effect of heat treatment on microstructure and mechanical properties of magnesium alloy
- Sanusi, Kazeem O., Madushele, Nkosinathi, Akinlabi, Esther Titilayo
- Authors: Sanusi, Kazeem O. , Madushele, Nkosinathi , Akinlabi, Esther Titilayo
- Date: 2018
- Subjects: Magnesium , Heat treatment , Microstructure
- Language: English
- Type: Conference proceedings
- Identifier: http://hdl.handle.net/10210/260614 , uj:27447 , Citation: Sanusi, K.O., Madushele, N. & Akinlabi, E.T. 2018. Effect of heat treatment on microstructure and mechanical properties of magnesium alloy.
- Description: Abstract: In this research study, the effect of heat treatment on mechanical properties, and microstructure characteristics of magnesium alloy with 99.94 % magnesium was studied. The heat treatment of samples was conducted at 150 ⁰C, 300 ⁰C, and 450 ⁰C for 2 hours. The samples were characterized by microstructure characterization using optical microscope (OEM) by observing the evolution of the microstructure of the heat-treated magnesium alloy. The hardness test was done on the surface of each sample using the load of 50 N to show the effect of heat treatment on the cross-section surface of magnesium alloy. From the results, the average grain sizes of the materials are different due to the different heat treatment and cooling rate of the materials.it is found that the hardness of the surface of the samples is higher at the edges of the samples than in the middle. The changes in average hardness of magnesium with the increase in temperature is due to an increase in grain size.
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- Authors: Sanusi, Kazeem O. , Madushele, Nkosinathi , Akinlabi, Esther Titilayo
- Date: 2018
- Subjects: Magnesium , Heat treatment , Microstructure
- Language: English
- Type: Conference proceedings
- Identifier: http://hdl.handle.net/10210/260614 , uj:27447 , Citation: Sanusi, K.O., Madushele, N. & Akinlabi, E.T. 2018. Effect of heat treatment on microstructure and mechanical properties of magnesium alloy.
- Description: Abstract: In this research study, the effect of heat treatment on mechanical properties, and microstructure characteristics of magnesium alloy with 99.94 % magnesium was studied. The heat treatment of samples was conducted at 150 ⁰C, 300 ⁰C, and 450 ⁰C for 2 hours. The samples were characterized by microstructure characterization using optical microscope (OEM) by observing the evolution of the microstructure of the heat-treated magnesium alloy. The hardness test was done on the surface of each sample using the load of 50 N to show the effect of heat treatment on the cross-section surface of magnesium alloy. From the results, the average grain sizes of the materials are different due to the different heat treatment and cooling rate of the materials.it is found that the hardness of the surface of the samples is higher at the edges of the samples than in the middle. The changes in average hardness of magnesium with the increase in temperature is due to an increase in grain size.
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Microstructural characterization and hardness properties of magnesium alloy processed by high pressure torsion
- Sanusi, Kazeem O., Madushele, Nkosinathi, Akinlabi, Esther Titilayo
- Authors: Sanusi, Kazeem O. , Madushele, Nkosinathi , Akinlabi, Esther Titilayo
- Date: 2018
- Subjects: High pressure torsion , Pure magnesium , Microstructure
- Language: English
- Type: Conference proceedings
- Identifier: http://hdl.handle.net/10210/260622 , uj:27448 , Citation: Sanusi, K.O., Madushele, N. & Akinlabi, E.T. 2018. Microstructural characterization and hardness properties of magnesium alloy processed by high pressure torsion.
- Description: Abstract: Magnesium and magnesium alloys are the lightest of all metal used for structural construction. This property of magnesium made it to be the most used material in the automobile manufacturing industries and in aerospace as well as in other industries. This research is based on the process improvement of pure commensally magnesium alloy (Mg 99.94%) using high pressure torsion (HPT) process. The investigation was based on the measurement of hardness properties and microstructural characterization of magnesium alloy processed by high pressure torsion (HPT).
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- Authors: Sanusi, Kazeem O. , Madushele, Nkosinathi , Akinlabi, Esther Titilayo
- Date: 2018
- Subjects: High pressure torsion , Pure magnesium , Microstructure
- Language: English
- Type: Conference proceedings
- Identifier: http://hdl.handle.net/10210/260622 , uj:27448 , Citation: Sanusi, K.O., Madushele, N. & Akinlabi, E.T. 2018. Microstructural characterization and hardness properties of magnesium alloy processed by high pressure torsion.
- Description: Abstract: Magnesium and magnesium alloys are the lightest of all metal used for structural construction. This property of magnesium made it to be the most used material in the automobile manufacturing industries and in aerospace as well as in other industries. This research is based on the process improvement of pure commensally magnesium alloy (Mg 99.94%) using high pressure torsion (HPT) process. The investigation was based on the measurement of hardness properties and microstructural characterization of magnesium alloy processed by high pressure torsion (HPT).
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Microstructure and mechanical properties of ultra-fine grained copper processed by equal channel angular pressing technique
- Sanusi, Kazeem O., Afolabi, Ayo S., Muzenda, Edison
- Authors: Sanusi, Kazeem O. , Afolabi, Ayo S. , Muzenda, Edison
- Date: 2014
- Subjects: Tensile properties , Equal channel angular pressing technique , Grain refinement , Ultra-fine grained copper
- Type: Article
- Identifier: uj:5005 , ISSN 2078-0966 , http://hdl.handle.net/10210/13145
- Description: The equal channel angular pressing (ECAP) technique is now recognised for achieving very significant grain refinement of ultra-fine grained materials which, at present produce unique mechanical properties. This study reports the results of the tensile tests and the microstructural analysis carried out on the specimens of ultra-fine grained (UFG) copper processed by ECAP technique at room temperature using a die with a 126o between the die channels. The copper samples used in this work were subjected to six and twelve passes during the ECAP processing. Tensile tests were conducted for samples cut out in two different directions; in the parallel and perpendicular direction at room temperature to evaluate the mechanical properties after the ECAP at these two directions. The microstructural characterization was carried out using optical electron microscope (OEM) and scanning electronic microscope (SEM). The results show ECAP technique introducing significant grain refinement and produced ultrafine grains in copper and there is a potential for achieving high ductility in the copper alloy after processing. The tested sample is characterized by significant differences of strength properties depending on the direction.
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- Authors: Sanusi, Kazeem O. , Afolabi, Ayo S. , Muzenda, Edison
- Date: 2014
- Subjects: Tensile properties , Equal channel angular pressing technique , Grain refinement , Ultra-fine grained copper
- Type: Article
- Identifier: uj:5005 , ISSN 2078-0966 , http://hdl.handle.net/10210/13145
- Description: The equal channel angular pressing (ECAP) technique is now recognised for achieving very significant grain refinement of ultra-fine grained materials which, at present produce unique mechanical properties. This study reports the results of the tensile tests and the microstructural analysis carried out on the specimens of ultra-fine grained (UFG) copper processed by ECAP technique at room temperature using a die with a 126o between the die channels. The copper samples used in this work were subjected to six and twelve passes during the ECAP processing. Tensile tests were conducted for samples cut out in two different directions; in the parallel and perpendicular direction at room temperature to evaluate the mechanical properties after the ECAP at these two directions. The microstructural characterization was carried out using optical electron microscope (OEM) and scanning electronic microscope (SEM). The results show ECAP technique introducing significant grain refinement and produced ultrafine grains in copper and there is a potential for achieving high ductility in the copper alloy after processing. The tested sample is characterized by significant differences of strength properties depending on the direction.
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The effects of microstructural evolution and mechanical behaviour of unalloyed medium carbon steel (EN8 Steel) after subsequent heat treatment
- Sanusi, Kazeem O., Moleejane, Cullen M., Ayodele, Olukayode L., Oliverm Graeme J.
- Authors: Sanusi, Kazeem O. , Moleejane, Cullen M. , Ayodele, Olukayode L. , Oliverm Graeme J.
- Date: 2015
- Subjects: Carbon steel - Mechanical properties , Carbon steel - Heat treatment , Steel - Testing
- Language: English
- Type: Journal article
- Identifier: http://hdl.handle.net/10210/55746 , uj:16307 , Sanusi, K.O. et al. 2015. The effects of microstructural evolution and mechanical behaviour of unalloyed medium carbon steel (EN8 Steel) after subsequent heat treatment. Transactions on Engineering Technologies. DOI: 10.1007/978-94-017-7236-5_37
- Description: Abstract: The effect of microstructural evolution on mechanical properties of unalloyed medium carbon (EN8) steel with emphasis on the effects of grain size within solid phase mixtures and the mechanical response of the material is investigated and reported. Specimens with a range of microstructures (grain size and phase) were prepared by heat treatment. The microstructures were carefully characterized using both optical electronic microscope (OEM) and scanning electron microscope (SEM) and the mechanical properties were studied using tensile and hardness tests. The results indicated that structural parameter that directly controls the yield strength, the ultimate tensile strength and elongation at failure have some influence (direct or indirect) on the stress flow and formability of the material.
- Full Text: false
- Authors: Sanusi, Kazeem O. , Moleejane, Cullen M. , Ayodele, Olukayode L. , Oliverm Graeme J.
- Date: 2015
- Subjects: Carbon steel - Mechanical properties , Carbon steel - Heat treatment , Steel - Testing
- Language: English
- Type: Journal article
- Identifier: http://hdl.handle.net/10210/55746 , uj:16307 , Sanusi, K.O. et al. 2015. The effects of microstructural evolution and mechanical behaviour of unalloyed medium carbon steel (EN8 Steel) after subsequent heat treatment. Transactions on Engineering Technologies. DOI: 10.1007/978-94-017-7236-5_37
- Description: Abstract: The effect of microstructural evolution on mechanical properties of unalloyed medium carbon (EN8) steel with emphasis on the effects of grain size within solid phase mixtures and the mechanical response of the material is investigated and reported. Specimens with a range of microstructures (grain size and phase) were prepared by heat treatment. The microstructures were carefully characterized using both optical electronic microscope (OEM) and scanning electron microscope (SEM) and the mechanical properties were studied using tensile and hardness tests. The results indicated that structural parameter that directly controls the yield strength, the ultimate tensile strength and elongation at failure have some influence (direct or indirect) on the stress flow and formability of the material.
- Full Text: false
Wear and hardness properties of surface modification of copper alloy processed by friction stir process
- Sanusi, Kazeem O., Akinlabi, Esther Titilayo
- Authors: Sanusi, Kazeem O. , Akinlabi, Esther Titilayo
- Date: 2016
- Subjects: Severe plastic deformation , Friction stir processing , Copper
- Language: English
- Type: Conference proceedings
- Identifier: http://hdl.handle.net/10210/215024 , uj:21354 , Citation: Sanusi, K.O & Akinlabi, E.T. 2016. Wear and hardness properties of surface modification of copper alloy processed by friction stir process.
- Description: Abstract: In this work, FSP was used to refine the microstructure of copper alloy using various parameters. The influence of the tool rotation and traverse speeds on the microstructural and wear of the processed copper alloy was analyzed. Dry sliding tests were conducted to compare the wear behavior of the as-received copper alloy and the copper alloy processed using FSP.
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- Authors: Sanusi, Kazeem O. , Akinlabi, Esther Titilayo
- Date: 2016
- Subjects: Severe plastic deformation , Friction stir processing , Copper
- Language: English
- Type: Conference proceedings
- Identifier: http://hdl.handle.net/10210/215024 , uj:21354 , Citation: Sanusi, K.O & Akinlabi, E.T. 2016. Wear and hardness properties of surface modification of copper alloy processed by friction stir process.
- Description: Abstract: In this work, FSP was used to refine the microstructure of copper alloy using various parameters. The influence of the tool rotation and traverse speeds on the microstructural and wear of the processed copper alloy was analyzed. Dry sliding tests were conducted to compare the wear behavior of the as-received copper alloy and the copper alloy processed using FSP.
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