Pub Date : 2023-05-26DOI: 10.1109/ICMIMT59138.2023.10201134
Siviwe Mrausi, J. Trimble, O. Olabanji, I. Tlhabadira, I. Daniyan
There is a growing need to develop brake pads and brake discs for automobiles using materials from sustainable local resources. This is so because such resources can replace the asbestos brake pad which is not environmentally sustainable. This aim of this study is to investigate the thermal properties of locally sourced, cost effective materials for the development of brake disc and pads discs. The Abaqus tool explicit mode was used for the modelling and simulation of the designed components using various materials. The brake disc and brake pad components were designed separately and compiled into a single design. For the meshing, the Computer Aided Design (CAD) model was meshed into a Finite Element (FE) by applying the mesh module with a mesh interval of 0.2 mm and a mesh size of 2.2 mm. Thereafter, a comparative analysis of the simulation performance was performed in order to establish the performance effectiveness of the brake disk and brake pad of the various materials under the required service conditions. The findings of this study indicate that Al-MMC seems to be a good material for a disc and the Kevlar 29 brake pad compound seems to be a good material for the pad. Thus, this study can assist the automobile brake mechanism developers in the selection of the most suitable brake disc and pads that will meet the designed and service requirements.
{"title":"Computer Aided Design and Evaluation of the Thermal Properties of Automotive Brake Disc and Pad Produced from Locally Sourced Materials","authors":"Siviwe Mrausi, J. Trimble, O. Olabanji, I. Tlhabadira, I. Daniyan","doi":"10.1109/ICMIMT59138.2023.10201134","DOIUrl":"https://doi.org/10.1109/ICMIMT59138.2023.10201134","url":null,"abstract":"There is a growing need to develop brake pads and brake discs for automobiles using materials from sustainable local resources. This is so because such resources can replace the asbestos brake pad which is not environmentally sustainable. This aim of this study is to investigate the thermal properties of locally sourced, cost effective materials for the development of brake disc and pads discs. The Abaqus tool explicit mode was used for the modelling and simulation of the designed components using various materials. The brake disc and brake pad components were designed separately and compiled into a single design. For the meshing, the Computer Aided Design (CAD) model was meshed into a Finite Element (FE) by applying the mesh module with a mesh interval of 0.2 mm and a mesh size of 2.2 mm. Thereafter, a comparative analysis of the simulation performance was performed in order to establish the performance effectiveness of the brake disk and brake pad of the various materials under the required service conditions. The findings of this study indicate that Al-MMC seems to be a good material for a disc and the Kevlar 29 brake pad compound seems to be a good material for the pad. Thus, this study can assist the automobile brake mechanism developers in the selection of the most suitable brake disc and pads that will meet the designed and service requirements.","PeriodicalId":286146,"journal":{"name":"2023 14th International Conference on Mechanical and Intelligent Manufacturing Technologies (ICMIMT)","volume":"109 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-05-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134540191","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-05-26DOI: 10.1109/ICMIMT59138.2023.10200627
I. Daniyan, A. Adeodu, Felix Ale, Olugbenga Aderoba
Surface finish is a quality index and there are concerns about the machinability of titanium alloy to the required finish. In this study, the Response Surface Methodology (RSM) was employed to investigate the magnitude of the surface roughness during the turning operation of Ti6Al4V. Three process parameters were considered namely; the feed rate (0.25-0.5 mm/rev), depth of cut (0.3-0.75 mm) and the cutting speed (20-100 m/min). Taking the surface roughness as the response of the designed experiment, the results obtained indicated that the optimum range of the process which produced the least surface roughness (0.114 μm) were feed rate (0.25 mm/rev), depth of cut (0.75 mm) and cutting speed (100 m/min). In addition, the statistical analysis of the results obtained produced a predictive model for the computation of the surface roughness during Ti6Al4V turning operation. The outcome of this study may be helpful for the determination of the feasible range of process parameters during the turning operation of Ti6Al4V.
{"title":"Investigation of Surface Roughness of Titanium Alloy (Ti6Al4V) during Turning Operation Using the Response Surface Methodology","authors":"I. Daniyan, A. Adeodu, Felix Ale, Olugbenga Aderoba","doi":"10.1109/ICMIMT59138.2023.10200627","DOIUrl":"https://doi.org/10.1109/ICMIMT59138.2023.10200627","url":null,"abstract":"Surface finish is a quality index and there are concerns about the machinability of titanium alloy to the required finish. In this study, the Response Surface Methodology (RSM) was employed to investigate the magnitude of the surface roughness during the turning operation of Ti6Al4V. Three process parameters were considered namely; the feed rate (0.25-0.5 mm/rev), depth of cut (0.3-0.75 mm) and the cutting speed (20-100 m/min). Taking the surface roughness as the response of the designed experiment, the results obtained indicated that the optimum range of the process which produced the least surface roughness (0.114 μm) were feed rate (0.25 mm/rev), depth of cut (0.75 mm) and cutting speed (100 m/min). In addition, the statistical analysis of the results obtained produced a predictive model for the computation of the surface roughness during Ti6Al4V turning operation. The outcome of this study may be helpful for the determination of the feasible range of process parameters during the turning operation of Ti6Al4V.","PeriodicalId":286146,"journal":{"name":"2023 14th International Conference on Mechanical and Intelligent Manufacturing Technologies (ICMIMT)","volume":"110 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-05-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132368462","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-05-26DOI: 10.1109/ICMIMT59138.2023.10199565
I. Daniyan, O. Makinde, B. Ramatsetse, K. Mpofu, O. Adenuga, Rhulani Charles Saka
The need to localize the manufacturing of rail car in South Africa has prompted the need for the design and prototyping of various components of a rail car, with a view to expedite the revenue generation of the country and create job opportunities for the vibrant youths of the country. In light of this, this paper presents a detailed design and simulation of a mechanically-operated welding jig system, capable of effectively joining individual subcomponents of top bracket components of a rail car together. The welding jig system, capable of meeting the design requirements, was conceptualized and drawn using ANSYS Computer Aided Design (CAD) software. The results of the stress simulations on the top brackets to be welded, were carried out in the ANSYS environment. The results show that the jig can hold the workpiece without failure or workpiece distortion after the addition of the spacer support system to the side plates of the jig system. The stress induced with the addition of the spacer was found to reduce 15%. This implies that the addition of a spacer can minimise the stress induced in the workpiece due to the clamping force. The results of heat flux and thermal effect simulations on the top brackets, revealed that there was high penetration of heat on the majority of the top brackets surface during welding operations. However, the thermal effects of this welding operations had no effect on the quality of the individual components of the top brackets been joined together during the welding operation. This study adds to the understanding of the development of work holding systems and will assist the rail car manufacturing industries in their quest for component’s localization.
{"title":"Design and Structural Analysis of a Welding Jig for Part Family Assembly of the Top and Lower Brackets of a Railcar","authors":"I. Daniyan, O. Makinde, B. Ramatsetse, K. Mpofu, O. Adenuga, Rhulani Charles Saka","doi":"10.1109/ICMIMT59138.2023.10199565","DOIUrl":"https://doi.org/10.1109/ICMIMT59138.2023.10199565","url":null,"abstract":"The need to localize the manufacturing of rail car in South Africa has prompted the need for the design and prototyping of various components of a rail car, with a view to expedite the revenue generation of the country and create job opportunities for the vibrant youths of the country. In light of this, this paper presents a detailed design and simulation of a mechanically-operated welding jig system, capable of effectively joining individual subcomponents of top bracket components of a rail car together. The welding jig system, capable of meeting the design requirements, was conceptualized and drawn using ANSYS Computer Aided Design (CAD) software. The results of the stress simulations on the top brackets to be welded, were carried out in the ANSYS environment. The results show that the jig can hold the workpiece without failure or workpiece distortion after the addition of the spacer support system to the side plates of the jig system. The stress induced with the addition of the spacer was found to reduce 15%. This implies that the addition of a spacer can minimise the stress induced in the workpiece due to the clamping force. The results of heat flux and thermal effect simulations on the top brackets, revealed that there was high penetration of heat on the majority of the top brackets surface during welding operations. However, the thermal effects of this welding operations had no effect on the quality of the individual components of the top brackets been joined together during the welding operation. This study adds to the understanding of the development of work holding systems and will assist the rail car manufacturing industries in their quest for component’s localization.","PeriodicalId":286146,"journal":{"name":"2023 14th International Conference on Mechanical and Intelligent Manufacturing Technologies (ICMIMT)","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-05-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127697401","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-05-26DOI: 10.1109/ICMIMT59138.2023.10200190
Bara’ El-Atrash, S. Haridy, M. Shamsuzzaman
This research discusses economic-statistical design of the exponentially weighted moving average (EWMA) control chart. Based on Duncan’s model, an optimization approach is proposed for designing the EWMA chart to reduce the expected total cost (ETC) under statistical constrains. The developed EWMA chart is thereafter compared with the traditional EWMA chart so that its superiority can be evaluated. The study shows that the proposed EWMA chart outperforms the conventional EWMA chart for monitoring defectives.
{"title":"Designing an Economic EWMA Control Chart for Monitoring Attributes under Statistical Constraints","authors":"Bara’ El-Atrash, S. Haridy, M. Shamsuzzaman","doi":"10.1109/ICMIMT59138.2023.10200190","DOIUrl":"https://doi.org/10.1109/ICMIMT59138.2023.10200190","url":null,"abstract":"This research discusses economic-statistical design of the exponentially weighted moving average (EWMA) control chart. Based on Duncan’s model, an optimization approach is proposed for designing the EWMA chart to reduce the expected total cost (ETC) under statistical constrains. The developed EWMA chart is thereafter compared with the traditional EWMA chart so that its superiority can be evaluated. The study shows that the proposed EWMA chart outperforms the conventional EWMA chart for monitoring defectives.","PeriodicalId":286146,"journal":{"name":"2023 14th International Conference on Mechanical and Intelligent Manufacturing Technologies (ICMIMT)","volume":"33 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-05-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122950485","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
The objective of this paper was to design a carding and spinning machine for ovine fiber to enhance the quality in the production of yarns according to the demand of the textile market at a family level. For the development of this research work, the analysis of the state of technology of the machine was developed, then the tasks were classified by means of a list of requirements of the families dedicated to the textile industry in the high Andean zones of Peru, in order to determine the functions of the machine and to arrive at a viable solution both technically and economically. The results of the machine design were determined for yarn production at a family level of 6.12 kg/day increasing by 4.2% with respect to the artisanal production, which is 5.87 kg/day. Regarding the carding process a single-phase electric motor of 0.4 hp with 1745 RPM at a transmission ratio of 3.1/1 and for the spinning process a single-phase electric motor of 0.3 hp with 1500 RPM at a transmission ratio of 2.3/1 in order to maintain the properties of the ovine fiber so as to obtain yarn with a tensile strength between 30 to 50 Newton per Kilotex.
{"title":"Design of an Ovine Fiber Carding and Spinning Machine to Enhance Yarn Quality and Production in High Andean Areas of Peru","authors":"Jhosep Sedano Clemente, Jeanpaul Boris Cajachagua Mayta, Roberto Belarmino Quispe Cabana","doi":"10.1109/ICMIMT59138.2023.10199486","DOIUrl":"https://doi.org/10.1109/ICMIMT59138.2023.10199486","url":null,"abstract":"The objective of this paper was to design a carding and spinning machine for ovine fiber to enhance the quality in the production of yarns according to the demand of the textile market at a family level. For the development of this research work, the analysis of the state of technology of the machine was developed, then the tasks were classified by means of a list of requirements of the families dedicated to the textile industry in the high Andean zones of Peru, in order to determine the functions of the machine and to arrive at a viable solution both technically and economically. The results of the machine design were determined for yarn production at a family level of 6.12 kg/day increasing by 4.2% with respect to the artisanal production, which is 5.87 kg/day. Regarding the carding process a single-phase electric motor of 0.4 hp with 1745 RPM at a transmission ratio of 3.1/1 and for the spinning process a single-phase electric motor of 0.3 hp with 1500 RPM at a transmission ratio of 2.3/1 in order to maintain the properties of the ovine fiber so as to obtain yarn with a tensile strength between 30 to 50 Newton per Kilotex.","PeriodicalId":286146,"journal":{"name":"2023 14th International Conference on Mechanical and Intelligent Manufacturing Technologies (ICMIMT)","volume":"223 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-05-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116037978","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-05-26DOI: 10.1109/ICMIMT59138.2023.10199212
Delani Favours Ntobela, L. Tartibu, T. Kunene
Water is the most basic important substance on earth. Many people from developing countries are struggling daily to have access to potable water to sustain their lives. Poor people from rural areas are walking long distances and spend money on water transportation just to have access to potable water. People who can’t walk long distances and can’t afford to pay for transportation of water, have to share river water, dams, or ponds with animals. In rural areas, most communities are using the river water for different reasons such as bathing, swimming and washing their livestock, while others use the same river water for drinking without purification. Consumption of this water causes the outbreak of waterborne disease. Illness from water-related diseases and bacteria is a common problem in developing countries and it accounts for approximately 2.2 million deaths per year globally. In this work, raw water samples were collected from one of the rural villages (Dumezulu village). Water analysis was performed in the laboratory to determine how much contaminants are present in raw water. Reverse Osmosis (RO) method has been adopted to reduce the high concentration of contaminants and comply with South African National Standards.
{"title":"Estimation of Water Quality Indexes to Customize the Design of a Water Purifier System","authors":"Delani Favours Ntobela, L. Tartibu, T. Kunene","doi":"10.1109/ICMIMT59138.2023.10199212","DOIUrl":"https://doi.org/10.1109/ICMIMT59138.2023.10199212","url":null,"abstract":"Water is the most basic important substance on earth. Many people from developing countries are struggling daily to have access to potable water to sustain their lives. Poor people from rural areas are walking long distances and spend money on water transportation just to have access to potable water. People who can’t walk long distances and can’t afford to pay for transportation of water, have to share river water, dams, or ponds with animals. In rural areas, most communities are using the river water for different reasons such as bathing, swimming and washing their livestock, while others use the same river water for drinking without purification. Consumption of this water causes the outbreak of waterborne disease. Illness from water-related diseases and bacteria is a common problem in developing countries and it accounts for approximately 2.2 million deaths per year globally. In this work, raw water samples were collected from one of the rural villages (Dumezulu village). Water analysis was performed in the laboratory to determine how much contaminants are present in raw water. Reverse Osmosis (RO) method has been adopted to reduce the high concentration of contaminants and comply with South African National Standards.","PeriodicalId":286146,"journal":{"name":"2023 14th International Conference on Mechanical and Intelligent Manufacturing Technologies (ICMIMT)","volume":"364 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-05-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132507006","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-05-26DOI: 10.1109/ICMIMT59138.2023.10200436
Ziyu Mao, Yihao Wu, H. Xing, Dongke Sun
A coupled model of lattice Boltzmann (LB) and phase-field method is proposed to study cell migration and deformation patterns in Poiseuille flow. The cell phase-field model is used to simulate the cell evolution over time, while the lattice Bhatnagar-Gross-Krook (LBGK) model is used to simulate fluid flow. The model is validated by performing simulations of cells head-on collision and plane Poiseuille flow. The study investigates the effects of initial position, shape energy $mu$, elasticity modulus $gamma$, and cell radius R on cell migration and deformation behavior. The impact of fluid velocity in Poiseuille flow on cell migration and deformation is investigated. The results demonstrate the potential of the present model for simulating the dynamics of cell behavior, and providing guidance for hemodynamic studies considering cells in microcirculation.
{"title":"Numerical Simulation of Cell Migration and Deformation with Flow Using a Coupled Lattice Boltzmann and Phase-Field Method","authors":"Ziyu Mao, Yihao Wu, H. Xing, Dongke Sun","doi":"10.1109/ICMIMT59138.2023.10200436","DOIUrl":"https://doi.org/10.1109/ICMIMT59138.2023.10200436","url":null,"abstract":"A coupled model of lattice Boltzmann (LB) and phase-field method is proposed to study cell migration and deformation patterns in Poiseuille flow. The cell phase-field model is used to simulate the cell evolution over time, while the lattice Bhatnagar-Gross-Krook (LBGK) model is used to simulate fluid flow. The model is validated by performing simulations of cells head-on collision and plane Poiseuille flow. The study investigates the effects of initial position, shape energy $mu$, elasticity modulus $gamma$, and cell radius R on cell migration and deformation behavior. The impact of fluid velocity in Poiseuille flow on cell migration and deformation is investigated. The results demonstrate the potential of the present model for simulating the dynamics of cell behavior, and providing guidance for hemodynamic studies considering cells in microcirculation.","PeriodicalId":286146,"journal":{"name":"2023 14th International Conference on Mechanical and Intelligent Manufacturing Technologies (ICMIMT)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-05-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130810003","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-05-26DOI: 10.1109/ICMIMT59138.2023.10200605
Salaminah Bonolo Boshoman, O. Fatoba, T. Jen
Over the years, titanium and titanium alloys have seen a rise in choice of material for many industries such as, biomedical, automotive, aerospace, marine, energy, and chemical industries. The main reason for the demand for titanium is its great combination of properties; excellent corrosion resistance, fatigue strength, low density, biocompatibility, high fracture toughness, and easy formability. TiAl4V is the most popular of the titanium alloys not only because of its excellent properties but also because it is by far the most studied alloy of all the titanium alloys. This gives the alloy a great advantage as it is continuously investigated through different processing techniques for better and improved performance. Processing techniques for the fabrication of titanium and titanium alloys include both conventional, still and additive manufacturing methods. Plenty research shows that conventional ways result in wasted time, energy and material hence more and more investment has gone into alternative ways over the past decade. The paper reviews the additive manufacturing method, laser cladding. This is a technique employed for surface modification of metallic tools which is mainly used when abrasive and corrosive behaviour is the required specification for application. Unfortunately, despite its excellent exhibition of properties, titanium is not without shortfalls, in the tribology-related industry, titanium fails to uphold good performance for surface hardness, friction coefficient and wear which limits their popularity and application. For this reason, the continual research and investigation for the enhancement of Ti6Al4V alloy is of great importance. This review is a collection of investigations that have been attempted with the objective of improving the problems of the titanium metals through laser cladding. The findings are reviewed and summarized.
{"title":"Laser Cladding of Titanium Alloys: A Review","authors":"Salaminah Bonolo Boshoman, O. Fatoba, T. Jen","doi":"10.1109/ICMIMT59138.2023.10200605","DOIUrl":"https://doi.org/10.1109/ICMIMT59138.2023.10200605","url":null,"abstract":"Over the years, titanium and titanium alloys have seen a rise in choice of material for many industries such as, biomedical, automotive, aerospace, marine, energy, and chemical industries. The main reason for the demand for titanium is its great combination of properties; excellent corrosion resistance, fatigue strength, low density, biocompatibility, high fracture toughness, and easy formability. TiAl4V is the most popular of the titanium alloys not only because of its excellent properties but also because it is by far the most studied alloy of all the titanium alloys. This gives the alloy a great advantage as it is continuously investigated through different processing techniques for better and improved performance. Processing techniques for the fabrication of titanium and titanium alloys include both conventional, still and additive manufacturing methods. Plenty research shows that conventional ways result in wasted time, energy and material hence more and more investment has gone into alternative ways over the past decade. The paper reviews the additive manufacturing method, laser cladding. This is a technique employed for surface modification of metallic tools which is mainly used when abrasive and corrosive behaviour is the required specification for application. Unfortunately, despite its excellent exhibition of properties, titanium is not without shortfalls, in the tribology-related industry, titanium fails to uphold good performance for surface hardness, friction coefficient and wear which limits their popularity and application. For this reason, the continual research and investigation for the enhancement of Ti6Al4V alloy is of great importance. This review is a collection of investigations that have been attempted with the objective of improving the problems of the titanium metals through laser cladding. The findings are reviewed and summarized.","PeriodicalId":286146,"journal":{"name":"2023 14th International Conference on Mechanical and Intelligent Manufacturing Technologies (ICMIMT)","volume":"29 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-05-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132286367","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-05-26DOI: 10.1109/ICMIMT59138.2023.10199896
M. Zulu, P. Mashinini
Rotary Friction Welding (RFW) is a solid-state joining technique used to weld symmetrical and circular components. The joining process is obtained through the rotary motion of two workpieces, one which is stationary and the other rotating while undergoing an axial load. During the welding process, the mechanical energy (rotation) is transformed into heat energy through friction. This results in softening of the materials in the weld interface of both pieces, promoting material mixing through rotation and consolidation through forging. In this review paper, a critical analysis of the weld formation and different microstructures achievable in friction welding of high-temperature material, Ti-64, is provided. The main focus of the paper is the comparison of mechanical properties and microstructure of the weld joint, i.e. tensile strength, microhardness, residual stresses, and microstructure of the weld center.
{"title":"Rotary Friction Welding of Ti-64 Alloy: A Review","authors":"M. Zulu, P. Mashinini","doi":"10.1109/ICMIMT59138.2023.10199896","DOIUrl":"https://doi.org/10.1109/ICMIMT59138.2023.10199896","url":null,"abstract":"Rotary Friction Welding (RFW) is a solid-state joining technique used to weld symmetrical and circular components. The joining process is obtained through the rotary motion of two workpieces, one which is stationary and the other rotating while undergoing an axial load. During the welding process, the mechanical energy (rotation) is transformed into heat energy through friction. This results in softening of the materials in the weld interface of both pieces, promoting material mixing through rotation and consolidation through forging. In this review paper, a critical analysis of the weld formation and different microstructures achievable in friction welding of high-temperature material, Ti-64, is provided. The main focus of the paper is the comparison of mechanical properties and microstructure of the weld joint, i.e. tensile strength, microhardness, residual stresses, and microstructure of the weld center.","PeriodicalId":286146,"journal":{"name":"2023 14th International Conference on Mechanical and Intelligent Manufacturing Technologies (ICMIMT)","volume":"23 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-05-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130071268","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-05-26DOI: 10.1109/ICMIMT59138.2023.10200939
S. Shaahid, A. Ahmad, C. Ejim, S. Aramco, Jinjiang Xiao, L. Alhems
Electric Submersible Pumps (ESP) are efficient artificial lift equipment utilized in oil and gas industries to enhance hydrocarbon or water production from wells by lifting high volumes of low-pressure fluids from the well-bores up to surface. The presence of free gas at the pump-intake is a big challenge to achieve the maximum potential from oil wells. To improve ESP performance, it is necessary to understand the two-phase flow behavior at the ESP intake. The objective of this work is to study the two-phase air-water flow behavior at the intake of an ESP for different operating conditions. In this study, a set of experiments were conducted using a two-phase prototype test flow loop. The total fluid mixture flow rate was 1250 barrels/day (bpd), inlet pressure was approximately 1.5 barg $(sim 22$ psig) and inclination angles to the horizontal were 45° and 90°. The intake gas volume fraction (GVF) was varied from 10% to 70%. For this preliminary study, the ESP rotational speed was kept at zero RPM. Images of the air-water flow conditions in the plexiglass test section upstream of the ESP were captured using a high-speed camera. At lower intake GVFs (10 & 30%), dispersed bubbly and occasional slug flow patterns were observed. At higher intake GVFs (50 & 70%), larger slugs and liquid flow reversal (liquid bubbles falling back) were observed. It was also observed that the density of bubbles increased with increasing intake GVF. Observations from this study will be helpful to mitigate challenges associated with ESPs producing high gas content two-phase flows, which are common in oil and gas industries. Furthermore, understanding factors influencing ESP gas-liquid behavior at intake and incorporating suitable components into the ESP assembly will prevent operational problems such as surging and gas locking. The end goal is reduction of ESP downtime, as well as significant decrease in field operation and production cost.
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