{"title":"Validating Commonly Used Computer Models For Abdominal Aortic Aneurysms","authors":"S. Gibbons, S. Nakhla, A. Elruby, A. Dubrowski","doi":"10.32393/csme.2021.79","DOIUrl":"https://doi.org/10.32393/csme.2021.79","url":null,"abstract":"","PeriodicalId":446767,"journal":{"name":"Progress in Canadian Mechanical Engineering. Volume 4","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-06-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129973473","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}
Additive manufacturing is expanding at a fast rate throughout various industries, exploiting new avenues of topology optimization and reduced prototyping time. However, additive manufacturing is a costly and time consuming process in mass production. Recently, bound powder extrusion, a new metal additive manufacturing method based on metal injection molding was brought to market. The economic feasibility of the bound powder extrusion, as desktop ready process, and it applications have not been thoroughly studied relative to other metal additive manufacturing processes. This research work proposes a costing model of the fused filament fabrication and bound powder extrusion methods to determine their economic feasibility. The similarities between the polymer and metal based methods are exploited to determine the individual part cost based on materials, part processing, consumables, and initial capital cost for each technology. The resulting model was integrated into a custom developed software to be utilized for real world applications. The system also employees an open source fused filament fabrication slicing software to determine the print time, extruded volume, and layer height. The similarities between the novel bound powder extrusion and fused filament fabrication allowed the generation of an accurate cost estimate for the novel method, while encompassing the additional part processing requirements. To apply the costing model in an applicable scenario, an optimized double cardan H-yoke was considered for metal additive manufacturing. The results show that almost 85% of the part cost is directly related to the initial capital investment to acquire the technology. The developed costing model is effective and can be further expanded to incorporate various metal additive manufacturing technologies, along with features such as competitive cost analysis between subtractive and additive methods. Keywords—Additive Manufacturing (AM), Costing Model, Fused Filament Fabrication (FFF), Bound Powder Extrusion (BPE), 3D Printing
{"title":"Design And Development Of A Cost Calculator For Additive Manufacturing","authors":"Benjamin DeBoer, F. Diba, S. A. Hosseini","doi":"10.32393/csme.2021.167","DOIUrl":"https://doi.org/10.32393/csme.2021.167","url":null,"abstract":"Additive manufacturing is expanding at a fast rate throughout various industries, exploiting new avenues of topology optimization and reduced prototyping time. However, additive manufacturing is a costly and time consuming process in mass production. Recently, bound powder extrusion, a new metal additive manufacturing method based on metal injection molding was brought to market. The economic feasibility of the bound powder extrusion, as desktop ready process, and it applications have not been thoroughly studied relative to other metal additive manufacturing processes. This research work proposes a costing model of the fused filament fabrication and bound powder extrusion methods to determine their economic feasibility. The similarities between the polymer and metal based methods are exploited to determine the individual part cost based on materials, part processing, consumables, and initial capital cost for each technology. The resulting model was integrated into a custom developed software to be utilized for real world applications. The system also employees an open source fused filament fabrication slicing software to determine the print time, extruded volume, and layer height. The similarities between the novel bound powder extrusion and fused filament fabrication allowed the generation of an accurate cost estimate for the novel method, while encompassing the additional part processing requirements. To apply the costing model in an applicable scenario, an optimized double cardan H-yoke was considered for metal additive manufacturing. The results show that almost 85% of the part cost is directly related to the initial capital investment to acquire the technology. The developed costing model is effective and can be further expanded to incorporate various metal additive manufacturing technologies, along with features such as competitive cost analysis between subtractive and additive methods. Keywords—Additive Manufacturing (AM), Costing Model, Fused Filament Fabrication (FFF), Bound Powder Extrusion (BPE), 3D Printing","PeriodicalId":446767,"journal":{"name":"Progress in Canadian Mechanical Engineering. Volume 4","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-06-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121133133","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 influence of Earth’s rotation on the structure and mixing of internal hydraulic jumps is studied by means of three-dimensional numerical simulations with varying values of the Coriolis parameter. The Navier-Stokes equations with vertical density stratification are solved numerically for an incompressible fluid. The flow structure varies across the width of the channel due to rotation. In particular, different jump structures are observed at positions across the width of the channel. Mixing also changes as a result of rotation, with larger mixing values occurring at lower rotation rates and on the left side of the channel (when looking in the direction of flow).
{"title":"Effect Of The Earth’S Rotation On Hydraulic Jumps","authors":"Muveno P. E. Mucaza, K. Ogden","doi":"10.32393/csme.2021.107","DOIUrl":"https://doi.org/10.32393/csme.2021.107","url":null,"abstract":"—The influence of Earth’s rotation on the structure and mixing of internal hydraulic jumps is studied by means of three-dimensional numerical simulations with varying values of the Coriolis parameter. The Navier-Stokes equations with vertical density stratification are solved numerically for an incompressible fluid. The flow structure varies across the width of the channel due to rotation. In particular, different jump structures are observed at positions across the width of the channel. Mixing also changes as a result of rotation, with larger mixing values occurring at lower rotation rates and on the left side of the channel (when looking in the direction of flow).","PeriodicalId":446767,"journal":{"name":"Progress in Canadian Mechanical Engineering. Volume 4","volume":"107 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-06-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122639970","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}
This paper provides a detailed description of the E ducational S pace S cience and EN gineering E xperiment ( ESSENCE ) mission’s system design of a 3U- Earth Observation CubeSat. This CubeSat will be designed, built, and operated by Canadian Students for scientific research related to attitude control laws, and monitoring permafrost in the Northern Canadian and Arctic regions. The ESSENCE mission would be launched from the International Space Station (ISS) via a US launch provider called NanoRacks. Moreover, the CubeSat would be operated by students located at Canadian ground stations. The scope of this paper is to discuss the key concepts regarding systems engineering which are required to design a successful CubeSat mission. Some of the concepts include project scope, mission analysis and development of key engineering budgets. Other concepts also include discussions regarding component selection via trade study analysis. These factors often drive the mission and aid other subsystem such as mechanical, electrical, RF communication etc. to make decisions for tasks exclusive to them. Furthermore, an implementation plan of an optical payload will be discussed to capture high resolution earth images of the desired location mentioned above. Lastly, a comparison of two key system design methods will be discussed including waterfall and agile methods. Word 200
{"title":"System Design Of A 3U-Cubesat For An Earth Observation Mission","authors":"A. Prabhudesai, George Z. Zhu","doi":"10.32393/csme.2021.46","DOIUrl":"https://doi.org/10.32393/csme.2021.46","url":null,"abstract":"This paper provides a detailed description of the E ducational S pace S cience and EN gineering E xperiment ( ESSENCE ) mission’s system design of a 3U- Earth Observation CubeSat. This CubeSat will be designed, built, and operated by Canadian Students for scientific research related to attitude control laws, and monitoring permafrost in the Northern Canadian and Arctic regions. The ESSENCE mission would be launched from the International Space Station (ISS) via a US launch provider called NanoRacks. Moreover, the CubeSat would be operated by students located at Canadian ground stations. The scope of this paper is to discuss the key concepts regarding systems engineering which are required to design a successful CubeSat mission. Some of the concepts include project scope, mission analysis and development of key engineering budgets. Other concepts also include discussions regarding component selection via trade study analysis. These factors often drive the mission and aid other subsystem such as mechanical, electrical, RF communication etc. to make decisions for tasks exclusive to them. Furthermore, an implementation plan of an optical payload will be discussed to capture high resolution earth images of the desired location mentioned above. Lastly, a comparison of two key system design methods will be discussed including waterfall and agile methods. Word 200","PeriodicalId":446767,"journal":{"name":"Progress in Canadian Mechanical Engineering. Volume 4","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-06-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123101451","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}
{"title":"Development Of A Dynamic Failure Model For Polymeric Adhesives","authors":"Harshil Pisavadia, P. Dolez, J. Hogan","doi":"10.32393/csme.2021.20","DOIUrl":"https://doi.org/10.32393/csme.2021.20","url":null,"abstract":"","PeriodicalId":446767,"journal":{"name":"Progress in Canadian Mechanical Engineering. Volume 4","volume":"18 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-06-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115410017","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}
Sagar Patel, Haoxiu Chen, Y. Zou, M. Vlasea, Kevin Slattery, John E. Barnes
{"title":"Laser Additive Manufacturing Of High Reflectivity Aluminium Alloys","authors":"Sagar Patel, Haoxiu Chen, Y. Zou, M. Vlasea, Kevin Slattery, John E. Barnes","doi":"10.32393/csme.2021.61","DOIUrl":"https://doi.org/10.32393/csme.2021.61","url":null,"abstract":"","PeriodicalId":446767,"journal":{"name":"Progress in Canadian Mechanical Engineering. Volume 4","volume":"53 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-06-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131533185","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}
Anthony V. Tuccitto, Andrew Anstey, N. Sansone, Chul B. Park, Patrick C. Lee
Poly(L-lactide) (PLLA) is a bio-based and compostable polymer with significant potential for replacing petroleum-derived polymers. However, its poor crystallization kinetics, melt strength and low thermal resistance limit PLLA’s processability and application in high-performance components. Nevertheless, these issues can simultaneously be overcome by melt-blending PLLA with poly(D-lactide) (PDLA) to form stereocomplex crystallites with a melting temperature about 50°C above that of neat homopolymers. These stereocomplex crystallites have a strong nucleating effect and remarkably enhance PLLA’s melt strength, while imparting enhanced thermal resistance. Moreover, if drawn from the melt-state, the stereocomplex crystallites can be transformed into in situ nanofibers. The incorporation of stereocomplex nanofibers in PLLA has been linked to noticeable improvements to crystallization behaviour and a reduction in boiling water shrinkage, relative to conventional spherulitic stereocomplex crystallites. Synthesizing from previous work, the aim of this current work is to tune the properties of in situ fibrillated PLLA/PDLA blends to demonstrate the applicability of PLA as a high-performance polymer. This is done through studying the in situ fibrillation of PLLA blends containing varying concentrations of PDLA, with comparison to neat PLLA and non-stretched blend analogues. A comprehensive comparison between stretched and non-stretched blends reveals the development of concentration-dependent network structures of polymorphic nature. Below the critical concentration for network formation, differences between the properties of stretched and non-stretched blends differ greatly. Above this concentration, blend properties are rather similar. The effect of blend composition, multi-tiered morphology, and polycrystallinity, are systematically investigated to identify structure-property relationships.
{"title":"Exploring The Rheological, Crystallization, And Mechanical Property Behaviour Of Stereocomplexed Poly(Lactide) Blends, And Their Crystalline Network Structures","authors":"Anthony V. Tuccitto, Andrew Anstey, N. Sansone, Chul B. Park, Patrick C. Lee","doi":"10.32393/csme.2021.23","DOIUrl":"https://doi.org/10.32393/csme.2021.23","url":null,"abstract":"Poly(L-lactide) (PLLA) is a bio-based and compostable polymer with significant potential for replacing petroleum-derived polymers. However, its poor crystallization kinetics, melt strength and low thermal resistance limit PLLA’s processability and application in high-performance components. Nevertheless, these issues can simultaneously be overcome by melt-blending PLLA with poly(D-lactide) (PDLA) to form stereocomplex crystallites with a melting temperature about 50°C above that of neat homopolymers. These stereocomplex crystallites have a strong nucleating effect and remarkably enhance PLLA’s melt strength, while imparting enhanced thermal resistance. Moreover, if drawn from the melt-state, the stereocomplex crystallites can be transformed into in situ nanofibers. The incorporation of stereocomplex nanofibers in PLLA has been linked to noticeable improvements to crystallization behaviour and a reduction in boiling water shrinkage, relative to conventional spherulitic stereocomplex crystallites. Synthesizing from previous work, the aim of this current work is to tune the properties of in situ fibrillated PLLA/PDLA blends to demonstrate the applicability of PLA as a high-performance polymer. This is done through studying the in situ fibrillation of PLLA blends containing varying concentrations of PDLA, with comparison to neat PLLA and non-stretched blend analogues. A comprehensive comparison between stretched and non-stretched blends reveals the development of concentration-dependent network structures of polymorphic nature. Below the critical concentration for network formation, differences between the properties of stretched and non-stretched blends differ greatly. Above this concentration, blend properties are rather similar. The effect of blend composition, multi-tiered morphology, and polycrystallinity, are systematically investigated to identify structure-property relationships.","PeriodicalId":446767,"journal":{"name":"Progress in Canadian Mechanical Engineering. Volume 4","volume":"119 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-06-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126689948","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}
{"title":"Metamaterial-Inspired Rf Chipless Tag For Real-Time Non-Invasive Monitoring In Microfluidic Device","authors":"Z. Abbasi, Weijia Cui, C. Ren","doi":"10.32393/csme.2021.208","DOIUrl":"https://doi.org/10.32393/csme.2021.208","url":null,"abstract":"","PeriodicalId":446767,"journal":{"name":"Progress in Canadian Mechanical Engineering. Volume 4","volume":"22 14","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-06-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"113962845","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}
Seyed Mohammad Shushtari, Jiacheng Weng, Rezvan Nasiri, A. Arami
{"title":"A Framework For Modeling And Simulation Of Neuromuscular Control Of Walking","authors":"Seyed Mohammad Shushtari, Jiacheng Weng, Rezvan Nasiri, A. Arami","doi":"10.32393/csme.2021.95","DOIUrl":"https://doi.org/10.32393/csme.2021.95","url":null,"abstract":"","PeriodicalId":446767,"journal":{"name":"Progress in Canadian Mechanical Engineering. Volume 4","volume":"46 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-06-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114466682","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}
Circular hydraulic jump is normally formed due to circular jet impingement on a horizontal disk. Prediction of the jump location in particular is important due to its relevance to numerous practical applications such as jet cooling, jet quenching, and surface cleaning. Previously developed theories of the laminar axisymmetric flow have only focused on the steady-state hydraulic jump. However, upon varying certain physical parameters with time, the developed jump begins to exhibit a transient change. We focus in this work on the situation where transition from one steady-state to another occurs, and we present a fully predictive theory of the transient behaviour of the developed circular hydraulic jump. The theory is validated against numerical simulation for the case of a linearly increasing jet flow rate and against experiment on the sudden drop of gravity from its normal level to a low level. Both comparisons yield good agreement. While the supercritical flow exhibits a transient change, and sometimes a long-term one, when the jet flow rate linearly increases from one steady-state to another, it remains steady when gravity level is lowered. Consequently, for the first case, the jump radius evolution is strongly affected by inertial effects, while for the second case; it shows a same transient period as the one needed by gravity to reach its final level.
{"title":"The Spread Of Transient Circular Liquid Jet And Hydraulic Jump Formation","authors":"A. Baayoun, Yunpeng Wang, R. Khayat","doi":"10.32393/csme.2021.128","DOIUrl":"https://doi.org/10.32393/csme.2021.128","url":null,"abstract":"Circular hydraulic jump is normally formed due to circular jet impingement on a horizontal disk. Prediction of the jump location in particular is important due to its relevance to numerous practical applications such as jet cooling, jet quenching, and surface cleaning. Previously developed theories of the laminar axisymmetric flow have only focused on the steady-state hydraulic jump. However, upon varying certain physical parameters with time, the developed jump begins to exhibit a transient change. We focus in this work on the situation where transition from one steady-state to another occurs, and we present a fully predictive theory of the transient behaviour of the developed circular hydraulic jump. The theory is validated against numerical simulation for the case of a linearly increasing jet flow rate and against experiment on the sudden drop of gravity from its normal level to a low level. Both comparisons yield good agreement. While the supercritical flow exhibits a transient change, and sometimes a long-term one, when the jet flow rate linearly increases from one steady-state to another, it remains steady when gravity level is lowered. Consequently, for the first case, the jump radius evolution is strongly affected by inertial effects, while for the second case; it shows a same transient period as the one needed by gravity to reach its final level.","PeriodicalId":446767,"journal":{"name":"Progress in Canadian Mechanical Engineering. Volume 4","volume":"30 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-06-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114637464","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}
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