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Volume 2: Materials; Joint MSEC-NAMRC-Manufacturing USA最新文献

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Chip Morphology Studies Using Separate Fracture Toughness Values for Chip Separation and Serration in Orthogonal Machining Simulations 正交加工模拟中切屑分离和锯齿化的分离韧性研究
Volume 2: Materials; Joint MSEC-NAMRC-Manufacturing USA Pub Date : 2018-06-18 DOI: 10.1115/MSEC2018-6682
J. Patel, H. Cherukuri
{"title":"Chip Morphology Studies Using Separate Fracture Toughness Values for Chip Separation and Serration in Orthogonal Machining Simulations","authors":"J. Patel, H. Cherukuri","doi":"10.1115/MSEC2018-6682","DOIUrl":"https://doi.org/10.1115/MSEC2018-6682","url":null,"abstract":"It is well known that the chip morphology predictions in machining simulations depend on the separation criteria used for modeling chip formation. In this paper, we propose to use two different criteria for chip separation and serration along with the Johnson-Cook damage model. The threshold value for chip separation is determined from machining experiments using the methodologies discussed in Patel et al. [1]. In addition, two separate damage evolution laws for chip separation and serration are used. Our results indicate that the choice of the evolution law and the threshold values of Gc used for chip separation and serration have a significant effect on chip shape and other field variables such as the equivalent plastic strain, cutting force, temperature, etc.","PeriodicalId":290562,"journal":{"name":"Volume 2: Materials; Joint MSEC-NAMRC-Manufacturing USA","volume":"31 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-06-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127224281","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}
引用次数: 1
Design of Nano-Filled PET Sheets With Enhanced Barrier Properties 增强阻隔性能的纳米填充PET片材的设计
Volume 2: Materials; Joint MSEC-NAMRC-Manufacturing USA Pub Date : 2018-06-18 DOI: 10.1115/MSEC2018-6413
F. Quadrini, D. Bellisario, L. Santo
{"title":"Design of Nano-Filled PET Sheets With Enhanced Barrier Properties","authors":"F. Quadrini, D. Bellisario, L. Santo","doi":"10.1115/MSEC2018-6413","DOIUrl":"https://doi.org/10.1115/MSEC2018-6413","url":null,"abstract":"Barrier properties are achieved in PET food packaging by using additives, coatings or multi-layers. An analytical model to predict the contamination during multiple recycling steps of this packaging is proposed. This model shows that lower contents of non-PET materials should be achieved to promote a valid recycling chain. A possible solution is using nano-technologies because of the very small amount of added material. Results are shown in the case of PVD coatings with aluminum target, and PET nano-composites. In both cases, less than 0.1 wt% of aluminum is able to reduce the oxygen transmission ratio of the PET packaging down to 50% of the virgin PET sheet.","PeriodicalId":290562,"journal":{"name":"Volume 2: Materials; Joint MSEC-NAMRC-Manufacturing USA","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-06-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127792304","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}
引用次数: 1
Microstructure and Tensile Properties of SLM Graphene Reinforced Inconel 718 Alloy After Post Heat Treatment SLM石墨烯增强Inconel 718合金热处理后的组织与拉伸性能
Volume 2: Materials; Joint MSEC-NAMRC-Manufacturing USA Pub Date : 2018-06-18 DOI: 10.1115/MSEC2018-6694
Yachao Wang, Jing Shi
{"title":"Microstructure and Tensile Properties of SLM Graphene Reinforced Inconel 718 Alloy After Post Heat Treatment","authors":"Yachao Wang, Jing Shi","doi":"10.1115/MSEC2018-6694","DOIUrl":"https://doi.org/10.1115/MSEC2018-6694","url":null,"abstract":"Graphene is an ideal reinforcement material for metal matrix composites (MMC) owing to its high strength, high ductility, light weight, as well as good bonding with metal matrix. Additive manufacturing such as selective laser melting (SLM) brings the advantages of low material waste, high flexibility, and short production lead cycle. In this study, graphene nano-platelets (GNPs) reinforced Inconel 718 composites are fabricated by SLM technique and processed under various post heat treatment schemes. It is found that fabrication of GNPs reinforced MMC using SLM technique is a viable approach. The obtained composite possesses dense microstructure and enhanced tensile strength. Post heat treatments at two levels of solution temperature (980 and 1220°C) for 1 hour followed by two-step aging are carried out. The experiment results indicate that addition of GNPs into Inconel 718 matrix results in significant strength improvement. At as-built condition, the ultimate tensile strengths are 997 and 1447 MPa, respectively at 0 and 4.4vol.% GNP content. Moreover, under as-built and solution treated condition, high content of GNPs results in overall higher UTS value and the strengthening effect is most significant at as-built condition. Meanwhile, γ′ and γ″ precipitation hardening is suppressed in the GNPs reinforced composite under aged condition due to the formation of MC carbide and depletion of Nb. Incorporating GNPs in Inconel 718 effectively inhibits the grain growth during post heat treatment.","PeriodicalId":290562,"journal":{"name":"Volume 2: Materials; Joint MSEC-NAMRC-Manufacturing USA","volume":"28 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-06-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126705610","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}
引用次数: 1
Automated Multi-User Analysis of Virtualized Voxel-Based Cam on Shared GPUs 基于共享gpu的虚拟体素Cam多用户自动分析
Volume 2: Materials; Joint MSEC-NAMRC-Manufacturing USA Pub Date : 2018-06-18 DOI: 10.1115/MSEC2018-6322
Roby Lynn, R. L. Medrano, Didier Contis, Thomas M. Tucker, T. Kurfess
{"title":"Automated Multi-User Analysis of Virtualized Voxel-Based Cam on Shared GPUs","authors":"Roby Lynn, R. L. Medrano, Didier Contis, Thomas M. Tucker, T. Kurfess","doi":"10.1115/MSEC2018-6322","DOIUrl":"https://doi.org/10.1115/MSEC2018-6322","url":null,"abstract":"Computer-aided manufacturing (CAM) software allows for the generation of toolpaths for computer numerical control (CNC) machine tools and enables the creation of sophisticated parts that would not otherwise be possible with conventional manual machining methods. Voxel-based CAM is a recent approach to toolpath planning that enables creation of paths for parts that would be difficult to create with traditional CAM software. However, the use of voxel-based CAM necessitates the presence of powerful hardware (specifically, graphics processing units) in order to perform the necessary computations for creating toolpaths. The concepts of virtualization and desktop-as-a-service offer a promising solution to this challenge, as they allow for many users to access computer hardware that is hosted on a single server. This work investigates the performance impact caused by multiple simultaneous users on voxel-based CAM deployed in a virtualized environment. The implementation of a Python application for multi-user simulation on the virtualized platform is described and timing results gathered from a sequence of simulations are presented and analyzed as the number of users is varied. The results from these simulations demonstrate consistent operational times for a low number of simultaneous users before a period of high performance variation due to resource sharing.","PeriodicalId":290562,"journal":{"name":"Volume 2: Materials; Joint MSEC-NAMRC-Manufacturing USA","volume":"67 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-06-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133992858","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}
引用次数: 3
Electrohydrodynamically Processed Poly-(Vinylidene Fluoride)/Polyaniline Composite Film on Soft Tissue Paper for Mechanoelectrical Energy Conversion and Vibration Sensing 电流体动力加工软纸上聚偏氟乙烯/聚苯胺复合薄膜的机电能量转换和振动传感
Volume 2: Materials; Joint MSEC-NAMRC-Manufacturing USA Pub Date : 2018-06-18 DOI: 10.1115/MSEC2018-6351
Muhammad S. Waliullah, Y. Gan, A. Chen, Ryan N. Gan
{"title":"Electrohydrodynamically Processed Poly-(Vinylidene Fluoride)/Polyaniline Composite Film on Soft Tissue Paper for Mechanoelectrical Energy Conversion and Vibration Sensing","authors":"Muhammad S. Waliullah, Y. Gan, A. Chen, Ryan N. Gan","doi":"10.1115/MSEC2018-6351","DOIUrl":"https://doi.org/10.1115/MSEC2018-6351","url":null,"abstract":"Electrohydrodynamic processing including electrospinning and electrospraying is suitable for depositing controllable structures in fiber or film form. In this work, the electrohydrodynamic approach was used to prepare poly(vinylidene fluoride)/polyaniline composite film. Scanning electron microscopic analysis was performed to show the morphology of the film on soft tissue paper. Self-poling of the film was found due to the high voltage application in the electrohydrodynamic process. The addition of polyaniline into PVDF improves the conductivity of the film significantly. Mechanoelectrical response of the film was demonstrated by measuring the open circuit voltage of the specimens under bending. The peak voltage generated is over 1.2 V due to the bending deformation of the film. The film has ultrafast response to the deformation. It is concluded that the film has multiple functions for mechanoelectrical energy conversion, vibration sensing, and structural integrity monitoring applications.","PeriodicalId":290562,"journal":{"name":"Volume 2: Materials; Joint MSEC-NAMRC-Manufacturing USA","volume":"97 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-06-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133583175","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}
引用次数: 0
Regional Manufacturing Cost Structures and Supply Chain Considerations for Medium Voltage Silicon Carbide Power Applications 中压碳化硅电源应用的区域制造成本结构和供应链考虑
Volume 2: Materials; Joint MSEC-NAMRC-Manufacturing USA Pub Date : 2018-06-18 DOI: 10.1115/MSEC2018-6601
S. Reese, M. Mann, Timothy Remo, K. Horowitz
{"title":"Regional Manufacturing Cost Structures and Supply Chain Considerations for Medium Voltage Silicon Carbide Power Applications","authors":"S. Reese, M. Mann, Timothy Remo, K. Horowitz","doi":"10.1115/MSEC2018-6601","DOIUrl":"https://doi.org/10.1115/MSEC2018-6601","url":null,"abstract":"Bottoms-up cost analysis has been a mainstay of commoditized industry and manufacturing processes for years, however a holistic objective supply chain analysis to inform research and investment in the development of early stage technologies has not. The potential for rapid adoption of wide bandgap (WBG) semiconductors, specifically silicon carbide (SiC), highlights a need to understand the drivers of location-specific manufacturing cost, global supply chains, and plant location decisions. Further, ongoing research and investment, necessitates analytical analysis to help inform the roadmap of SiC technologies. In collaboration with PowerAmerica the project explores the bottoms-up cost analysis of wafers, devices, modules, and variable frequency motor drives at the anticipated manufacturing levels. Leveraging these models, it outlines how the cost reduction potential of proposed research advances can be quantified.","PeriodicalId":290562,"journal":{"name":"Volume 2: Materials; Joint MSEC-NAMRC-Manufacturing USA","volume":"39 2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-06-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133107973","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}
引用次数: 3
Consolidation of Nanostructured Metal Powders Produced by Modulation-Assisted Machining 调制辅助加工制备纳米结构金属粉末的固结
Volume 2: Materials; Joint MSEC-NAMRC-Manufacturing USA Pub Date : 2018-06-18 DOI: 10.1115/MSEC2018-6621
J. Mann, C. Saldana, S. Chandrasekar
{"title":"Consolidation of Nanostructured Metal Powders Produced by Modulation-Assisted Machining","authors":"J. Mann, C. Saldana, S. Chandrasekar","doi":"10.1115/MSEC2018-6621","DOIUrl":"https://doi.org/10.1115/MSEC2018-6621","url":null,"abstract":"In the present study, nanocrystalline aluminum alloy (Al3003-H14) particulate produced by modulation-assisted machining (MAM) is consolidated by indirect extrusion. The extrusion die was simultaneously heated below the critical time-temperature conditions for recrystallization. Experimental consolidation of platelet shaped particles showed a distinct elongation of grain size in the primary extrusion direction. Metallographic and transmission electron microscopy observations revealed ultrafine grained microstructure with grains having similar orientations across grain boundaries. The shear from indirect extrusion combined with the uniform distribution of alloy particulates by MAM provides a potential route for bulk consolidation of metals and alloys with ultra-fine grained microstructure.","PeriodicalId":290562,"journal":{"name":"Volume 2: Materials; Joint MSEC-NAMRC-Manufacturing USA","volume":"60 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-06-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133257528","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}
引用次数: 0
Multi-Scale Characterization of Deformation in Aluminum 铝变形的多尺度表征
Volume 2: Materials; Joint MSEC-NAMRC-Manufacturing USA Pub Date : 2018-06-18 DOI: 10.1115/MSEC2018-6574
B. Güler, M. Efe
{"title":"Multi-Scale Characterization of Deformation in Aluminum","authors":"B. Güler, M. Efe","doi":"10.1115/MSEC2018-6574","DOIUrl":"https://doi.org/10.1115/MSEC2018-6574","url":null,"abstract":"Materials with deformation behavior sensitive to their microstructure may need deformation analysis at multiple scales to establish the relationship between the microstructure and response to deformation processing. In this work, we use in-plane biaxial test (cruciform) to measure the macro- and microstructure-scale mechanical behavior of a 6061-T6 aluminum alloy at various strain paths. We report flow curves, forming and fracture limits as examples to the macromechanical behavior. As an alternative to the tensile test, it is possible to plot flow curves up to larger strains with the cruciform test. Samples also deform uniformly during the cruciform test and do not develop instabilities in the form of local necks. This allows accurate measurements of forming, and especially fracture limits, under a preset and constant strain ratio. The micromechanical behavior, on the other hand, is quite heterogeneous and microstructure sensitive. Strain localizations at the microstructure scale cause large deviations from the global deformation strains and control the ultimate sample failure at the global scale.","PeriodicalId":290562,"journal":{"name":"Volume 2: Materials; Joint MSEC-NAMRC-Manufacturing USA","volume":"29 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-06-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114071890","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}
引用次数: 0
Joint Formation in Multi-Layered Ultrasonic Welding of Ni-Coated Cu and the Effect of Preheating 镀镍铜多层超声焊接接头形成及预热的影响
Volume 2: Materials; Joint MSEC-NAMRC-Manufacturing USA Pub Date : 2018-06-18 DOI: 10.1115/MSEC2018-6328
Ying Luo, S. Hu, E. Kannatey-Asibu, Haseung Chung, W. Cai, Teresa Rinker, Jeffrey Abell
{"title":"Joint Formation in Multi-Layered Ultrasonic Welding of Ni-Coated Cu and the Effect of Preheating","authors":"Ying Luo, S. Hu, E. Kannatey-Asibu, Haseung Chung, W. Cai, Teresa Rinker, Jeffrey Abell","doi":"10.1115/MSEC2018-6328","DOIUrl":"https://doi.org/10.1115/MSEC2018-6328","url":null,"abstract":"Multi-layered ultrasonic welding (USW) is widely used in joining of electrodes or tabs in lithium-ion batteries. To achieve quality joints and enhance the welding process robustness, an improved understanding of the joint formation is highly desirable. In this paper, USW of 4-layered Ni-coated Cu is studied to investigate the joint formation at a single interface and joint propagation from interface to interface under both ambient and preheated conditions. The results indicate that joint formation involves three major mechanisms: Ni-Ni bonding with minimal mechanical interlocking, Ni-Ni bonding with moderate mechanical interlocking, and a combination of Ni-Ni bonding, Cu-Cu bonding, and severe mechanical interlocking. Results also show that joints propagate from the interface close to the sonotrode side to that close to the anvil side. It is further observed that the joint formation can be accelerated and the joint strength can be improved with process preheating, especially at the interface closest to the anvil. The effect of preheating is most significant during the early stage of the process, and diminishes as process progresses. The favorable effects of preheating improve the robustness of multi-layered USW.","PeriodicalId":290562,"journal":{"name":"Volume 2: Materials; Joint MSEC-NAMRC-Manufacturing USA","volume":"31 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-06-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114818478","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}
引用次数: 4
Friction Stir Lap Welding of Thin AA6061-T6 and AISI304 Sheets at Different Values of Pin Penetrations AA6061-T6薄板与AISI304薄板不同销穿值的搅拌摩擦搭接
Volume 2: Materials; Joint MSEC-NAMRC-Manufacturing USA Pub Date : 2018-06-18 DOI: 10.1115/MSEC2018-6590
R. P. Mahto, Surjya K. Pal
{"title":"Friction Stir Lap Welding of Thin AA6061-T6 and AISI304 Sheets at Different Values of Pin Penetrations","authors":"R. P. Mahto, Surjya K. Pal","doi":"10.1115/MSEC2018-6590","DOIUrl":"https://doi.org/10.1115/MSEC2018-6590","url":null,"abstract":"The present paper focuses on the influence of pin penetration on joint strength achieved in friction stir lap welding between AA6061-T6 and AISI304. Penetration of pin into the steel substrate, which is placed below the aluminium, has an influencing role in achieving a good weld. Beyond a certain depth of penetration of pin into the steel, non-uniform thicker intermetallic compound and the weld defects have been found. Defects were found to be located in the stir zone. Thus, an excessive penetrations of the pin into the steel matrix has been produced a detrimental effect to the weld strength. An optimum penetration of pin has been experimentally found out.","PeriodicalId":290562,"journal":{"name":"Volume 2: Materials; Joint MSEC-NAMRC-Manufacturing USA","volume":"74 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-06-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121722798","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}
引用次数: 9
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