Proceedings of the Institution of Mechanical Engineers, Part N: Journal of Nanomaterials, Nanoengineering and Nanosystems最新文献_第2页

Polyacrylonitrile-based carbon nanofiber electrode fabricated via electrospun for supercapacitor application 通过电纺制造的聚丙烯腈基碳纳米纤维电极用于超级电容器

Proceedings of the Institution of Mechanical Engineers, Part N: Journal of Nanomaterials, Nanoengineering and Nanosystems Pub Date : 2024-02-25 DOI: 10.1177/23977914241232161

Sumit Dubal, Sachin S. Chavan, Gaurav Lohar, P. Lokhande, Udayabhaskar Rednam, Deepak Kumar

{"title":"Polyacrylonitrile-based carbon nanofiber electrode fabricated via electrospun for supercapacitor application","authors":"Sumit Dubal, Sachin S. Chavan, Gaurav Lohar, P. Lokhande, Udayabhaskar Rednam, Deepak Kumar","doi":"10.1177/23977914241232161","DOIUrl":"https://doi.org/10.1177/23977914241232161","url":null,"abstract":"The versatile properties of electrospun carbon nanofibers gaining attention for electrode materials for supercapacitors. The heat treatment process of stabilization played an important role before the carbonization process in electrode fabrication. In the present study, electrospun stabilized polyacrylonitrile nanofiber (St PAN) and carbonized Polyacrylonitrile nanofiber (CNF) at minimum temperature were used as active mass for supercapacitor electrodes. Stabilized CNF nanofiber sample showed a reduction in nanofiber diameter with increased carbon percentage. XRD results showed increased crystallinity in the CNF sample as compared with the Stabilized PAN sample. Electrochemical characterization was performed to measure specific capacitance and to analyze the charge storage mechanism. The proportion of capacitive and diffusion-controlled contributions to energy storage was estimated using Dunn’s model. The results obtained demonstrated that, in comparison to the St PAN electrode, the CNF electrode exhibited a greater capacitive-controlled contribution. The CNF sample has shown an increased capacitive contribution of 82.3% as compared with the St PAN sample. This work provides a method for making electrospun carbon nanofiber-based electrodes as well as a methodical methodology for examining the charge storage process.","PeriodicalId":516661,"journal":{"name":"Proceedings of the Institution of Mechanical Engineers, Part N: Journal of Nanomaterials, Nanoengineering and Nanosystems","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-02-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140433358","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

Sliding tribological properties of nano-sized ceramic particles as oil-based lubricant additives 纳米级陶瓷颗粒作为油基润滑油添加剂的滑动摩擦特性

Proceedings of the Institution of Mechanical Engineers, Part N: Journal of Nanomaterials, Nanoengineering and Nanosystems Pub Date : 2024-02-17 DOI: 10.1177/23977914241231888

Bingxu Wang, Renxu Wang, Xinbo Xiang, Slim Dailamy Zarooq, Yongfeng Yuan, Shao-yi Guo, G. Barber

{"title":"Sliding tribological properties of nano-sized ceramic particles as oil-based lubricant additives","authors":"Bingxu Wang, Renxu Wang, Xinbo Xiang, Slim Dailamy Zarooq, Yongfeng Yuan, Shao-yi Guo, G. Barber","doi":"10.1177/23977914241231888","DOIUrl":"https://doi.org/10.1177/23977914241231888","url":null,"abstract":"The present research investigated the lubricating performance of ZnO, SiO2, and WS2 nanoparticles as oil additives applied on steel frictional pairs. The study consisted of two stages. In first stage, the lubricating properties of nanofluids were examined using the various nanoparticle concentrations. It was obtained that the 3wt% ZnO, 5wt% SiO2, and 3wt% WS2 nanofluids showed the best performance. In second stage, an orthogonal test matrix was designed to understand the influences of load, sliding frequency and surface roughness on the lubricating behavior of the nanofluids. It was found that the frequency and load had the most significant effects on the friction reduction and anti-wear properties of ZnO, SiO2, and WS2 nanofluids. By using scanning electron microscopy and energy dispersive X-ray spectroscopy for potential mechanisms. It was found that the nanoparticles could be physically embedded, and adhered to the worn areas to form tribo-films resulting in improved tribological performance.","PeriodicalId":516661,"journal":{"name":"Proceedings of the Institution of Mechanical Engineers, Part N: Journal of Nanomaterials, Nanoengineering and Nanosystems","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-02-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139960159","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

Bioconvective flow analysis of non-Newtonian fluid over a porous curved stretching surface 多孔弯曲拉伸表面上非牛顿流体的生物对流分析

Proceedings of the Institution of Mechanical Engineers, Part N: Journal of Nanomaterials, Nanoengineering and Nanosystems Pub Date : 2024-02-16 DOI: 10.1177/23977914241231891

Naveed Ahsan, M. N. Aslam, Muhammad Naveed Khan, Emad A. Az-Zo’bi

{"title":"Bioconvective flow analysis of non-Newtonian fluid over a porous curved stretching surface","authors":"Naveed Ahsan, M. N. Aslam, Muhammad Naveed Khan, Emad A. Az-Zo’bi","doi":"10.1177/23977914241231891","DOIUrl":"https://doi.org/10.1177/23977914241231891","url":null,"abstract":"The aim of current investigation is to explore the two-dimensional Darcy flow of second grade fluid with homogenous and heterogeneous reactions toward a porous curved stretching surface. The thermal features the bioconvective flow are observed with the impact of joule heating, nonlinear thermal radiation, and non-uniform heat source/sink. The thermal stratification conditions are imposed on the boundary of the surface with magnetic field which is normal to surface. Flow model momentum and energy equations are converted into the system of nonlinear ordinary differential equations with some appropriative transformation. These nonlinear equations are tackled numerically with the utilization of Bvp4c approach. The graphical and tabulated results are obtained and discussed thoroughly. It is noticed that for the larger Darcy-Forchheimer number F, porosity parameter [Formula: see text], and Hartman number M, the fluid velocity decreases, while curvature parameter [Formula: see text] exhibits the reverse trend on the velocity field. Further, increment in the fluid temperature is observed by the escalation of the Hartman number M and Eckert number Ec, because more resistance produces larger energy in the fluid. This research contributes to understanding the complex interplay of parameters governing fluid dynamics and thermal behavior near porous curved surfaces, shedding light on the impact of various factors on velocity and temperature distributions.","PeriodicalId":516661,"journal":{"name":"Proceedings of the Institution of Mechanical Engineers, Part N: Journal of Nanomaterials, Nanoengineering and Nanosystems","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-02-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139960904","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

Characterization and thermo-mechanical analysis of centrifugally fabricated aluminium-boron carbide functionally graded composites 离心制造的铝硼碳化功能分级复合材料的特性和热机械分析

Proceedings of the Institution of Mechanical Engineers, Part N: Journal of Nanomaterials, Nanoengineering and Nanosystems Pub Date : 2024-02-14 DOI: 10.1177/23977914241227593

R. Ambigai, S. Prabhu

{"title":"Characterization and thermo-mechanical analysis of centrifugally fabricated aluminium-boron carbide functionally graded composites","authors":"R. Ambigai, S. Prabhu","doi":"10.1177/23977914241227593","DOIUrl":"https://doi.org/10.1177/23977914241227593","url":null,"abstract":"This research focuses on developing lightweight functionally gradient composites (FGCs) having graded distribution B4C in aluminium matrix by employing centrifugal casting technique. Two different sizes of reinforcement, that is, 100 and 50 μm was chosen to analyse its effect on the thermo mechanical properties and its distribution were analysed in this study. Advanced characterization revealed smooth graded distribution of the reinforcement across the thickness of the fabricated FGCs. The density and micro Vickers hardness test showed that they are 1.5% higher at outer periphery ensuring the graded distribution of B4C. The tensile strength was 31% higher for 50 μm sized reinforcement in the FGC, due to the increased surface area-to-volume ratio of the reinforcement. The thermal properties like thermal conductivity was 46.4% higher, thermal diffusivity was 27.8% higher for 100 μm sized reinforcement than for 50 μm sized reinforcement in the FGC. The above research work provides a new perspective on deploying aluminium based B4C graded composites for heat exchangers or fins subjected to varying thermal loads.","PeriodicalId":516661,"journal":{"name":"Proceedings of the Institution of Mechanical Engineers, Part N: Journal of Nanomaterials, Nanoengineering and Nanosystems","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-02-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139777667","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

Characterization and thermo-mechanical analysis of centrifugally fabricated aluminium-boron carbide functionally graded composites 离心制造的铝硼碳化功能分级复合材料的特性和热机械分析

Proceedings of the Institution of Mechanical Engineers, Part N: Journal of Nanomaterials, Nanoengineering and Nanosystems Pub Date : 2024-02-14 DOI: 10.1177/23977914241227593

R. Ambigai, S. Prabhu

{"title":"Characterization and thermo-mechanical analysis of centrifugally fabricated aluminium-boron carbide functionally graded composites","authors":"R. Ambigai, S. Prabhu","doi":"10.1177/23977914241227593","DOIUrl":"https://doi.org/10.1177/23977914241227593","url":null,"abstract":"This research focuses on developing lightweight functionally gradient composites (FGCs) having graded distribution B4C in aluminium matrix by employing centrifugal casting technique. Two different sizes of reinforcement, that is, 100 and 50 μm was chosen to analyse its effect on the thermo mechanical properties and its distribution were analysed in this study. Advanced characterization revealed smooth graded distribution of the reinforcement across the thickness of the fabricated FGCs. The density and micro Vickers hardness test showed that they are 1.5% higher at outer periphery ensuring the graded distribution of B4C. The tensile strength was 31% higher for 50 μm sized reinforcement in the FGC, due to the increased surface area-to-volume ratio of the reinforcement. The thermal properties like thermal conductivity was 46.4% higher, thermal diffusivity was 27.8% higher for 100 μm sized reinforcement than for 50 μm sized reinforcement in the FGC. The above research work provides a new perspective on deploying aluminium based B4C graded composites for heat exchangers or fins subjected to varying thermal loads.","PeriodicalId":516661,"journal":{"name":"Proceedings of the Institution of Mechanical Engineers, Part N: Journal of Nanomaterials, Nanoengineering and Nanosystems","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-02-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139837229","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

Nonlinear bending examination of nanocomposite cylindrical shell exposed to mechanical loads using dynamic relaxation method 利用动态松弛法对承受机械载荷的纳米复合材料圆柱形外壳进行非线性弯曲检验

Proceedings of the Institution of Mechanical Engineers, Part N: Journal of Nanomaterials, Nanoengineering and Nanosystems Pub Date : 2024-02-07 DOI: 10.1177/23977914231215229

E. Rahimi, M. Sadeghian, M. E. Golmakani

引用次数: 0

Nonlinear bending examination of nanocomposite cylindrical shell exposed to mechanical loads using dynamic relaxation method 利用动态松弛法对承受机械载荷的纳米复合材料圆柱形外壳进行非线性弯曲检验

Proceedings of the Institution of Mechanical Engineers, Part N: Journal of Nanomaterials, Nanoengineering and Nanosystems Pub Date : 2024-02-07 DOI: 10.1177/23977914231215229

E. Rahimi, M. Sadeghian, M. E. Golmakani

引用次数: 0

Computational analysis on transient MHD free convection flow in a microchannel in presence of inclined magnetic field with Hall and ion slip current 存在霍尔和离子滑移电流的倾斜磁场时微通道中瞬态 MHD 自由对流的计算分析

Proceedings of the Institution of Mechanical Engineers, Part N: Journal of Nanomaterials, Nanoengineering and Nanosystems Pub Date : 2024-02-06 DOI: 10.1177/23977914231214860

B. Jha, P. Malgwi

引用次数: 0

Effects of joule heating and viscous dissipation on electromagneto-hydrodynamic flow in a microchannel with electroosmotic effect: Enhancement of MEMS cooling 焦耳加热和粘性耗散对具有电渗效应的微通道中电磁流体力学流动的影响：增强 MEMS 冷却

Proceedings of the Institution of Mechanical Engineers, Part N: Journal of Nanomaterials, Nanoengineering and Nanosystems Pub Date : 2024-02-06 DOI: 10.1177/23977914231217929

Usman S. Rilwan, M. Oni, H. Jibril, B. Jha

{"title":"Effects of joule heating and viscous dissipation on electromagneto-hydrodynamic flow in a microchannel with electroosmotic effect: Enhancement of MEMS cooling","authors":"Usman S. Rilwan, M. Oni, H. Jibril, B. Jha","doi":"10.1177/23977914231217929","DOIUrl":"https://doi.org/10.1177/23977914231217929","url":null,"abstract":"This paper inspects the effect of Joule heating and viscous dissipation due to electric double layer (EDL) and electroosmotic effect on steady fully developed electromagnetohydrodynamic flow in a microchannel. Dimensionless formulations of the Poisson-Boltzmann, momentum, and energy equations are derived for the electric potential, velocity profile, and temperature distribution in the microchannel. Exact solutions for the temperature distributions and velocity profile were obtained using the method of undetermined coefficients. The Debye-Hückel linearization is used to get exact solution for the electric potential. The results showed that Brinkmann number [Formula: see text], Joule heating parameter [Formula: see text], Debye-Hückel parameter [Formula: see text], Hartmann number [Formula: see text], and electric field [Formula: see text] have a substantial impact on flow formation and heat transfer. The complex interaction between joule heating, viscous dissipation, and the EOF effect were accurately captured. The range values for the governing parameter for [Formula: see text], [Formula: see text], [Formula: see text], [Formula: see text], and [Formula: see text] are [Formula: see text], and[Formula: see text] respectively.","PeriodicalId":516661,"journal":{"name":"Proceedings of the Institution of Mechanical Engineers, Part N: Journal of Nanomaterials, Nanoengineering and Nanosystems","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-02-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139799425","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

Effects of joule heating and viscous dissipation on electromagneto-hydrodynamic flow in a microchannel with electroosmotic effect: Enhancement of MEMS cooling 焦耳加热和粘性耗散对具有电渗效应的微通道中电磁流体力学流动的影响：增强 MEMS 冷却

Proceedings of the Institution of Mechanical Engineers, Part N: Journal of Nanomaterials, Nanoengineering and Nanosystems Pub Date : 2024-02-06 DOI: 10.1177/23977914231217929

Usman S. Rilwan, M. Oni, H. Jibril, B. Jha

{"title":"Effects of joule heating and viscous dissipation on electromagneto-hydrodynamic flow in a microchannel with electroosmotic effect: Enhancement of MEMS cooling","authors":"Usman S. Rilwan, M. Oni, H. Jibril, B. Jha","doi":"10.1177/23977914231217929","DOIUrl":"https://doi.org/10.1177/23977914231217929","url":null,"abstract":"This paper inspects the effect of Joule heating and viscous dissipation due to electric double layer (EDL) and electroosmotic effect on steady fully developed electromagnetohydrodynamic flow in a microchannel. Dimensionless formulations of the Poisson-Boltzmann, momentum, and energy equations are derived for the electric potential, velocity profile, and temperature distribution in the microchannel. Exact solutions for the temperature distributions and velocity profile were obtained using the method of undetermined coefficients. The Debye-Hückel linearization is used to get exact solution for the electric potential. The results showed that Brinkmann number [Formula: see text], Joule heating parameter [Formula: see text], Debye-Hückel parameter [Formula: see text], Hartmann number [Formula: see text], and electric field [Formula: see text] have a substantial impact on flow formation and heat transfer. The complex interaction between joule heating, viscous dissipation, and the EOF effect were accurately captured. The range values for the governing parameter for [Formula: see text], [Formula: see text], [Formula: see text], [Formula: see text], and [Formula: see text] are [Formula: see text], and[Formula: see text] respectively.","PeriodicalId":516661,"journal":{"name":"Proceedings of the Institution of Mechanical Engineers, Part N: Journal of Nanomaterials, Nanoengineering and Nanosystems","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-02-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139859209","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