Progress in Canadian Mechanical Engineering. Volume 4最新文献

Hierarchical Cellular Ferroelectric Metamaterials 层状细胞铁电超材料

Progress in Canadian Mechanical Engineering. Volume 4 Pub Date : 2021-06-27 DOI: 10.32393/csme.2021.81

Jiahao Shi, H. Akbarzadeh

{"title":"Hierarchical Cellular Ferroelectric Metamaterials","authors":"Jiahao Shi, H. Akbarzadeh","doi":"10.32393/csme.2021.81","DOIUrl":"https://doi.org/10.32393/csme.2021.81","url":null,"abstract":"The engineering of microstructures has been adopted as an effective approach to tune the overall performance of advanced materials. In this article, inspired by hierarchical porous biomaterials, the multiphysical properties of hierarchical cellular ferroelectric metamaterials constructed of six commonly used primitive cubic unit cells are elicited. Both multiscale asymptotic homogenization and scaling relationship methods are proposed to predict the effective ferroelectric properties of hierarchical cellular metamaterials. Analysis on the influence of design parameters, e.g. hierarchical order, cell topology, and relative density on their effective ferroelectric figures of merit is conducted. The 2 nd -order hierarchical cellular ferroelectric metamaterial exhibits remarkable improvement compared to the corresponding 1 st -order unit cell. For example, the normalized FOM 33 of hybrid 2 nd -order T3-2/L3-1 ( ρ 1 = 0.2, ρ 2 = 0.25) is 117.49, while it is 19.95 for 1 st -order L3-1 ( ρ = 0.05). Increasing the structural hierarchical order can further improve the effective ferroelectric properties of hierarchical cellular ferroelectric metamaterials. This work highlights the potential of ultralight hierarchical ferroelectric metamaterials as the next generation of hydrophone, IR detector, flexible self-powered sensors, and thermal energy harvesting devices.","PeriodicalId":446767,"journal":{"name":"Progress in Canadian Mechanical Engineering. Volume 4","volume":"11 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":"123041282","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

Dimensional Synthesis Of A 2-Pss/U Manipulator 2-Pss/U机械手的尺寸综合

Progress in Canadian Mechanical Engineering. Volume 4 Pub Date : 2021-06-27 DOI: 10.32393/csme.2021.110

Taufiq Rahman, N. Krouglicof

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Experimental Study On Direct Kinetic To Thermal Energy Conversion 直接动能转化为热能的实验研究

Progress in Canadian Mechanical Engineering. Volume 4 Pub Date : 2021-06-27 DOI: 10.32393/csme.2021.98

M. Javed, X. Duan

{"title":"Experimental Study On Direct Kinetic To Thermal Energy Conversion","authors":"M. Javed, X. Duan","doi":"10.32393/csme.2021.98","DOIUrl":"https://doi.org/10.32393/csme.2021.98","url":null,"abstract":"Modern wind turbines are generally used for electricity generation; however, the final form of energy required by many users is thermal energy. Although electrical energy conversion to thermal energy is a high-efficiency process, electricity generation efficiency from wind turbines is usually low. A wind-powered heat generator is proposed that would convert the kinetic energy directly into thermal energy through the process of viscous dissipation; this process is achieved through the agitation of the working fluid inside a container. This heat generator uses an optimized flat blade turbine (FBT) impeller and a fully baffled configuration. For the experimental study, an electric motor is used to provide the kinetic energy input to the heat generator. A torque sensor, tachometer, and thermocouples are used to measure torque, rotational speed, and temperature rise of the fluid, respectively. Using the measured quantities, the efficiency of energy conversion from kinetic energy to sensible heat energy is determined. Experiments are conducted at different rotational speeds and for different working fluids. The experimental results indicate that the heat generator is up to 90% efficient in energy conversion, and the temperature rise rate increases with an increase in the impeller's diameter and the rotational speed. Furthermore, experiments indicate that changing working fluid does not impact heat generator’s performance. A wind turbine can power this heat generator to provide heat to a house or a commercial building. This innovative renewable energy technology would benefit remote areas with cold weather and rich in wind energy.","PeriodicalId":446767,"journal":{"name":"Progress in Canadian Mechanical Engineering. Volume 4","volume":"40 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":"127265925","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

Investigation Of The Nozzles' Spacing Impact On The Interference Of Unequal Parallel Round Jets: Large Eddy Simulation Study 喷嘴间距对非均匀平行圆射流干涉影响的研究:大涡模拟研究

Progress in Canadian Mechanical Engineering. Volume 4 Pub Date : 2021-06-27 DOI: 10.32393/csme.2021.43

M. Karami, S. Ramezani, H. Tofighian

引用次数: 0

Comparison Of The Elastic Modulus Of Elastomer Clay Nanocomposites Predicted By Various Mechanical Models 不同力学模型预测弹性体粘土纳米复合材料弹性模量的比较

Progress in Canadian Mechanical Engineering. Volume 4 Pub Date : 2021-06-27 DOI: 10.32393/csme.2021.174

Mahima Dua, P. Mertiny

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Attitude Dynamics Model Of A Cubesat With Reaction Wheels For An Extended Kalman Filter 基于扩展卡尔曼滤波的反作用轮立方体卫星姿态动力学模型

Progress in Canadian Mechanical Engineering. Volume 4 Pub Date : 2021-06-27 DOI: 10.32393/csme.2021.96

Robert Bauer

引用次数: 0

Rheological Analysis Of A Cellulose Nanofibril Composite Hydrogel Bioink For Bioprinting Applications 一种用于生物打印的纤维素纳米纤维复合水凝胶生物墨水的流变学分析

Progress in Canadian Mechanical Engineering. Volume 4 Pub Date : 2021-06-27 DOI: 10.32393/csme.2021.229

R. Carrick, A. Czekanski, Terry Sachlos

引用次数: 0

Mass And Compliance Minimization Of 3D Printed Polymers 3D打印聚合物的质量和顺应性最小化

Progress in Canadian Mechanical Engineering. Volume 4 Pub Date : 2021-06-27 DOI: 10.32393/csme.2021.190

A. Moter, Mohamed Abdelhamid, A. Czekanski

引用次数: 0

Multiobjective Optimization Of Vortex Tubes Integrated In A Trigenerative Compressed Air Energy Storage System 三产式压缩空气储能系统中涡管集成的多目标优化

Progress in Canadian Mechanical Engineering. Volume 4 Pub Date : 2021-06-27 DOI: 10.32393/csme.2021.53

Erwan Beaugendre, Junior Lagrandeur, Mohamad Cheayb, S. Poncet

引用次数: 0

Design Of Satellite Antenna And Ground Equipment For Communication System Of A Remote Sensing Satellite 遥感卫星通信系统卫星天线及地面设备的设计

Progress in Canadian Mechanical Engineering. Volume 4 Pub Date : 2021-06-27 DOI: 10.32393/csme.2021.246

S. MacPherson, Roger Irakoze, Eagan Boire, Darvin Patel, Cole Hawes, Aidan Gallant, G. McSorley

{"title":"Design Of Satellite Antenna And Ground Equipment For Communication System Of A Remote Sensing Satellite","authors":"S. MacPherson, Roger Irakoze, Eagan Boire, Darvin Patel, Cole Hawes, Aidan Gallant, G. McSorley","doi":"10.32393/csme.2021.246","DOIUrl":"https://doi.org/10.32393/csme.2021.246","url":null,"abstract":"The SpudNik-1 CubeSat project from the University of Prince Edward Island uses a low-cost design for the satellite communications subsystem and ground station. The project uses resources available in-house to design, manufacture, and test satellite components that are normally obtained commercially. Namely, the unique deployment mechanism of the Flat Turnstile Antenna has been designed and will be manufactured by the UPEI CubeSat team. The communications subsystem uses frequencies in UHF for Telemetry, Tracking and Command (TT&C) and S-Band to downlink payload data. The UHF antenna on the satellite is a circularly polarized turnstile antenna and consists of an electrical and mechanical subsystem. The mechanical design is a platform used to store 171.4 mm coiled steel tape antennas (¼ wavelength) held in place prior to deployment. The electrical design of the antenna is implemented in a PCB mounted with four U.FL connectors to connect coaxial cable to the ends of the antennas. The board contains RF power splitters to connect the monopole antennas to create a turnstile antenna. The power splitters combine the signal to connect to the MMCX port mounted to the board, which connects coaxial cable to the transceiver for uplink/downlink communications. The UPEI ground station will use an S-Band Dish antenna for receiving payload data and a single UHF Yagi antenna for uplink and downlink of TT&C data. Both antennas are mounted to a rotator controlling the orientation in azimuth and elevation, with the Yagi connected via a boom. The mode of the UHF ground station link is controlled by a coaxial switch and automated by the ground station operational programming which will determine when a UHF signal is being transmitted or received. A LimeSDR will be used as the ground station transceiver, connected to a computer running SDR Console and GNU Radio","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":"128692429","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