检索结果-内蒙古大学图书馆

14th International Conference on Information Technology and Electrical engineering, ICITEE 2022

作者： Wang, Bin Juanatas, Ronaldo Niguidula, Jasmin Anhui Technical College of Mechanical and Electrical Engineering Internet and Communications Department Wuhu China Technological University of the Philippines Graduate Program and External Studies Manila Philippines

ISBN: (数字)9781665460774

ISBN: (纸本)9781665460774

In order to avoid the problems of low accuracy of wheel hub recognition and classification and excessive dependence on template image quality in the process of automatic production of the automobile wheel hub, a vehicle wheel hub recognition method based on Histogram of Oriented Gradient (HOG) and Support Vector Machine (SVM) is proposed. Firstly, the wheel hub images under three different lighting conditions are collected, and the wheel hub images are processed in grayscale;Secondly, the positive and negative samples are made, and hog features are extracted, respectively;Finally, the extracted hog features are trained by SVM classifier, and the trained target classifier is used to recognize the wheel hub photos under three different lighting conditions. The experimental results show that this method has higher recognition accuracy than the traditional template matching method under different lighting conditions. © 2022 IEEE.

关键词： Support vector machines

来源：评论

学校读者我要写书评

暂无评论

The Influence of Overcharging and Over-Discharging on the Capacity Degradation of Lithium-Ion Batteries

The Influence of Overcharging and Over-Discharging on the Ca...

引用

IEEE Conference on Vehicle Power and Propulsion (VPPC)

作者： Joelton Deonei Gotz Marco Antonio Simões Teixeira Fernanda Cristina Corrêa Emilson Ribeiro Viana Alceu André Badin Milton Borsato Graduate Program in Electrical and Computer Engineering Federal Technological University of Paraná (UTFPR-CT) Curitiba Brazil Graduate Program in Informatics (PPGIa) Pontifical Catholic University of Paraná (PUC-PR) Curitiba Brazil Graduate Program in Electrical Engineering Federal Technological University of Paraná (UTFPR-PG) Ponta Grossa Brazil Physics Department Graduate Program in Physics and Astronomy Federal Technological University of Paraná (UTFPR-CT) Curitiba Brazil Graduate Program in Mechanical Engineering Federal Technological University of Paraná (UTFPR-CT) Curitiba Brazil

ISBN: (数字)9798331541606

ISBN: (纸本)9798331541613

Lithium-ion batteries (LIB) are the best technology for supplying and storing energy for electric mobility systems. Despite that, this technology is sensitive to abuses that can compromise its lifetime and cause fire and explosion risks. In this context, if LIB is not correctly controlled, some abuses, such as overcharging (OC) and over-discharging (OD), can be observed and provoke a loss of capacity. Therefore, this work presented the application of several experiments in cells, of the NMC type, under OC and the combination of OC and OD. The results indicated that cells charged until 4.4 and 4.5 V and discharged until 3.0 V do not lose capacity for twenty-five cycles, but more cycles should be done to understand the impact over time. On the other side, the cell charged until 4.6 and 4.8 V had its security protection romped in the fourth charging cycle, and the cell charged until 5.0 V had its safety compromised in the first charging cycle. Conversely, cells with a combination of OC and OD were more compromised. In this context, while a cell is submitted only with OC and does not lose capacity, a cell under OC and then under OD had its protection romped in the third charging cycle. Cells under 4.6 V and 4.8 V lost capacity during the second charging cycle. In conclusion, OC provokes a high level of degradation in the cell, but the combination of OC and OD causes even more degradation.

关键词： Degradation Lithium-ion batteries Battery management systems Propulsion Security Reliability Protection Stress Monitoring Predictive maintenance

来源：评论

学校读者我要写书评

暂无评论

An Online Application of Edge-Cloud Computing for Lithium-Ion Battery with SOC Estimation

An Online Application of Edge-Cloud Computing for Lithium-Io...

引用

IEEE Conference on Vehicle Power and Propulsion (VPPC)

作者： Joelton Deonei Gotz João Pedro dos Reis Mendes José Rodolfo Galvão Emilson Ribeiro Viana Fernanda Cristina Corrêa Milton Borsato Graduate Program in Mechanical Engineering (PPGEM) Federal Technological University of Paraná Curitiba-PR Brazil Graduate Program in Electrical Engineering (PPGEE) Federal Technological University of Paraná Ponta Grossa-PR Brazil Graduate Program in Physics and Astronomy (PPGFA) Federal Technological University of Paraná Curitiba-PR Brazil

The adoption of cloud and edge computing for several application motivates the monitoring and controlling a Lithium-ion batteries (LIB) online and remotely. In these scenarios, this work presents a case of study by the application of a hybrid concept of edge-cloud computing. The edge collects the data from the cells and sent directly to the cloud where several Machine Learning algorithms can be built, trained and tested. Then, the trained models are downloaded to the edge and do inferences in real time. The proposed idea presented still an SOC estimator based on Long Short-Term Memory (LSTM) with average error below 5%.

关键词：

来源：评论

学校读者我要写书评

暂无评论

Simultaneous orthogonal shearography using two pairs of parallel slits and a tetra-split lens 13

Simultaneous orthogonal shearography using two pairs of para...

引用

Optical Measurement Systems for Industrial Inspection XIII 2023

作者： Lima, Tainara Pedrosa Barrera, Estiven Sánchez de Oliveira, Bernardo C.F. Armando Albertazzi, G. Graduate Program in Mechanical Engineering Technological Center Federal University of Santa Catarina PO Box 476 - University Campus Trindade SC Florianópolis88040-900 Brazil Universidad Tecnológica de Bolívar Bolivar Cartagena Colombia

ISBN: (数字)9781510664463

ISBN: (纸本)9781510664456

There are a growing number of industrial applications for shearography, especially in non-destructive testing of composite materials. Its tolerance to hostile environments is probably the most relevant success factor for industrial applications. The introduction of carrier fringes for phase recovery, replacing temporal phase shift techniques, allows measurements with a single exposure for each loading state, making shearography even more robust. Some defects are better evident when the shearing direction is horizontal. Others are best viewed with a vertical shearing direction. Thus, it is desirable to inspect in both directions. Fortunately, the literature reports some configurations capable of using carrier fringes to perform simultaneous measurements in more than one shearing direction. These systems work well, but since they use a mask with circular holes, they require a high amount of light. An alternative is the use of a pair of oblong slits, which increases the amount of light captured. This paper extends the use of oblong slit pairs for simultaneous measurement in two orthogonal shearing directions. Two pairs of parallel oblong slits are arranged orthogonally on the system mask. Although the Fourier transform of the resulting signal at the camera sensor contains the desired signals as well as a crosstalk between the slit pairs. However, the mask can be designed in such a way that the orthogonal signals are separable. To promote shearing in orthogonal directions, a polymeric lens was sectioned, forming four quadrants of 90°. The quadrants were radially displaced and arranged so that each oblong slit covers only one quadrant of the lens. As a result, four laterally shifted images are formed, two of them with horizontal shearing and the other two with vertical shearing. A proof-of-concept prototype was developed and the first results were evaluated by the authors in the laboratory environment and are presented in this article. The paper also shows details of the

关键词： Lenses

来源：评论

学校读者我要写书评

暂无评论

The influence of industrial work practices and workshop infrastructure facilities on work readiness of students 6

The influence of industrial work practices and workshop infr...

引用

6th International Conference on Technology and Vocational Teachers, ICTVT 2020

作者： Setyadi, M.R.A. Triyono, M.B. Daryono, R.W. Graduate Program of Technological and Vocational Education Universitas Negeri Yogyakarta Yogyakarta Indonesia Department of Mechanical Engineering Education Faculty of Engineering Universitas Negeri Yogyakarta Yogyakarta Indonesia

This study aims to determine the influence of industrial work practice and workshop facilities on work readiness in class XI mechanical engineering. The research subjects were 101 students of class XI mechanical engineering, using the ex post facto research method using statistical analysis using the SPSS program. The results of the study are as follows: (1) Industrial work practices have a positive effect on job readiness with a significance of 0.000, a determination coefficient of 30% has an effect;(2) Workshop infrastructure has a positive influence on work readiness with a significance value of 0.000, 28.6% determination efficiency has an effect;(3) Industrial work practices and infrastructure together have an influence on job readiness indicated by a significance value of 0.000 having a coefficient of determination 58,6% in influencing job readiness. © Published under licence by IOP Publishing Ltd.

关键词： engineering research

来源：评论

学校读者我要写书评

暂无评论

A comprehensive evaluation of the use of graphene enriched cutting fluids on the surface integrity of very poor-grindability materials

引用

Wear 2025年

作者： de Oliveira, Déborah de Paiva, Raphael Lima de Souza Ruzzi, Rodrigo Jackson, Mark James Gelamo, Rogério Valentim Machado, Alisson Rocha da Silva, Rosemar Batista University of Brasília Department of Mechanical Engineering DF Brasília Brazil Federal University of Piauí School of Mechanical Engineering PI Teresina Brazil Federal University of Uberlandia School of Mechanical Engineering MG Uberlandia Brazil Kansas State University College of Technology and Aviation SalinaKS United States Federal University of Triângulo Mineiro Institute of Technological and Exact Sciences MG Uberaba Brazil Pontifícia Universidade Católica do Paraná Mechanical Engineering Graduate Program PR Curitiba Brazil

The use of graphene has stood out in recent years in different fields due to the wide applicability based on its properties. Specifically, multilayer graphene can be highlighted as a good lubricant, it possesses low shear resistance between layers and has good thermal conductivity. Those characteristics are well suitable for cutting fluids, especially considering the grinding process which presents high friction, elastic and plastic deformations, and the intense occurrence of plowing, thereby resulting in high specific cutting energy. However, studies have shown the use of graphene on cutting fluids can be influenced by many factors, including delivery methods, particle concentrations and even the workpiece material. Thus, a comprehension of how graphene particles added to the cutting fluid interact at the abrasive-chip interface is important for its correct use and the achievement of high-quality surfaces. In this sense, this work aims to investigate the use of multilayer graphene enhanced cutting fluids delivered during the grinding process for three different very poor-grindability materials: Inconel 625, Inconel 718 and SAE 52100 hardened steel. Different multilayer graphene concentrations (0.05–0.1 wt%) were added in the same base fluid and tested under different flow rates. The influence of graphene was assessed in terms of grinding power, surface roughness and morphology (SEM images). The experimental results showed that for the lower hardness material (Inconel 625), graphene promoted intense plowing and adhered material on the ground surface, while for the SAE 52100 steel, minor effects were generated on the surface affecting its integrity. For Inconel 718, that possesses both high hardness and ductile responses, the presence of graphene in the cutting fluid provides a great improvement in cutting, resulting in 15 % and 27 % reduction in surface roughness values and grinding power, respectively, even for a low cutting fluid flow rate. © 2025 Elsevier B.V.

关键词： Grinding (machining)

来源：评论

学校读者我要写书评

暂无评论

Using a simulation model to guide a new field measurement method with higher reproducibility for standard floor-ceiling impact test methods 30

Using a simulation model to guide a new field measurement me...

引用

30th International Conference on Noise and Vibration engineering, ISMA 2022 and 9th International Conference on Uncertainty in Structural Dynamics, USD 2022

作者： Girdhar, S. Barnard, A. Blough, J. LoVerde, J. Dong, W. Michigan Technological University Department of Mechanical Engineering HoughtonMI49931 United States Pennsylvania State University Graduate Program in Acoustics State CollegePA16801 United States Veneklasen Associates Inc. 1711 16th St Santa MonicaCA90404 United States

ISBN: (纸本)9789082893151

The standard impact test methods for floor-ceiling assemblies defined in ISO and ASTM suffer from non-reproducibility issues. One of the biggest factors of test non-reproducibility is the existence of non-diffuse sound field at low-frequencies which are a part of the standard frequency bandwidth. This causes a disconnect between objective ratings and subjective reaction of the residents. We are developing a new measurement method that will not depend on the room diffusivity conditions and will therefore improve the reproducibility of the test method. The work presented here is a preliminary analysis using a vibro-acoustic simulation model to analyze different measurement iterations. In the future, the iterations that show promise will be tested on real structures and compared with the existing standard measurement methods. © 2022 Proceedings of ISMA 2022 - International Conference on Noise and Vibration engineering and USD 2022 - International Conference on Uncertainty in Structural Dynamics. All rights reserved.

关键词： Floors

来源：评论

学校读者我要写书评

暂无评论

The Effect of Alkaline Treatment on mechanical Properties of Carnauba Straw

SSRN

引用

SSRN 2023年

作者： de Melo Neta, M.M. Fernandes de Sousa Rios, M.A. Cáceres, C.A. Department of Mechanical Engineering Group of Technological Innovations and Chemical Specialties Federal University of Ceará Fortaleza60440-554 Brazil Chemical Engineering Graduate Program Federal University of Ceará Fortaleza60455-760 Brazil Institute of Engineering and Sustainable Development University for International Integration of the Afro-Brazilian Lusophony RedencãoCEP 62790-970 Brazil

This work aimed to analyze the mechanical properties of the carnauba straw before and after alkaline treatment with aqueous solutions of 1, 3, and 6 % of NaOH (w/w). The samples were analyzed to determine mechanical properties. The untreated dried straws showed an elastic modulus of 4 GPa, and after the chemical treatment, this value increased by around 20 to 30 %, depending on the NaOH concentration. On the other hand, toughness and elongation at break properties showed a different tendency for treated samples, occurring a reduction for the higher concentrations of NaOH. However, these results follow other natural fibers already used in polymeric composites. According to the results, carnauba straw has the potential to be applied in the composite development industry, and this contributes to adding value to a biowaste obtained from carnauba wax extraction, a significant product of Brazil's northeast. © 2023, The Authors. All rights reserved.

关键词： Tensile strength

来源：评论

学校读者我要写书评

暂无评论

Cellulose processing using ionic liquids: An analysis of patents and technological trends

引用

Heliyon 2024年第20期10卷 e39590页

作者： Vieira, Suellen Rocha Silva, Jania Betânia Alves da Pessôa, Luiggi Cavalcanti Nascimento, Renata Quartieri Galván, Karina Lizzeth Pedraza Souza, Carolina Oliveira de Cardoso, Lucas Guimarães Santana, Jamille Santos Assis, Denilson de Jesus Graduate Program in Chemical Engineering (PPEQ) Polytechnic School Federal University of Bahia (UFBA) Bahia Salvador 40210-630 Brazil Center for Exact and Technological Sciences Collegiate of Mechanical Engineering Federal University of Recôncavo of Bahia (UFRB) Bahia Cruz das Almas 44380-000 Brazil Graduate Program in Biotechnology-Northeast Biotechnology Network (RENORBIO) Federal University of Bahia (UFBA) Bahia Salvador 40231-300 Brazil Graduate Program in Food Science (PGAli)–College of Pharmacy Federal University of Bahia (UFBA) Bahia Salvador 40110-100 Brazil Department of Bromatological Analysis College of Pharmacy Federal University of Bahia (UFBA) Bahia Salvador 40110-100 Brazil Department of Engineering University Salvador (UNIFACS) Bahia Salvador 41820-021 Brazil

The production of cellulose derivatives using ionic liquid (IL) as solvents and catalysts has become prominent over the last few years, since the process eliminates the use of toxic substances. This study aimed to map and understand the trends in cellulose processing using ILs by a patent analytic approach and technology life cycle modeling. The documents were searched on the Espacenet® and Orbit® *** majority of innovations have come from companies based in developed countries. The data fitted to the sigmoid BiDoseResp model and the life cycle S-curve showed a market in an early stage of maturity. This mapping brings information that subsidizes decision-making regarding investments, research, and innovations aimed at IL-mediated cellulose treatment. Potential markets mostly use ILs of the imidazolium family in polymer chemistry, machinery, and biotechnology technologies. However, medical and pharmaceutical technologies and microstructure and nanostructure applications are still emerging, fostering perspectives for innovation. © 2024

关键词： Cellulose Dissolution Ionic liquids Mathematical model Patents

来源：评论

学校读者我要写书评

暂无评论

Technology Roadmap for Flexible Sensors

引用

ACS NANO 2023年第6期17卷 5211-5295页

作者： Luo, Yifei Abidian, Mohammad Reza Ahn, Jong-Hyun Akinwande, Deji Andrews, Anne M. Antonietti, Markus Bao, Zhenan Berggren, Magnus Berkey, Christopher A. Bettinger, Christopher John Chen, Jun Chen, Peng Cheng, Wenlong Cheng, Xu Choi, Seon-Jin Chortos, Alex Dagdeviren, Canan Dauskardt, Reinhold H. Di, Chong-an Dickey, Michael D. Duan, Xiangfeng Facchetti, Antonio Fan, Zhiyong Fang, Yin Feng, Jianyou Feng, Xue Gao, Huajian Gao, Wei Gong, Xiwen Guo, Chuan Fei Guo, Xiaojun Hartel, Martin C. He, Zihan Ho, John S. Hu, Youfan Huang, Qiyao Huang, Yu Huo, Fengwei Hussain, Muhammad M. Javey, Ali Jeong, Unyong Jiang, Chen Jiang, Xingyu Kang, Jiheong Karnaushenko, Daniil Khademhosseini, Ali Kim, Dae-Hyeong Kim, Il-Doo Kireev, Dmitry Kong, Lingxuan Lee, Chengkuo Lee, Nae-Eung Lee, Pooi See Lee, Tae-Woo Li, Fengyu Li, Jinxing Liang, Cuiyuan Lim, Chwee Teck Lin, Yuanjing Lipomi, Darren J. Liu, Jia Liu, Kai Liu, Nan Liu, Ren Liu, Yuxin Liu, Yuxuan Liu, Zhiyuan Liu, Zhuangjian Loh, Xian Jun Lu, Nanshu Lv, Zhisheng Magdassi, Shlomo Malliaras, George G. Matsuhisa, Naoji Nathan, Arokia Niu, Simiao Pan, Jieming Pang, Changhyun Pei, Qibing Peng, Huisheng Qi, Dianpeng Ren, Huaying Rogers, John A. Rowe, Aaron Schmidt, Oliver G. Sekitani, Tsuyoshi Seo, Dae-Gyo Shen, Guozhen Sheng, Xing Shi, Qiongfeng Someya, Takao Song, Yanlin Stavrinidou, Eleni Su, Meng Sun, Xuemei Takei, Kuniharu Tao, Xiao-Ming Tee, Benjamin C. K. Thean, Aaron Voon-Yew Trung, Tran Quang Wan, Changjin Wang, Huiliang Wang, Joseph Wang, Ming Wang, Sihong Wang, Ting Wang, Zhong Lin Weiss, Paul S. Wen, Hanqi Xu, Sheng Xu, Tailin Yan, Hongping Yan, Xuzhou Yang, Hui Yang, Le Yang, Shuaijian Yin, Lan Yu, Cunjiang Yu, Guihua Yu, Jing Yu, Shu-Hong Yu, Xinge Zamburg, Evgeny Zhang, Haixia Zhang, Xiangyu Zhang, Xiaosheng Zhang, Xueji Zhang, Yihui Zhang, Yu Zhao, Siyuan Zhao, Xuanhe Zheng, Yuanjin Zheng, Yu-Qing Zheng, Zijian Zhou, Tao Zhu, Bowen Zhu, Ming Zhu, Rong Zhu, Yangzhi Zhu, Yong Zou, Guijin Chen, Xiaodong 08-03 Innovis Singapore 138634 Republic of Singapore Innovative Centre for Flexible Devices (iFLEX) School of Materials Science and Engineering Nanyang Technological University Singapore 639798 Singapore Department of Biomedical Engineering University of Houston Houston Texas 77024 United States School of Electrical and Electronic Engineering Yonsei University Seoul 03722 Republic of Korea Department of Electrical and Computer Engineering The University of Texas at Austin Austin Texas 78712 United States Microelectronics Research Center The University of Texas at Austin Austin Texas 78758 United States Department of Chemistry and Biochemistry California NanoSystems Institute and Department of Psychiatry and Biobehavioral Sciences Semel Institute for Neuroscience and Human Behavior and Hatos Center for Neuropharmacology University of California Los Angeles Los Angeles California 90095 United States Colloid Chemistry Department Max Planck Institute of Colloids and Interfaces 14476 Potsdam Germany Department of Chemical Engineering Stanford University Stanford California 94305 United States Laboratory of Organic Electronics Department of Science and Technology Campus Norrköping Linköping University 83 Linköping Sweden Wallenberg Initiative Materials Science for Sustainability (WISE) and Wallenberg Wood Science Center (WWSC) SE-100 44 Stockholm Sweden Department of Materials Science and Engineering Stanford University Stanford California 94301 United States Department of Biomedical Engineering and Department of Materials Science and Engineering Carnegie Mellon University Pittsburgh Pennsylvania 15213 United States Department of Bioengineering University of California Los Angeles Los Angeles California 90095 United States School of Chemistry Chemical Engineering and Biotechnology Nanyang Technological University Singapore 637457 Singapore Nanobionics Group Department of Chemical and Biological Engineering Monash University Clayton Australia 3800 Monash

Humans rely increasingly on sensors to address grand challenges and to improve quality of life in the era of digitalization and big data. For ubiquitous sensing, flexible sensors are developed to overcome the limitations of conventional rigid counterparts. Despite rapid advancement in bench-side research over the last decade, the market adoption of flexible sensors remains limited. To ease and to expedite their deployment, here, we identify bottlenecks hindering the maturation of flexible sensors and propose promising solutions. We first analyze continued...challenges in achieving satisfactory sensing performance for real-world applications and then summarize issues in compatible sensor-biology interfaces, followed by brief discussions on powering and connecting sensor networks. Issues en route to commercialization and for sustainable growth of the sector are also analyzed, highlighting environmental concerns and emphasizing nontechnical issues such as business, regulatory, and ethical considerations. Additionally, we look at future intelligent flexible sensors. In proposing a comprehensive roadmap, we hope to steer research efforts towards common goals and to guide coordinated development strategies from disparate communities. Through such collaborative

关键词： soft materials mechanics engineering flexible electronics conformable sensors bioelectronics human-machine interfaces body area sensor networks technology translation sustainable electronics

来源：评论

学校读者我要写书评

暂无评论

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案：

请选择收藏分类：

通借通还

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：