检索结果-内蒙古大学图书馆

Modeling crystallographic anisotropy in interfacial sliding phenomenon in nanoindentation of nanoscale Cu/Nb accumulated rolling bonding (ARB) multilayered materials

引用

AIP Conference Proceedings 2023年第1期2594卷

作者： A. S. Budiman R. Sahay F. E. Gunawan C. Harito H. Gunawan I. Radchenko E. Navarro S. Escoubas T. Cornelius O. Thomas N. Raghavan Industrial Engineering Department BINUS Graduate Program – Master of Industrial Engineering Bina Nusantara University Jakarta Indonesia Xtreme Materials Lab Engineering Product Development Singapore University of Technology and Design (SUTD) Singapore Industrial Engineering Department Faculty of Engineering Bina Nusantara University Jakarta Indonesia 11480 Center for Advancing Materials Performance from the Nanoscale (CAMP-nano) State Key Laboratory for Mechanical Behavior of Materials Xi'an Jiaotong University (XJTU) Xi'an China Aix-Marseille Université CNRS IM2NP UMR 7334 Marseille France

Nanoindentation is widely used to investigate mechanical properties of materials at small scales. In this work, owing to the presence of contrasting interfaces along rolling (RD) and transverse direction (TD), a 16 nm accumulative roll bonding (ARB) Cu/Nb nanolaminate as a test material due to its crystallographic anisotropy was used. Nanoindentation was performed and then Scanning Probe Microscopy (SPM) data was conducted to measure the pile-up height along RD and TD in the nanoscale Cu/Nb multilayered materials. It was found that the 16 nm Cu/Nb ARB nanolayered material along RD showed higher surface pile-up than TD attributed the observation to the variation in the Cu/Nb interface plasticity along RD and TD. Further, a comparation and validation of experimental indentation data by performing 2D axisymmetric Finite Element Analysis (FEA) indicated that the simulation compares well with the experimentally generated load-displacement curves, while qualitative agreement was obtained with the pileup data. It is believed that the characterization of surface pile-up is very important for enabling the nanoscale Cu/Nb ARB nanolaminates as the novel stretchable/flexible metallic conductor materials (with emerging applications such as e-skins, human-computer interaction, and soft robotics) that may prove crucial for the global green and sustainability efforts (soft robots for collecting plastic trashes in ocean).

关键词：

来源：评论

学校读者我要写书评

暂无评论

Angle control of antagonistic pneumatic driven and inflatable arm joint 17

Angle control of antagonistic pneumatic driven and inflatabl...

引用

17th IEEE International Conference on Industrial Informatics, INDIN 2019

作者： Ogasawara, Hirofusa Yokota, Sho Matsumoto, Akihiro Chugo, Daisuke Hashimoto, Hiroshi Toyo University Graduate School of Science and Eng. Kawagoe Japan Toyo University Dept. of Mechanical Engineering Kawagoe Japan Kwansei Gakuin University School of Science and Technology Hyogo Japan Advanced Institute of Industrial Technology Master Program of Innovation for Design and Eng. Tokyo Japan

ISBN: (纸本)9781728129273

The conventional robot arms applied in various fields are demanded to have high force output, high accuracy, high efficiency. But they are seldom applied in human life, because of large weight, rigidity, hazards to people caused by collisions. Therefore the soft robotic arm that is stretchable, light weight, softness without possible of hazards, and high precision control is suitable to deploy in human life. Thus the purpose of this research is to develop the soft robotic arm by using antagonistic pneumatic driven system. In order to realize this concept, the joint activation mechanism is the key component. This study focuses on the angle control of the joint. In this paper, the robot arm made by polyethylene is proposed. Air bags made of polyethylene inside the joint achieve antagonistic driven states. Helical tube made of polyethylene is adhered joint outside for realizing rigidity. It is characterized that control rigidity is realized by controlling the pressure in the helical tube and joint angle is preciously controlled in two degree of freedom by controlling pressure in the air bags. Furthermore, the joint angle can be controlled by controlling the air pressures in the air bags using stretch sensor measuring joint angle. The experimental result confirmed that the driving concept of the joint was well functioned, and the joint angle control was realized by feedback control. © 2019 IEEE.

关键词： Robotic arms

来源：评论

学校读者我要写书评

暂无评论

Biomechanical Study of Different Femoral Fixation Devices in the Reconstruction of the Medial Patellofemoral Ligament in Porcine Knees

引用

Revista Brasileira de Ortopedia 2020年第6期55卷 771-777页

作者： Dobke, Lothar Schmechel Bonadiman, João Artur Lopes, Osmar Valadão Saggin, Paulo Renato Israel, Charles Leonardo Spinelli, Leandro De Freitas Knee Surgery Service Instituto de Ortopedia e Traumatologia (IOT) Hospital São Vicente de Paulo (HSVP) Universidade Federal da Fronteira sul (UFFS) Passo Fundo RS Brazil Orthopedics and Traumatology Service Santa Casa de Misericórdia de Porto Alegre Rs Universidade de Passo Fundo RS Brazil Department of Mechanical Engineering Universidade de Passo Fundo Passo Fundo RS Brazil Graduate Program in Design and Manufacturing Processes Universidade de Passo Fundo Passo Fundo RS Brazil Department of Surgical Clinic Universidade Federal de Ciências da Saúde de Porto Alegre Porto Alegre RS Brazil

Objective: To evaluate different femoral fixation devices for medial patellofemoral ligament reconstruction and compare their effectiveness regarding fixation strength up to failure in porcine knees. Methods: Thirty porcine knees were used, divided into three groups of 10 knees. The removed grafts were dissected from the extensor tendons of porcine feet. In each group, the graft was fixed to the femur with an interference screw, an anchor, or adductor tenodesis. The three methods were subjected to biomechanical tests using a universal Tensile testing machine at a speed of 20 mm/minute. Results: The highest average linear resistance under lateral traction occurred in group 1, screw fixation (185.45 ± 41.22 N), followed by group 2, anchor fixation (152.97 ± 49, 43 N);the lower average was observed in group 3, tenodesis fixation (76.69 ± 18.90 N). According to the fixed error margin (5%), there was a significant difference between groups (p < 0.001);in addition, multiple comparison tests (between group pairs) also showed significant differences. Variability was small, since the variance coefficient was lower than 33.3%. Conclusion: Interference screws in bone tunnels and mountable anchors fixation with high resistance wire are strong enough for femoral fixation in porcine medial patellofemoral ligament reconstruction. Adductor tenodesis, however, was deemed fragile for such purpose. © 2020 Georg Thieme Verlag. All rights reserved.

关键词： animal models biomechanical phenomena joint ligaments orthopedic fixation devices patellofemoral joint suture technique

来源：评论

学校读者我要写书评

暂无评论

Evaluation Analysis on Gambling Industry Establishment In Cultural Heritage Domain – Taiwan Kinmen As Case Study 7th

引用

7th International Conference on Kansei engineering and Emotion Research, KEER 2018

作者： Hsu, Kuo-Wei Feng, Shih-Jen Chao, Nai-Chia Chang, Chien-Chi Department of Industrial Design Chaoyang University of Technology Taichung41349 Taiwan Department of Architecture Chaoyang University of Technology Taichung41349 Taiwan Graduate Institute of Architecture and Urban Design Chaoyang University of Technology Taichung41349 Taiwan Program of Mechanical and Aeronautical Engineering Chaoyang University of Technology Taichung40724 Taiwan

ISBN: (纸本)9789811086113

Preservations and utilization of culture asset is one out of most discussed issues worldwide, whether it is tangible or intangible cultural asset. The emphasis on inherited human-oriented memories, through influential and important of story-telling is vital. If the cultural asset was being redeveloped and managed inappropriately, it will disengage the main concept of preserving cultural asset, affecting local culture and its historical heritage, which may lead to poor maintenance, or in contrast, an excessive commercialization on cultural assets. Kinmen, offshore island of Taiwan, contains the most cultural asset in Taiwan. It has preserved traditional Minnan tribe culture in their lives and buildings. They work hard to protect, repair, and introduce their culture, letting others experience their ancestor’s smart living and feel the dynamic of local people in passing down their cultural heritage. Alongside its rich cultural heritage, Kinmen has turned from being a "sad heritage" (confrontation, war, and tragedy) into an "inspiring heritage" (reconcile, peace and reborn) and serves as a guidance and an inspiration for us in searching the value of peace. Based on Kinmen’s importance on Minnan cultural heritage and the possible impacts of the gambling industry on cultural assets, this research will be using Kinmen as a study subject and organize its cultural assets by utilizing AHP analysis values with discussion of the gambling industry’s impact;then taking further to drive the diversity of impacts by using FDM analysis. © 2018, Springer Nature Singapore Pte Ltd.

关键词： Offshore oil well production

来源：评论

学校读者我要写书评

暂无评论

Improvement of the ungrounded force display using grooved cam

Improvement of the ungrounded force display using grooved ca...

引用

IEEE International Conference on Industrial Informatics (INDIN)

作者： Emi Kakuda Sho Yokota Akihiro Matsumoto Daisuke Chugo Hiroshi Hashimoto Graduate School of Science and Eng Toro University Kawagoe Japan Dept. of Mechanical Engineering Toyo University Kawagoe Japan School of Science and Technology Kwansei Gakuin University Hyogo Japan Master Program of Innovation for Design and Eng. Advanced Institute of Industrial Technology Tokyo Japan

This paper proposes the ungrounded force display using the grooved cam. Using the human illusion, the user can feel the force in the one direction when they use proposed device. It is mainly configured the cam and the slider. The slider follows the cam and moves translational movement. In this paper, we create the new prototype which solving the problems that emerged from the previous prototype. We evaluate the device using the two experiments. One is the subjective evaluation. Second one is the force presentation from the new prototype as the quantitative evaluation. We could solve problems of previous prototype by changing the cam type from plate to groove and blushless motor, and the new one produce the force more clearly than the previous prototype.

关键词：

来源：评论

学校读者我要写书评

暂无评论

Angle Control of Antagonistic Pneumatic Driven and Inflatable Arm Joint

Angle Control of Antagonistic Pneumatic Driven and Inflatabl...

引用

IEEE International Conference on Industrial Informatics (INDIN)

作者： Hirofusa Ogasawara Sho Yokota Akihiro Matsumoto Daisuke Chugo Hiroshi Hashimoto Graduate School of Science and Eng. Toyo University Kawagoe Japan Dept. of Mechanical Engineering Toyo University Kawagoe Japan School of Science and Technology Kwansei Gakuin University Hyogo Japan Master Program of Innovation for Design and Eng. Advanced Institute of Industrial Technology Tokyo Japan

关键词：

来源：评论

学校读者我要写书评

暂无评论

The effect of wavelength on a floating body and its location for wave energy absorption using CFD 28

The effect of wavelength on a floating body and its location...

引用

28th International Ocean and Polar engineering Conference, ISOPE 2018

作者： Kim, Hyunjong Parthasarathy, Nanjundan Li, Kui Ming Choi, Yoon Hwan Oshima, Nobuyuki Lee, Yeon Won Interdisciplinary program of Biomedical Mechanical and Electrical Engineering Pukyong National University Busan Korea Republic of Korea Marine Equipment Research Institute Busan Korea Republic of Research Institute of Industrial Science and Technology Pukyong National University Busan Korea Republic of Graduate School of Engineering Hokkaido University Sapporo Hokkaido Japan Department of Mechanical Design Engineering Pukyong National University Busan Korea Republic of

ISBN: (纸本)9781880653876

In order to design a wave energy generating system of a floating type, a 6- Degrees Of Freedom (DOF) motion technique was applied to Computational Fluid Dynamics (CFD) analysis on this floating body and the behavior is interpreted according to the nature of the incoming waves. In the numerical study, the tuning factor concept is employed, as it explains the relation between the maximum pitch angle and the length of the floating body and wavelength. The relation between tuning factor & pitch period for the generated waves is compared to analyze the effects of wave energy absorption. Linear waves are generated in a tank model using a single floater. In this paper, we focus on wavelength of a floater and 14 cases have been modeled for the same. It was found that the wave energy absorption varies in different parameters of wavelengths and also the different locations of the floating body in a wave affect the wave energy absorption, thus necessitating the importance of the location of a floater in a wave and its effect on wave energy absorption. Copyright © 2018 by the International Society of Offshore and Polar Engineers (ISOPE)

关键词： Computational fluid dynamics

来源：评论

学校读者我要写书评

暂无评论

Recycling Of PP/LDPE blend: Miscibility, thermal properties, rheological behavior and crystal structure 74

Recycling Of PP/LDPE blend: Miscibility, thermal properties,...

引用

74th Annual Technical Conference and Exhibition of the Society of Plastics Engineers, SPE ANTEC Indianapolis 2016

作者： Aumnate, Chuanchom Spicker, Claudia Kiesel, Raphael Samadi, Majid Rudolph, Natalie Mechanical Engineering Department Polymer Engineering Center University of Wisconsin-Madison WI United States Textile Science Department of Design Studies and Materials Science Graduate Program University of Wisconsin-Madison WI United States

ISBN: (纸本)9780692719619

Blending of plastics used in packaging is an interesting approach for recycling or upcycling. Therefore, this study focused on the effects of processing on the properties of recycled PP and PP/LDPE blends. MFI measurements, Differential Scanning Calorimetry (DSC) and hot-stage polarized optical microscopy techniques were used to investigate the miscibility of PP/LDPE blends based on the thermal properties, degree of crystallinity, crystallization and morphology development in the blends. The MFI indicates, that PP and PP/LDPE blends are marginally sensitive to degradation at common processing conditions. The degree of crystallinity of the blends decreases with an increase of the LDPE content. Furthermore, the spherulite growth rate and crystal size of PP decrease with an increase of LDPE content. The shifts of crystallization temperatures from the DSC measurement, in conjunction with the crystallization kinetics, indicate that PP/LDPE (25 wt% LDPE) is partially miscible.

关键词： Crystal structure

来源：评论

学校读者我要写书评

暂无评论

A driving assistance for a powered wheelchair with a walking partner

A driving assistance for a powered wheelchair with a walking...

引用

IEEE International Conference on Industrial Technology (ICIT)

作者： Tsukasa Kobayashi Daisuke Chugo Sho Yokota Satoshi Muramatsu Hiroshi Hashimoto Graduate School of Science and Technology Kwansei Gakuin University Sanda Hyogo Japan School of Information Science and Technology Tokai University Hiratsuka Kanagawa Japan Department of Mechanical Engineering Toyo University Kawagoe Saitama Japan Master Program of Innovation for Design and Engineering Advanced Institute of Industrial Technology Tokyo Japan

ISBN: (纸本)9781467380768

Accompanying a person is one of the core capacities of a personal mobility vehicle and demands a smooth movement function with collision avoidance. In previous studies on a personal mobility vehicle, a vehicle moves in synchrony with a walking partner. However, in some cases, especially where potentially dangerous obstacles appear in the environment, a vehicle should lead its partner. In this case, a vehicle that leads its partner in appropriate environments should also enable smoother and more effective movement with the partner. This, this study aims to develop a motion design that realizes smooth cooperative movement with a human partner for a personal mobility vehicle. Our proposed vehicle not only estimates its partner's intention and moves accordingly but also reveals its own intention to the partner. To realize this objective, we investigate conditions that induce the partner's movements and propose a motion design that follows the partner's intended movement. Our proposed method is installed in our omni-directional prototype vehicle and evaluated its effectiveness in experiments.

关键词： Vehicles Legged locomotion Prototypes Force Wheelchairs Estimation

来源：评论

学校读者我要写书评

暂无评论

Towards a Robotic Knee Exoskeleton Control Based on Human Motion Intention through EEG and sEMGsignals

引用

Procedia Manufacturing 2015年 3卷 1379-1386页

作者： Villa-Parra, A.C. Delisle-Rodríguez, D. López-Delis, A. Bastos-Filho, T. Sagaró, R. Frizera-Neto, A. Post-Graduate Program in Electrical Engineering Universidade Federal do Espírito Santo Vitória Brazil GIIB Universidad Politécnica Salesiana Cuenca Ecuador Center of Medical Biophysics Universidad de Oriente Santiago Cuba Mechanical and Design Engineering Department Universidad de Oriente Santiago Cuba

The integration of lower limb exoskeletons with robotic walkers allows obtaining a system to improve mobility and security during gait rehabilitation. In this work, the evaluation of human motion intention (HMI) based on electroencephalogram (EEG) and surface electromyography (sEMG) signals are analyzed for a knee exoskeleton control as a preliminary study for gait neuro-rehabilitation with a hybrid robotic system. This system consists of the knee exoskeleton H2 and the UFES's Smart Walker, which are used to restore the neuromotor control function of subjects with neural injuries. An experimental protocol was developed to identify patterns to control the exoskeleton in accordance with the HMI-based on EEG/sEMG. The EEG and sEMG signals are recorded during the following activities: stand-up/sit-down and knee flexion/extension. HMI is analyzed through both event-related desynchronization/synchronization (ERD/ERS) and slow cortical potential, as well as the myoelectric pattern classification related to lower limb. The feature extraction from sEMG signals is based on vector combinations in time and frequency domain which are used for a pattern classification stage trough an artificial neural network with Levenberg Marquadt training algorithm and support vector machine. Preliminary results shown that a combination of EEG/sEMG signals can be used to define a control strategy for the robotic system. © 2015 The Authors

关键词： EEG Human-motion-intention Knee exoskeleton Pattern recognition sEMG

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：