Article
Mechanics
E. Akbari, H. Khajehsaeid, R. Asiaban
Summary: Magnetorheological fluids (MRFs) exhibit variable mechanical properties in response to magnetic stimuli and can be utilized in various applications such as torque transmission devices like clutches. This study investigates the geometrical design of cylindrical MR clutches to optimize torque transmission capability. The effects of design parameters and MRF volume are examined in the presence of different magnetic fields. It is found that increasing the clutch's inner radius and using an MRF with higher particle content can enhance the transmitted torque.
INTERNATIONAL JOURNAL OF APPLIED MECHANICS
(2022)
Article
Instruments & Instrumentation
Manuel Alejandro Fernandez, Jen-Yuan (James) Chang
Summary: This article explores the factors influencing the torque transmission capability of a permanent magnet-based MRF clutch, including the number of magnetic poles, clutch material, MRF layer thickness, and relative rotational velocity. Experimental results show that fewer magnetic poles lead to higher torque output, but magnetic saturation reduces the effectiveness of the torque variation mechanism. Material choice significantly affects torque at low relative rotational velocities, resulting in a nonlinear relationship. MRF layer thickness also has a significant impact on torque, although not as predicted by magnetostatic simulations.
SMART MATERIALS AND STRUCTURES
(2021)
Article
Engineering, Mechanical
Manish K. Thakur, Chiranjit Sarkar
Summary: In this study, the lubrication performance of magnetorheological fluid-filled parallel discs of shear mode magnetorheological clutch was investigated. It was found that circular grooves can reduce wear damage on magnetic particles and disc surfaces. Simulation results showed that the presence of grooves on the disc surface can improve heat transfer in the magnetorheological clutch.
PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART J-JOURNAL OF ENGINEERING TRIBOLOGY
(2022)
Article
Materials Science, Multidisciplinary
Takehito Kikuchi, Isao Abe, Tomoya Nagata, Akinori Yamaguchi, Tetsumasa Takano
Summary: This study proposed a new structure of a magnetorheological fluid-based actuator suitable for haptic devices and evaluated its performance through experiments. The results showed that 132DG is a better material for force control compared to other magnetorheological fluids. Two types of twin-driven magnetorheological fluid actuators (link type and belt type) were compared, with the belt-type actuator being more suitable for large range motion and the link-type actuator being better for accurate torque control.
JOURNAL OF INTELLIGENT MATERIAL SYSTEMS AND STRUCTURES
(2021)
Article
Instruments & Instrumentation
M. D. Christie, S. Sun, J. Quenzer-Hohmuth, L. Deng, H. Du, W. H. Li
Summary: This paper presents a magnetorheological-fluid-based differential gear transmission that can variably couple motor power through controlled slippage, providing a simple and reversible governing of output torque and speed. Compared to conventional clutches, this differential gearbox has lower inertia and enables versatile control of output torque through current supplied to the energizing electromagnet.
SMART MATERIALS AND STRUCTURES
(2021)
Article
Computer Science, Cybernetics
Tae-Heon Yang, Hyungki Son, Sangkyu Byeon, Hyunjae Gil, Inwook Hwang, Gwanghyun Jo, Seungmoon Choi, Sang-Youn Kim, Jin Ryong Kim
Summary: RealWalk is a pair of haptic shoes designed for HMD-based VR, aiming to create realistic sensations of ground deformation and texture using Magnetorheological fluid. Compared to vibrotactile-based haptic shoes, RealWalk provides higher ratings in discrimination, realism, and satisfaction across various VR scenes.
IEEE TRANSACTIONS ON HAPTICS
(2021)
Article
Engineering, Multidisciplinary
Sachin B. Lokhande, Satyajit R. Patil
Summary: This study explores a prototype of a magnetorheological clutch for a two-wheeled electric vehicle, which provides quick response, accurate torque transmission control, and an electro-mechanical interface. The research evaluates the torque transmission capability of MRC with and without slits in terms of input parameters analytically and experimentally, confirming the increase in torque transmission and thermal behavior due to the presence of slits. However, the weight and size of the MRC remain a major challenge for its successful integration with a two-wheeled electric vehicle application.
Article
Materials Science, Multidisciplinary
Nicholas Bira, Pallavi Dhagat, Joseph R. Davidson
Summary: In this study, a compact, low-power magnetorheological fluid clutch is developed, which can variably and reversibly alter the shear stress of the fluid by activating an array of electropermanent magnets. By selectively polarizing the magnets, the clutch achieves rapid response times and variable torque transmission, offering a low-power alternative to traditional clutch designs.
FRONTIERS IN MATERIALS
(2022)
Article
Orthopedics
Myla Quiben, Kristin Curry Greenwood, Sharon L. Gorman, Jacque Bradford, Kelly Macauley, Amy Nordon-Craft, Jason Rucker, Nicki Silberman, Brad Stockert
Summary: This study aims to investigate and explore the application of simulation education in physical therapist education, and calls for action to address related issues.
Article
Orthopedics
Katherine Myers, Catherine Bilyeu, Kyle Covington, Amanda Sharp
Summary: Through a consensus-building process, core competencies of clinical teaching in physical therapist education were established, consisting of 24 competencies categorized within 3 domains. This framework provides clarity for the expected knowledge, skills, and attitudes of clinical instructors.
Article
Instruments & Instrumentation
Hyun-U Ko, Inho Yoon, Byungki Kim, Youn-Hee Han, Sung Jea Park, Ho-Jin Hwang, Sang-Youn Kim
Summary: This study proposes a small haptic knob that utilizes magnetorheological fluids to provide kinesthetic torque feedback and vibrotactile feelings. The introduction of a novel rotation shaft structure with blades enables dual operation modes of the MRF (shear and flow) for actuation. Simulation analysis is used to investigate the combination mode in the haptic knob and optimize the blade angle for maximum resistive torque. Experimental studies confirm the optimal angle and demonstrate an increase in kinesthetic torque from 0.002 to 0.2 N m as the current input is increased from 0 to 1.28 A. The haptic knob also achieves strong and stable vibrotactile feedback in the frequency range of 1-50 Hz.
SMART MATERIALS AND STRUCTURES
(2023)
Review
Materials Science, Multidisciplinary
Dezheng Hua, Xinhua Liu, Zengqiang Li, Pawel Fracz, Anna Hnydiuk-Stefan, Zhixiong Li
Summary: This paper reviews the latest MRF-based devices reported from 2018 to 2020, summarizing their rheological characteristics and operational modes, as well as their applications in engineering machinery and medical devices. Additionally, it introduces the structural innovations and application advantages of these devices, along with the future development trends.
FRONTIERS IN MATERIALS
(2021)
Article
Materials Science, Multidisciplinary
Rafhael Milanezi de Andrade, Jordana Simoes Ribeiro Martins, Marcos Pinotti, Antonio Bento Filho, Claysson Bruno Santos Vimieiro
Summary: The study analyzed the energy consumption of an active magnetorheological knee actuator designed for transfemoral prostheses. It found that using the MR brake in the swing phase was more energetically efficient than using the motor-reducer. The AMRK expended 16.3 J during a gait cycle, which was 1.6 times less than the energy expenditure of the CAKP, while the CSAKP required just 6.0 J.
JOURNAL OF INTELLIGENT MATERIAL SYSTEMS AND STRUCTURES
(2021)
Article
Orthopedics
Kim Dunleavy, Anne Mejia-Downs, Hadiya Green Guerrero, Erin Wentzell, Valerie M. Rucker-Bussie, Todd E. Davenport, Dawn M. Magnusson
Summary: The future of health care professional education is shifting towards a focus on the health of the larger society, with the COVID-19 pandemic highlighting the connection between social determinants and population health. This article presents three options for integrating population health content into the Doctor of Physical Therapy curriculum and emphasizes the importance of experiential learning and interdisciplinary interaction in reinforcing population health competencies. Current societal issues, such as health equity and the impact of the pandemic, provide an opportunity to enhance population health education. The intentional integration of population health principles into professional education is crucial for preparing future providers.
Article
Orthopedics
Terry Nordstrom, Gail M. Jensen, Peter Altenburger, Mary Blackinton, Susan Deusinger, Laurita Hack, Rupal M. Patel, Barbara Tschoepe, Lisa VanHoose
Summary: This Perspective challenges physical therapists to reorient their education to address COVID-19 and systemic racism. They advocate for a curriculum focused on social reconstruction, emphasizing the importance of professional formation and creating pathways for underrepresented groups. The article also highlights the need for a paradigm shift in faculty thinking and the importance of addressing social determinants of health and systemic racism.
Article
Materials Science, Multidisciplinary
Takehito Kikuchi, Junichi Noma, Syuichi Akaiwa, Yuya Ueshima
JOURNAL OF INTELLIGENT MATERIAL SYSTEMS AND STRUCTURES
(2016)
Article
Chemistry, Applied
Tsubasa Oguro, Hiroyuki Endo, Takehito Kikuchi, Mika Kawai, Tetsu Mitsumata
REACTIVE & FUNCTIONAL POLYMERS
(2017)
Article
Instruments & Instrumentation
Isao Abe, Takehito Kikuchi, Junichi Noma
SMART MATERIALS AND STRUCTURES
(2017)
Article
Polymer Science
Hiroyuki Endo, Shunsuke Kato, Mayuko Watanebe, Takehito Kikuchi, Mika Kawai, Tetsu Mitsumata
Article
Biochemistry & Molecular Biology
Takehito Kikuchi, Yusuke Kobayashi, Mika Kawai, Tetsu Mitsumata
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2018)
Article
Materials Science, Multidisciplinary
Takehito Kikuchi, Isao Abe, Tomoya Nagata, Akinori Yamaguchi, Tetsumasa Takano
Summary: This study proposed a new structure of a magnetorheological fluid-based actuator suitable for haptic devices and evaluated its performance through experiments. The results showed that 132DG is a better material for force control compared to other magnetorheological fluids. Two types of twin-driven magnetorheological fluid actuators (link type and belt type) were compared, with the belt-type actuator being more suitable for large range motion and the link-type actuator being better for accurate torque control.
JOURNAL OF INTELLIGENT MATERIAL SYSTEMS AND STRUCTURES
(2021)
Article
Engineering, Mechanical
Takehito Kikuchi, Tetsumasa Takano, Akinori Yamaguchi, Asaka Ikeda, Isao Abe
Summary: An actuation system for fine haptic control of leader-follower robots was developed, using a haptic interface with MR fluid actuators and brakes. Evaluation tests showed that force information from haptic forceps helped users perceive grasping sensation, with a decreasing tendency in mental stress for delicate manipulation tasks observed. Statistical analyses indicated no significant differences in questionnaire answers.
Article
Robotics
Takehito Kikuchi, Taiki Oshimoto, Isao Abe, Kenichiro Tanaka, Yasue Asaumi, Naoki Chijiwa
JOURNAL OF ROBOTICS AND MECHATRONICS
(2020)
Article
Engineering, Multidisciplinary
Takehito Kikuchi, Isao Abe
ENGINEERING RESEARCH EXPRESS
(2019)
Article
Materials Science, Multidisciplinary
Yasuhiro Umehara, Hiroyuki Endo, Mayuko Watanabe, Takehito Kikuchi, Mika Kawai, Tetsu Mitsumata
AIMS MATERIALS SCIENCE
(2018)
Proceedings Paper
Biophysics
Isao Abe, Kohei Ishiya, Taiki Oshimoto, Takehito Kikuchi, Sosuke Tanida, Takashi Yasuda
2017 39TH ANNUAL INTERNATIONAL CONFERENCE OF THE IEEE ENGINEERING IN MEDICINE AND BIOLOGY SOCIETY (EMBC)
(2017)
Proceedings Paper
Engineering, Electrical & Electronic
Takehito Kikuchi, Chihiro Sato, Kazuki Yamabe, Isao Abe, Tetsuya Ohno, Shintaro Kugimiya, Akio Inoue
2017 INTERNATIONAL CONFERENCE ON REHABILITATION ROBOTICS (ICORR)
(2017)
Proceedings Paper
Engineering, Electrical & Electronic
Takehito Kikuchi, Kohei Ishiya, Isao Abe, Sosuke Tanida, Takashi Yasuda
2017 INTERNATIONAL CONFERENCE ON REHABILITATION ROBOTICS (ICORR)
(2017)
Article
Chemistry, Multidisciplinary
Tsubasa Oguro, Jinta Nanpo, Takehito Kikuchi, Mika Kawai, Tetsu Mitsumata
Article
Robotics
Takehito Kikuchi, Isao Abe
JOURNAL OF ROBOTICS AND MECHATRONICS
(2016)
Article
Robotics
Aime Charles Alfred Dione, Shoichi Hasegawa
Summary: This study proposes a new method to solve the kinematic hyper redundancy problem in posture control of a robotic arm with redundant degrees of freedom. By controlling strategic points along the arm, the method guides the overall motion of the arm towards the target posture. The method is capable of safely and accurately tracking target postures that are significantly different from the initial posture.
Article
Robotics
Peirang Li, Naoya Ueda, Chi Zhu
Summary: This study focuses on the traditional attendant-propelled power-assist wheelchairs (APAWs) and identifies the discomfort caused by changes in handle velocity when passing through a slope. To address this issue, a velocity compensation method is proposed and validated through simulations and experiments.
Article
Robotics
Juan Padron, Kenta Tatsuda, Kiyoshi Ohishi, Yuki Yokokura, Toshimasa Miyazaki
Summary: This paper proposes a method that takes into account real-time posture-dependent inertial variation to achieve exact dynamic compensation and independent control of each axis for industrial robots. By discretizing the state equations of the posture-variant two-inertia system model, the whole control system can be easily redeisgned at each control cycle to address the issues caused by posture changes.
