Prof. Sang-Youn Kim
Interaction Laboratory, Advanced Research Technology Center, Korea University of Technology and Education, Cheonan, Republic of Korea
Title: Soft Haptic Actuators and Sensors for Human Robot Interaction
Abstract:
The term ‘haptic’ is a word that is related to kinesthetic or tactile sensation. Kinesthetic and tactile information refers to sensory data obtained through receptors of joints, muscles, ligaments, and etc, and through receptors of skin, respectively. A user recognizes the stiffness of an object through the kinesthetic information and discerns the texture of an object through the tactile information. Therefore, a user can communicate and/or interact with a robot efficiently by adding haptic information to auditory and visual information. Robots and their interfaces are under rapid shift from rigid to flexible and soft modules. Researchers are developing even shape changing interfaces, which can provide better affordance to users. Since such interface and module can have diverse shapes, the currently available rigid actuators/sensors are not very appropriate to provide/sense tactile feedback, and we will need the tactile actuators/sensors that have excellent shape conformity. Soft actuators/sensors are one of the best candidates for that purpose. This talk addresses the best-established technologies for soft haptic actuators and sensors.
Biography:
Sang-Youn Kim received the BS degree from Korea University, Korea, in 1994, and the MS and PhD degrees at the Korea Advanced Institute of Science and Technology (KAIST), in 1996 and 2004, respectively. From 2004 to 2005, he was a researcher in the Human Welfare Robot System Research Center. In 2005, he was a research staff at the Samsung Advanced Institute of Technology. He is a professor of computer science and engineering at Korea University of Technology and Education and also a director of the Advanced Technology Research Center. His current research interests include human-robot interaction, virtual reality, and haptics. He received Best Demo Award at IEEE world haptic conference 2013 and got Best Demo Award at ACM VRST 2022. He also received commendations from the Minister of Knowledge and Economy 2013, the Minister of Education 2018, and the Minister of Science and Technology 2022.
Prof. Khoa V. Nguyen.
Deputy director of Institute of Mechanics, Vietnam Academy of Science and Technology (VAST)
Title: Damage detection of cables in cable-stayed bridges using vibration data measured from climbing robot
Abstract:
Damage detection of cables in cable-stayed bridges is a very important issue since cables are the most important parts carrying critical loads in cable-stayed bridges. The damage types of cables can be crack and local reduction in diameter. This talk addresses a method for damage detection of bridge cables using the vibration signal coming from the sensor installed in the climbing robot. The climbing robot consisting of a body and three wheels connected to the body by three springs. When there is no damage, the dynamic displacement of the robot is smooth and no distortion at the crack position can be inspected. However, when there is a damage, there will be a distortion in the robot displacement at the damage location. The proposed method is promising since it is efficient to detect cracks with depth as small as 1% of the cable diameter and to detect local changes in diameter with amplitude as small as 0.1%.
Biography:
Khoa V. Nguyen received the BS degree and MS degree from the National University, Ha Noi in 1991 and 2000, respectively. He took part in PhD courses at the Technical University of Denmark, Denmark in 1995. He was visiting researcher at the Korea Advanced Institute of Science and Technology (KAIST) in 2000. He received PhD degree at the School of Mechanical Engineering, University of Birmingham, UK in 2007. In 2009, he completed his postdoctoral program at the Department of Aerospace Engineering and Engineering Mechanics, University of Texas at Austin, US as a Fullbright Scholar. He is now a professor of mechanics in the Graduate University of Science and Technology (GUST), VAST. He is working and teaching in the field of mechanics and mathematics in GUST and the University of Engineering and Technology, Vietnam National University. His major interests are: dynamics of structures, signal processing, structural health monitoring, nondestructive damage detection.