Browsing by Author "Tseng, Po-Ying"

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Characterization of Young's modulus and thermal conductivity of graphene/epoxy nanocomposites
(2019-03-01)
Wang, Tai-Yuan
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Tseng, Po-Ying
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Tsai, Jia-Lin
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交大名義發表
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機械工程學系
Atomistic simulation together with micromechanical analysis was employed to characterize the Young's modulus and thermal conductivity of graphene/epoxy nanocomposites. Nanocomposites containing pristine graphene, carboxyl (COOH)-functionalized graphene, and COOH- and amine (NH2)-functionalized graphene were considered in the simulations. The effect of atomistic interaction between the graphene and the surrounding epoxy was accounted for in the molecular dynamics simulations and then used to derive the effective properties of graphene. Subsequently, the Young's modulus and thermal conductivity of nanocomposites containing randomly oriented graphene were modeled using the Mori-Tanaka micromechanical model. The results indicated that the COOH- and NH2-functionalized graphene nanocomposite had superior mechanical and thermal properties to the other two material systems. Moreover, the model predictions were in favorable agreement with the experimental data.
Manipulating a multi-DOF robot manipulator for tasks in home-like environments
(2012)
Hsieh, Mu-Cheng
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Tseng, Po-Ying
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Jan, Ming-Shiun
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Young, Kuu-young
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電子工程學系及電子研究所
As more robots are expected to enter the families to provide assistance soon, many challenging problems shall emerge, when facing the uncertain and varying environments, rather than the organized environments in factories. To date, robots still demand human\'s assistance when working in home-like environments. To enhance their usefulness, one issue of much interest is how we can effectively operate them for task execution. If not for detailed analysis and program coding, one appealing alternate is to provide a kind of manipulative system for the user to manipulate the robot naturally and efficiently. That motivates us to develop a dextrous manipulation system for multi-DOF robot manipulators based on using the 6-DOF force-reflection joystick. To demonstrate its effectiveness, the developed manipulation system is utilized to govern the robot manipulator for the tasks of water pouring and screw fastening.