Toshihira Irisawa

Enhancement of surface adhesion between thermoplastic resin and carbon fiber using polymer colloids

ABSTRACT To enhance the interfacial adhesion between carbon fiber and thermoplastic resin, poly(methyl methacrylate) (PMMA) particles were adsorbed on the carbon fiber. It was found that positively charged PMMA particles were readily adsorbed on the carbon fiber, and the interfacial shear strength between the modified carbon fiber and the resin was enhanced. In addition, the interaction between the carbon fiber coated with particles to the PMMA resin would be improved, and the surface adhesion between them was strengthened.

Gray-box modeling and control of torsional fishing-line artificial muscle actuators

This paper focuses on the torsional motion of a torsional type fishing-line artificial muscle actuator, so to speak, Twisted Polymer Fiber (TPF) actuator. TPFs are expected as limited rotation motors or limited angle motors for mechatronic applications. Aiming to construct a gray-box model for TPF actuators, this paper derives the first-order transfer function as the model from the applied electrical power to the generated torque of an actuator. The relation from the temperature to the generated torsional torque is simply assumed as a linear function of which coefficient is the torsional rigidity. In the experiment, the validity of the obtained model is evaluated, and then the blocked torque of the TPF actuator is controlled.