Professor Fumio Narita

Graduate School of Engineering, Tohoku University, JAPAN

时间： 2月25日（周一）下午3:00-4:30

地点： 工学院 力学楼434会议室

主持人：李法新　研究员

Abstract:

Piezoelectric and magnetostrictive materials are recognized for their potential utility in a wide variety of sensor and actuator applications. These functional composite materials also play a significant role as electronic components in energy harvesting [1]. Here recent observations on the mechanical behavior of functional composite materials are described through experimental and finite element characterizations. Two topics are itemized below.

1.         Piezomechanics and Piezocomposite Materials: I will describe the nonlinear electromechanical response of piezoelectric materials and structures, and discuss the effects of localized polarization switching, domain wall motion, polarization and depolarization etc. on the fracture and deformation under electric fields at various temperatures. I will then present the results of the fabrication and characterization of the lead-free piezoelectric composite materials for sensor applications.

2.       Magnetostrictive Composites and Structures: I will focus on the fabrication and characterization of magnetostrictive fiber/epoxy composites for sensor and energy harvester applications, and then the results of the energy harvesting characteristics of magnetostrictive composite laminates will be provided.

[1] F. Narita and M. Fox (2018) Adv. Eng. Mater. 20, 1700743

Brief Biography:

Prof. Fumio Narita received his Doctor of Engineering from Tohoku University (Japan) in 1998. He has served as a professor in the Department of Materials Processing at Tohoku University since 2017. Narita’s current research interests involve designing and developing piezoelectric and magnetostrictive materials for energy harvesting for the Internet of Things (IoT), as well as developing wearable devices and smart sensors. He is making extensive use of state-of-the-art electromagnetic mechanical characterization techniques in combination with computational multiscale modelling to gain insights into fundamental structure-property relationships of complex multifunctional composite materials. He is also developing biodegradable composites using natural materials such as cellulose nanofibers (CNFs).

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联系人：李法新010-62757454