Hideaki MURAYAMA Professor|Department of Ocean Technology,Policy, and Environment Graduate School,The University of Tokyo

Member

Career Summary

B. S. (Eng.) (1996), Faculty of Engineering, The University of Tokyo (Japan).
M. S. (Eng.) (1998), Department of Naval Architecture and Ocean Engineering, School of Engineering, The University of Tokyo (Japan).
Ph.D. (Eng.) (2001), Department of Environmental and Ocean Engineering, School of Engineering, The University of Tokyo (Japan), Title of thesis is “Structural health monitoring with fiber-optic sensors”, in Japanese.
Research Fellow of Japan Society for the Promotion of Science (JSPS) (January 1999 – March 2001).
Researcher at National Space Development Agency of Japan (NASDA)* (March 2001 – May 2003).
* On October 1, 2003, ISAS, NAL and  NASDA  were merged into one independent administrative institution: the Japan Aerospace Exploration Agency (JAXA).
Lecturer at Department of Environmental and Ocean Engineering, School of Engineering, The University of Tokyo, (May 2003 – October 2006).
Associate Professor at Department of Environmental and Ocean Engineering, School of Engineering, The University of Tokyo, (October 2006 – March 2008).
Associate Professor at Department of Systems Innovation, School of Engineering, The University of Tokyo, (April 2008 – May 2017).
Visiting Researcher at KTH Royal Institute of Technology (April 2015 – April 2016)
Professor at Department of Ocean Technology, Policy and Environment, Graduate School of Frontier Sciences, The University of Tokyo, Japan (since June 2017).

Educational Activities

Strength of Materials, Mechanics of Composite Materials, System Reliability Engineering, Project Based Learning in Vehicle Engineering or Sensing Technologies

Research Activities

A.   Study on Structural Health Monitoring and Management (1995 – )
I am aiming for the realization of a structure which can monitor its own condition and integrity and then call for suitable operation or maintenance works. This kind of structures needs nerves and a brain to identify the condition and make a right decision as if a human-beings do so. To give senses and perception to the structure, I am studying on mainly fiber-optic sensing technology and developing the fiber sensor network system. Also I am developing analysis methodologies to determine the overall deformation and load based strain data obtained from limited locations. The purpose of this study is to improve reliability and safety of space transportation system, aircraft, ship, civil structures and so on.
B.   Development of Distributed Fiber Optic Sensors (2002 – )
I have developed a fiber-optic distributed sensing system with the high spatial resolution. Its resolution is less than 1 mm and it can easily map the strain and temperature profile along the sensing fiber with fiber Bragg gratings (FBG). This sensing system based on optical frequency domain reflectometry (OFDR) can be applied to precise and global strain and temperature measurements in various structures. Now I’m aiming to increase in performance of the sensing system about the measurement speed, the measurement range and the simultaneous measurement technique rather than the spatial resolution, in order to enhance its applicability.
C.   Study on Fiber Optic Sensor Network (FOSN) for Disaster Prevention (2007 – )
I am aiming for the realization of FOSN to eliminate or decrease the risk caused by natural disasters. I established a nonprofit organization with some companies in 2007. It is “Photonic Sensing Consortium” and it has about 20 company members. I have leaded some projects: development of FOSN for disaster prevention information system and SHM of railway structures with a Japanese railway company, development of OFSN for river management supported by Ministry of Land, Infrastructure, Transport and Tourism (MLIT) and development and operation of condition monitoring system for bridges and so on.
D.   Marine Composite Structures (2007 – )
Composite materials have advantages in the marine field thanks to the higher specific strength/stiffness and the corrosion resistance. Composites have been generally used to the hulls of boats. I’m aiming to enhance the performance and environment adaptability of vehicles and structures in ocean by applying composites to them. I developed the technologies for the passive pitch control blades of an ocean current/tidal power generation system in the project between 2007 and 2011. Marine composite propellers have also been developed for merchant vessels in the project with the companies from 2007. In this project I’m aiming to develop technologies to enhance the strength of composites for marine propellers and to design the higher performance propulsion system.
E.   Study on Autonomous Surface Vehicle and Micro Aerial Vehicles (2003 – )
In pedagogical projects in the university I have developed autonomous surface vehicles (ASV) and micro aerial vehicles (MAV) with students. In 2013 and 2014 the professors of KTH Royal Institute of Technology in Stockholm and I organized the projects in which the student of KTH and the University of Tokyo made the concepts and designs of ASV and manufactured the boats to participate in the races, together. In these projects I’m learning and aiming to build a methodology to let engineering students be professional engineers.

Other Activities

Society
Japan Society for Composite Materials
The Japan Society of Naval Architects and Ocean Engineers
The Japan Society of Mechanical Engineers
Japan Society of Maintenology
Japan Society of Civil Engineers
SAMPE Japan

Future Plan

Messages to Students