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Proceedings Paper

Progress in demonstrator program of Japanese Smart Material and Structure System Project
Author(s): Naoyuki Tajima; Tateo Sakurai; Nobuo Takeda; Teruo Kishi
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Paper Abstract

The Japanese Smart Material and Structure System Project started in 1998 and has been developing several key sensor and actuator elements. This project consists of four research groups that consist of structural health monitoring, smart manufacturing, active/adaptive structures, and actuator materials/devices. In order to integrate the developed sensor and actuator elements into a smart structure system and show the validity of the system, two demonstrator programs have been established. Both demonstrators are CFRP stiffened cylindrical structures with 1.5 m in diameter and 3 m in length. The first demonstrator integrates the following six innovative techniques: (1) impact damage detection using embedded small-diameter optical fiber sensors newly developed in this program, (2) impact damage detection using the integrated acoustic emission (AE) system, (3) whole-field strain mapping using the BOTDR/FBG integrated system, (4) damage suppression using embedded shape memory alloy (SMA) foils, (5) maximum and cyclic strain sensing using smart composite patches, and (6) smart manufacturing using the integrated sensing system. The second one is for demonstrating the suppression of vibration and acoustic noise generated in the composite cylindrical structure. High-performance PZT actuators developed in this program are also installed. The detailed design of the demonstrator was made and the testing program has been planned to minimize the time and the cost for the demonstration. The present status of the demonstrator program is presented, including the success and difficulty in the on-going program.

Paper Details

Date Published: 15 July 2002
PDF: 10 pages
Proc. SPIE 4701, Smart Structures and Materials 2002: Smart Structures and Integrated Systems, (15 July 2002); doi: 10.1117/12.474651
Show Author Affiliations
Naoyuki Tajima, R&D Institute of Metals and Composites for Future Industries (Japan)
Tateo Sakurai, R&D Institute of Metals and Composites for Future Industries (Japan)
Nobuo Takeda, Univ. of Tokyo (Japan)
Teruo Kishi, National Institute for Material Science (Japan)


Published in SPIE Proceedings Vol. 4701:
Smart Structures and Materials 2002: Smart Structures and Integrated Systems
L. Porter Davis, Editor(s)

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