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Proceedings Paper

Overview of demonstrator program of Japanese Smart Materials and Structure System project
Author(s): Naoyuki Tajima; Tateo Sakurai; Mikio Sasajima; Nobuo Takeda; Teruo Kishi
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Paper Abstract

The Japanese Smart Material and Structure System Project started in 1998 as five years' program that funded by METI (Ministry of Economy, Trade and Industry) and supported by NEDO (New Energy and Industrial Technology Development Organization). Total budget of five years was finally about 3.8 billion Japanese yen. This project has been conducted as the Academic Institutions Centered Program, namely, one of collaborated research and development among seven universities (include one foreign university), seventeen Industries (include two foreign companies), and three national laboratories. At first, this project consisted of four research groups that were structural health monitoring, smart manufacturing, active/adaptive structures, and actuator material/devices. Two years later, we decided that two demonstrator programs should be added in order to integrate the developed sensor and actuator element into the smart structure system and verify the research and development results of above four research groups. The application target of these demonstrators was focused to the airplane, and two demonstrators that these shapes simulate to the fuselage of small commercial airplane (for example, Boeing B737) had been established. Both demonstrators are cylindrical structures with 1.5 m in diameter and 3 m in length that the first demonstrator has CFRP skin-stringer and the second one has CFRP skin. The first demonstrator integrates the following six innovative techniques: (1) impact monitoring using embedded small diameter optical fiber sensors newly developed in this program, (2) impact monitoring using the integrated acoustic emission (AE) systems, (3) whole-field strain mapping using the BOTDR/FBG integrated system, (4) damage suppression using embedded shape memory alloy (SMA) films, (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. In this program, High-performance PZT actuators/sensors developed in this program are also installed. The whole tests and evaluations have now been finished. This paper presents the outline of demonstrator programs, followed by six presentations that show the detail verification results of industrial demonstration themes.

Paper Details

Date Published: 14 August 2003
PDF: 10 pages
Proc. SPIE 5054, Smart Structures and Materials 2003: Industrial and Commercial Applications of Smart Structures Technologies, (14 August 2003); doi: 10.1117/12.483721
Show Author Affiliations
Naoyuki Tajima, R&D Research Institute of Metals and Composites for Future Industries (Japan)
Tateo Sakurai, R&D Research Institute of Metals and Composites for Future Industries (Japan)
Mikio Sasajima, R&D Research Institute of Metals and Composites for Future Industries (Japan)
Nobuo Takeda, Univ. of Tokyo (Japan)
Teruo Kishi, National Institute for Materials Science (Japan)


Published in SPIE Proceedings Vol. 5054:
Smart Structures and Materials 2003: Industrial and Commercial Applications of Smart Structures Technologies
Eric H. Anderson, Editor(s)

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