DEVELOPMENT OF STRUCTURAL HEALTH MONITORING SYSTEMS FOR SMART COMPOSITE STRUCTURE SYSTEMS

摘要

The present R&D status of our structural health-monitoring group (SHMG) is summarized. Activities of the SHMG are conducted as a university-industry collaboration program at the University of Tokyo along with 10 research organizations. The research themes include: (1) development of high-performance sensor system technology with newly-developed sensors, (2) development of a damage detection and self-diagnosis system for structural integrity based on micro-mechanical damage identification, and (3) development of application technology for model structures. The sensor technology includes: (1) development of small diameter optical fiber sensor, (2) damage suppression in composite laminate systems with embedded shape-memory alloy films, and (3) development of maximum strain memory sensors with electrically conductive composite systems. The sensor output is correlated with the underlying damage evolution in structures such as aircrafts, satellites, high-speed trains and large-scale civil infrastructures.