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Structural Health Monitoring

The ultimate goal of Structural Health Monitoring is to predict the remaining life of structures, such as a bridges, railroads, roads, viaducts or buildings.

Although that goal is still an open question, a few intermediate steps of damage identification have been defined 1, where predicting the remaining service life is the last one:

  1. identifying the existence of damage;
  2. identifying damage location;
  3. identifying the extent and type of damage;
  4. predicting the remaining service life of the structure.

These steps are also called levels of damage identification. Current methods can perform level 1 and 2 damage identification, and even level 3 when we include models of the degradation behavior of the structure.

Laser Doppler Vibrometer

Wireless Sensors

We are also doing research to apply the newest wireless sensor technologies to structural health monitoring to civil structures, including:

  • developing damage identification methods to take advantage of the computational capabilities of wireless sensors
  • Here is a poster presenting the research (PDF 552KB, December 2006).

  • starting to monitor buildings on the campus of the University of Tokyo (in construction)

Integrated Accelerometer Systems

(in construction)

  • Train Intelligent Monitoring System (TIMS)
  • Vehicle Intelligent Monitoring System (VIMS)

1. Scott W. Doebling, Charles R. Farrar, and Michael B. Prime. A summary review of vibration-based damage identification methods. The Shock and Vibration Digest, 30(2):91-105, 1998.