AE monitoring of civil structures

Collaborators

• • Prof. Salvatore Salamone, Univ of Texas Austin

  • Prof. Piervincenzo Rizzo, Univ of Pittsburgh

  • Prof. Jose' Restrepo, UCSD

Funding:

• • California Department of Transportation

  • National Science Foundation

Synopsis:

We have performed AE monitoring of various test of civil structural components, including: cables for stay-cable bridges, segmental PT concrete bridge sections, and FRP retrofits of concrete structures. In all of these instances, AE techniques were deployed to detect onset of damage and monitor damage progression through special feature extraction and AE source location algorithms.  We have  further investigated the use a statistical discrimination metrics which use multiple ultrasonic features collected from the sensor array to detect a Loss of Capacity of bridges. We have also explored ways to combine "active" ultrasonic monitoring with "passive" AE monitoring in the case of post-tensioned concrete bridges.

Selected Publications:

Salamone, S., Veletzsos, M., Lanza di Scalea, F., and Restrepo, J., “Detection of Initial Yield and Onset of Failure in Bonded Post-tensioned Concrete Beams,” ASCE Journal of Bridge Engineering, Special Issue on NDE/NDT for Bridge Inspection and Evaluation, 17(6), pp. 966-974, 2012. 

Salamone, S., Bartoli, I., Phillips, R., Nucera, C., and Lanza di Scalea, F., “Health Monitoring of Prestressing Tendons in Post-Tensioned Concrete Bridges,” Journal of the Transportation Research Board, Transportation Research Record no. 2220, pp. 21-27, 2011.

Salamone, S., Bartoli, I., Phillips, R., Nucera, C., Lanza di Scalea, F., Sikorsky, C. and Tamutus, T., “Health Monitoring of Prestressing Tendons in Post-tensioned Concrete Structures,” CD-ROM Proceedings of the ASNT Conference on NDE/NDT for Highways and Bridges: Structural Materials Technology, New York, NY, pp. 401-408, August 16-20, 2010. 

Bartoli, I., Salamone, S., Phillips, R., Nucera, C., and Lanza di Scalea, F., “Health Monitoring to Detect Failure of Prestressing (PS) Cables in Segmental Box-girder Bridges,” Technical Report No. CA-090938 to the California Department of Transportation, University of California, San Diego, 2009 (131 pages).

Matta, F., Rizzo, P., Karbhari, V. and Lanza di Scalea, F., “Acoustic Emission Damage Assessment of Steel/CFRP Adhesive Bonds for Rehabilitation,” ASCE Journal of Composites for Construction, 10(3), pp. 265-274, 2006. 

Rizzo, P. and Lanza di Scalea, F., “Load Measurement and Health Monitoring in Cable Stays via Guided Wave Magnetostrictive Ultrasonics,” Materials Evaluation, 62(10), pp. 1057-1065, 2004. 

Rizzo, P. and Lanza di Scalea, F., “Acoustic Emission Monitoring of CFRP Bridge Stay Cables in Large-scale Testing,” Experimental Mechanics, 41(3), pp. 282-290, 2001.