Automated real-time structure health monitoring via signature pattern recognition

Fanping P. Sun; Zaffir A. Chaudhry; Craig A. Rogers; M. Majmundar; Chen Liang

doi:10.1117/12.208261

8 May 1995 Automated real-time structure health monitoring via signature pattern recognition

Fanping P. Sun, Zaffir A. Chaudhry, Craig A. Rogers, M. Majmundar, Chen Liang

Proceedings Volume 2443, Smart Structures and Materials 1995: Smart Structures and Integrated Systems; (1995) https://doi.org/10.1117/12.208261
Event: Smart Structures and Materials '95, 1995, San Diego, CA, United States

Abstract

Described in this paper are the details of an automated real-time structure health monitoring system. The system is based on structural signature pattern recognition. It uses an array of piezoceramic patches bonded to the structure as integrated sensor-actuators, an electric impedance analyzer for structural frequency response function acquisition and a PC for control and graphic display. An assembled 3-bay truss structure is employed as a test bed. Two issues, the localization of sensing area and the sensor temperature drift, which are critical for the success of this technique are addressed and a novel approach of providing temperature compensation using probability correlation function is presented. Due to the negligible weight and size of the solid-state sensor array and its ability to sense incipient-type damage, the system can eventually be implemented on many types of structures such as aircraft, spacecraft, large-span dome roof and steel bridges requiring multilocation and real-time health monitoring.

Citation Download Citation

Fanping P. Sun, Zaffir A. Chaudhry, Craig A. Rogers, M. Majmundar, and Chen Liang "Automated real-time structure health monitoring via signature pattern recognition", Proc. SPIE 2443, Smart Structures and Materials 1995: Smart Structures and Integrated Systems, (8 May 1995); https://doi.org/10.1117/12.208261

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