Guided ultrasonic waves for the health monitoring of existing sign support structures

Xuan Zhu; Piervincenzo Rizzo

doi:10.1117/12.879268

31 March 2011 Guided ultrasonic waves for the health monitoring of existing sign support structures

Xuan Zhu, Piervincenzo Rizzo

Proceedings Volume 7984, Health Monitoring of Structural and Biological Systems 2011; 79840E (2011) https://doi.org/10.1117/12.879268
Event: SPIE Smart Structures and Materials + Nondestructive Evaluation and Health Monitoring, 2011, San Diego, California, United States

Abstract

This paper describes a method based on Guided Ultrasonic Waves for the structural health monitoring of sign support structures. The general framework presented in this paper is applied to ultrasonic data collected from an overhead sign structure removed from service, and tested at the University of Pittsburgh under varying environmental conditions. The probing hardware consisted of a National Instruments-PXI platform that controlled the generation and detection of the ultrasonic signals by means of piezoelectric transducers. The effectiveness of the proposed approach to detect damage under large temperature variations and dry/wet/snowy conditions is demonstrated. Finally, the same hardware / algorithm system was applied for the health monitoring of two structures deployed in the Pittsburgh (Pennsylvania) area.

Citation Download Citation

Xuan Zhu and Piervincenzo Rizzo "Guided ultrasonic waves for the health monitoring of existing sign support structures", Proc. SPIE 7984, Health Monitoring of Structural and Biological Systems 2011, 79840E (31 March 2011); https://doi.org/10.1117/12.879268

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