Ultrasonic measurement of applied stress in structural members

Efrain A. Mandracchia

doi:10.1117/12.209777

19 May 1995 Ultrasonic measurement of applied stress in structural members

Efrain A. Mandracchia

Proceedings Volume 2456, Nondestructive Evaluation of Aging Bridges and Highways; (1995) https://doi.org/10.1117/12.209777
Event: Nondestructive Evaluation of Aging Infrastructure, 1995, Oakland, CA, United States

Abstract

In order to assess the structural integrity of bridges, an accurate and cost effective measurement technology is required to ensure their safe and reliable operation. Over 60,000 of the nation's steel highway bridges have been classified as structurally deficient. The objective of this paper is to assess the applicability of a new ultrasonic measurement technology as an effective measurement technique and viable tool for the structural engineering community. Laboratory tests comparing the ultrasonic and traditional strain gage measurement technique show a correlation coefficient of 0.993. Preliminary field test data collected on a portside crane compare both measurement technolgies. The resulting conclusion is that the ultrasonic technique is comparable in performance to the traditional strain gage measurment technolgy, and offers a portable, cost effective method for evaluating bridge, crane, and other types of structural members.

Citation Download Citation

Efrain A. Mandracchia "Ultrasonic measurement of applied stress in structural members", Proc. SPIE 2456, Nondestructive Evaluation of Aging Bridges and Highways, (19 May 1995); https://doi.org/10.1117/12.209777

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