ULTRASONIC MEASUREMENT OF APPLIED STRESS IN STEEL HIGHWAY BRIDGES

Many of the nation's steel highway bridges have been classified as structurally deficient. To ensure their safe and reliable operation an accurate and cost effective measurement technology is required. This paper examines the applicability of an alternative ultrasonic measurement technique. Laboratory testing on mild steel structural members verifies linearity of the acoustic measurement technique relative to surface strain as measured by a strain gauge(r2 = 0.9984). Field tests conducted on three highway bridges support the results obtained during laboratory testing. Good correlation was achieved between surface stress and acoustic measurements for the three bridges examined in this study. Furthermore, measurement speed and resolution proved to be adequate for monitoring bridge loads on rough, pitted, and painted surfaces. The ultrasonic technique examined in this study is comparable in performance to the traditional strain gauge measurement technology, and offers a portable, cost effective method for monitoring bridge loads and other types of structural loading.

  • Corporate Authors:

    Technomic Publishing Company, Incorporated

    851 New Holland Avenue, Box 3535
    Lancaster, PA  United States  17604
  • Authors:
    • Mandracchia, E A
  • Conference:
  • Publication Date: 1996

Language

  • English

Media Info

  • Features: Figures; References;
  • Pagination: p. 179-184

Subject/Index Terms

Filing Info

  • Accession Number: 00725874
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Sep 13 1996 12:00AM