NEW SYSTEM FOR INSPECTING STEEL BRIDGES FOR FATIGUE CRACKS

RECENTLY ONE SOLUTION TO NONDESTRUCTIVE DETECTION AND CHARACTERIZATION OF FATIGUE CRACKS IN STEEL BRIDGE STRUCTURES WAS DEVELOPED BY A JOINT INDUSTRY-GOVERNMENT TEAM USING TECHNOLOGY TRANSFER. THE INSPECTION SYSTEM CONSISTS OF TWO INDEPENDENT, COMPLEMENTARY, LIGHTWEIGHT, BATTERY-POWERED ELECTRONIC INSTRUMENTS: AN ACOUSTIC CRACK DETECTOR (ACD) FOR RAPID SURVEY, WHICH USES ULTRASONIC PRINCIPLES, AUTOMATIC SIGNAL ANALYSIS, AND A SIMPLE DIGITAL DATA DISPLAY; AND A MAGNETIC CRACK DEFINER (MCD), WHICH USES MAGNETIC PRINCIPLES AND A SIMPLE ON-OFF LIGHT DATA DISPLAY FOR DEFINING THE PRECISE CRACK LOCATION AND LENGTH. A BRIEF REVIEW OF THE PROGRAM, INCLUDING INSPECTION TECHNIQUES, ASSESSMENT AND SELECTION, RESULTS OBTAINED WITH BREADBOARD MODELS DURING LABORATORY AND PRELIMINARY FIELD EVALUATIONS AND LABORATORY AND FIELD EVALUATIONS OF THE PROTOTYPE INSTRUMENTATION SYSTEM, IS PRESENTED IN THIS ARTICLE. /AUTHOR/

  • Availability:
  • Authors:
    • Leone, A
    • McGogney, C H
    • Barton, J R
  • Publication Date: 1974-3

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  • Accession Number: 00210099
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Jul 31 1974 12:00AM