RADAR AND ACOUSTIC EMISSION APPLIED TO STUDY OF BRIDGE DECKS, SUSPENSION CABLES, AND MASONRY TUNNEL

Studies have been conducted that suggest that it is feasible to use acoustic-emission and radar techniques for the nondestructive testing of masonry and of bridge cables. The examination of the condition of a brick railroad tunnel was carried out by using both techniques. Radar was used to determine the conditions of several reinforced concrete roadways and bridge decks. Acoustic emission was used in a novel way involving the application of small stresses to bridge cables, and the resultant emission pattern was correlated with the condition of the cables. The equipment used is discussed in some detail, as are the uses of special techniques for obtaining and analyzing the data. Several means of loading the bridge cables to obtain the acoustic emission were used; the use of an air hammer is the most effective technique found thus far. Several photographic techniques were developed to correlate the mass of data obtained from radar studies of roadways. These photographic techniques and the advantages of each are discussed in some detail. It is concluded that radar and acoustic emission are potentially useful tools for nondestructive testing of masonry and bridge cables. /Author/

Media Info

  • Media Type: Print
  • Features: Figures; Photos; References; Tables;
  • Pagination: pp 27-32
  • Monograph Title: Bridge design, evaluation, and repair
  • Serial:

Subject/Index Terms

Filing Info

  • Accession Number: 00195909
  • Record Type: Publication
  • ISBN: 0309028191
  • Files: TRIS, TRB
  • Created Date: Aug 15 1979 12:00AM