HOLOGRAPHIC DETECTION OF CRACKS IN CONCRETE

NON-DESTRUCTIVE TESTING OF CONCRETE, THOUGH DESIRABLE, PRESENTS PROBLEMS BECAUSE OF CONCRETE'S COARSE HETEROGENEOUS STRUCTURE. THE AUTHOR DESCRIBES THE APPLICATION OF HOLOGRAPHY TO THIS PROBLEM AND DISCUSSES THE RESULTS SO FAR ACHIEVED. CONSIDERABLE EFFORT IS BEING EXPENDED ON THE DEVELOPMENT OF PULSE LASERS WHICH WILL FREEZE MOVEMENT IN THE STRUCTURES, AND ALSO ON ELECTRONIC RECORDING OF THE HOLOGRAM INFORMATION. THE EXISTING TECHNIQUES CAN BE USED FOR A LARGE VARIETY OF INVESTIGATIONS, AND SOME WORK HAS BEEN CARRIED OUT AN ARTIFICIALLY PRODUCED CRACKS IN HIGH STRENGTH STEELS. THE HOLOGRAPHIC RESULTS WERE COMPARED WITH PENETRATING DYES, X-RAY RADIOGRAPHY, AND EDDY CURRENT TESTING AND FOUND TO BE JUST AS RELIABLE, ALTHOUGH UNTEMPERED MARTENSITE COULD PRODUCE ANOMALOUS FRINGE PATTERNS. /DOT/

  • Corporate Authors:

    Non-destructive Testing /UK

    ,    
  • Authors:
    • LUXMOORE, A
  • Publication Date: 1973-10

Media Info

  • Pagination: p. 258-63
  • Serial:
    • Volume: 6
    • Issue Number: 5

Subject/Index Terms

Filing Info

  • Accession Number: 00203049
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Apr 20 1974 12:00AM