The youngest of the technologies applied to nondestructive testing (NDT) involves light. It includes holography and shearography, both of which see upgrades and breakthroughs almost daily. Both use lasers and produce fringe patterns. Two newly developed systems--one from each area--are described that promise exceptionally effective NDT results. The first is an electronic holographic system that uses video recording and computer-controlled imaging to reduce problems traditionally associated with conventional photographic holography. It is applied primarily to vibration analysis. The second is an electronic shearography system that also uses video technology. It offers in-lab or in-field testing. Both are well-suited to detecting cracks, delaminations, nonbonds, and similar flaws, and are highly effective in testing composite materials.

  • Supplemental Notes:
    • Journal article
  • Publication Date: 1991-3

Media Info

  • Pagination: 6 p.
  • Serial:
    • Compressed Air
    • Volume: 96
    • Issue Number: No.2
    • Publisher: Compressed Air Magazine Company

Subject/Index Terms

Filing Info

  • Accession Number: 00661942
  • Record Type: Publication
  • Source Agency: Maritime Technical Information Facility
  • Files: TRIS
  • Created Date: Jul 21 1994 12:00AM