The Author describes a method for precise measurement of deflections in structures by photo-electronic means. Light-emitting diodes are fitted rigidly to the members being examined, and a camera placed in front of the diodes records 2-dimensional movement of the emitted light. The camera is fitted with special lenses, a photo sensitive resistance pad and a signal amplifying unit. The signal is then through necessary transducers to an analog demultiplexer from which an exact plot of the dynamic deformation can be obtained. Various areas of engineering application are described, but in ship applications this method can be used to measure flexural distortions of the hull under static and dynamic loading.

  • Corporate Authors:

    Swedish Society of Engineers

    Box 40058
    S-10342 Stockholm 40,   Sweden 
  • Authors:
    • Lindholm, L E
  • Publication Date: 1976


  • Swedish

Media Info

Subject/Index Terms

Filing Info

  • Accession Number: 00165393
  • Record Type: Publication
  • Source Agency: British Ship Research Association
  • Files: TRIS
  • Created Date: Nov 23 1977 12:00AM