Crack Detection by Optical Voice Recorder Based on Digital Holography

Ustabas Kaya G., Sarac Z.

PHOTONIC SENSORS, vol.9, no.4, pp.327-336, 2019 (Peer-Reviewed Journal) identifier identifier

  • Publication Type: Article / Article
  • Volume: 9 Issue: 4
  • Publication Date: 2019
  • Doi Number: 10.1007/s13320-019-0541-1
  • Journal Name: PHOTONIC SENSORS
  • Journal Indexes: Science Citation Index Expanded, Scopus
  • Page Numbers: pp.327-336
  • Keywords: Crack detection, sound wave, digital holography, material surface, DEFORMATION MEASUREMENT, COMPOSITE STRUCTURES, IDENTIFICATION, SURFACE, DEPTH, SHAPE


The detection of crack on materials is an important issue in industry. On the contrary to conventional methods, such as manual inspection, sensor detection, and image processing techniques, a new simple method to detect the crack is proposed with optical voice recorder based on digital holography in this paper. Holograms obtained with sound waves passing through the materials are recorded by using the digital holography technique. Temporal behavior of the sound wave passing through the material, which is obtained from these holograms, gives image of crack. In this article, cracks in various materials are determined by the proposed new method, and crack images obtained with this new system are presented.