Remote nondestructive evaluation of delaminating tiles by using photorefractive vibration imaging

K. Yamanaka, K. Aizu, S. Sakai, A. Mizukami, H. Cho

Research output: Contribution to journalConference articlepeer-review

Abstract

Collapse of delaminated tiles on the wall of buildings causes serious problems and nondestructive evaluation (NDE) methods are demanded for it. We developed a new technique for the real-time imaging by using the photorefractive effect. Though the vibration amplitude was as small as 1.5nm in the frequency range of 1 to 100 kHz, and the laser power is low (4.2μW for the signal beam and 303μW for the reference beam), the vibration mode was imaged with the signal-to noise (S/N) ratio better than 10 in the short exposure time of 200 ms.

Original languageEnglish
Pages (from-to)969-974
Number of pages6
JournalKey Engineering Materials
Volume261-263
Issue numberII
Publication statusPublished - 2004 Jan 1
EventAdvances in Fracture and Failure Prevention: Proceedings of the Fifth International Conference on Fracture and Strength of Solids (FEOFS2003): Second International Conference on Physics and Chemistry of Fracture and Failure Prevention (2nd ICPCF) - Sendai, Japan
Duration: 2003 Oct 202003 Oct 22

Keywords

  • Holography
  • Nondestructive evaluation
  • Photorefractive effect
  • Piezoelectric transducer
  • Tiles
  • Vibration

ASJC Scopus subject areas

  • Materials Science(all)
  • Mechanics of Materials
  • Mechanical Engineering

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