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Simultaneous monitoring of crack signals and strain of composites using a stabilized EFPI sensor system

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6 Scopus citations

Abstract

An extrinsic Fabry-Perot interferometric (EFPI) sensor is a good transducer for the detection of ultrasonic fracture signals and for the measurement of structural strain. In this paper, we report on the development of a novel sensor system, used both to measure the strain of structures and to detect fracture signals of composites, simultaneously. The proposed system solved both the inherent ambiguity in the cosine response and the fade-out problem, which are serious obstacles to overcome before the application of the EFPI to fracture signal detection and to structural strain measurement.

Original languageEnglish
Pages (from-to)2146-2151
Number of pages6
JournalKey Engineering Materials
Volume270-273
Issue numberIII
StatePublished - 2004
EventProceedings of the 11th Asian Pacific Conference on Nondestructive Testing - Jeju Island, Korea, Republic of
Duration: 3 Nov 20037 Nov 2003

Keywords

  • Acoustic emission (AE)
  • Composites
  • Extrinsic Fabry-Perot interferometer
  • Fabry-Perot (F-P) tunable filter
  • Stabilization

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