Evaluation of structural damage using correlative sensor array (CSA)

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Optimal allocation of actuators and sensors in a sensor array or network is a pivotal issue towards development of effective damage identification techniques. This is particularly accentuated for those methods based on elastic waves, in which damage-induced wave components can be masked considerably by multiple wave modes and boundary reflection as a result of inappropriate sensor allocation. An active sensor array comprised of a number of miniaturised piezoelectric wafers aligned strategically was developed, named correlative sensor array (CSA) in this study for its mechanism of using signal correlation processing. A CSA is able to facilitate awareness of structural damage and subsequently locate it by exploring the time difference of wave signals captured by individual array members, with the assistance of an integrated signal processing algorithm. The effectiveness of CSA was numerically and experimentally validated by locating a through-thickness hole in an aluminium plate.
Original languageEnglish
Title of host publicationProceedings of the 5th European Workshop - Structural Health Monitoring 2010
Number of pages6
Publication statusPublished - 1 Dec 2010
Event5th European Workshop on Structural Health Monitoring 2010 - Naples, Italy
Duration: 28 Jun 20104 Jul 2010


Conference5th European Workshop on Structural Health Monitoring 2010

ASJC Scopus subject areas

  • Civil and Structural Engineering
  • Safety, Risk, Reliability and Quality

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