A probability-based diagnostic imaging approach using an active sensor network based on hybrid pulse-echo and pitch-catch configurations

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Abstract

The accuracy and precision of a diagnostic imaging approach substantially reside on appropriate establishment of the field value of the image, i.e., damage index (DI), which is linked to the probability of damage presence. In this study correlation coefficient between the current and baseline signals was integrated with extracted signal characteristics including time-of-flight and signal intensity, to establish a retrofitted DI, with the assistance of an active sensor network in line with both the pulse-echo and pitch-catch configurations. With the retrofitted DI, an enhanced diagnostic imaging approach was developed, whereby structural damage, if any and regardless of its shape, can visually be highlighted in an easily interpretable map quantitatively indicating the 'health' condition of the structure. Effectiveness of the approach was demonstrated by predicting an L-shape crack in an aluminium plate.
Original languageEnglish
Title of host publicationProceedings of the 5th European Workshop - Structural Health Monitoring 2010
Pages1045-1050
Number of pages6
Publication statusPublished - 1 Dec 2010
Event5th European Workshop on Structural Health Monitoring 2010 - Naples, Italy
Duration: 28 Jun 20104 Jul 2010

Conference

Conference5th European Workshop on Structural Health Monitoring 2010
Country/TerritoryItaly
CityNaples
Period28/06/104/07/10

ASJC Scopus subject areas

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

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