Distributed sensors for damage detection and localization

Branko Glisic, Merit Enckell, Frank Myrvoll, Benny Bergstrand

Research output: Chapter in Book/Report/Conference proceedingConference contribution

6 Scopus citations

Abstract

Distributed fiber optic sensing technology based on Brillouin scattering effect has been proven as a mean to assess average strain and average temperature distributions in structures. However, detection of damage such as crack is very challenging, since only a short portion of sensor, much shorter than spatial resolution of the system, is exposed to very high concentrated strain. Beside this, the sensing fiber itself suffers from concentrated stresses and may be broken. In order to resolve above mentioned issues, first the detection algorithm was improved in order to make system sensitive to measurand changes occurring over length shorter than spatial resolution, and second a special manner of sensor installation is developed in order to make possible for optical fiber to survive high concentrated stresses. The system is applied on Götaälvbron (Gota Bridge), Gothenburg, Sweden, for the first time at a large scale. Number of reduced and full scale tests was performed in order to assess performance of the system. The system, its implementation method and results of the tests are presented in this paper.

Original languageEnglish (US)
Title of host publicationStructural Health Monitoring of Intelligent Infrastructure - Proceedings of the 4th International Conference on Structural Health Monitoring of Intelligent Infrastructure, SHMII 2009
StatePublished - Dec 1 2009
Event4th International Conference on Structural Health Monitoring of Intelligent Infrastructure, SHMII 2009 - Zurich, Switzerland
Duration: Jul 22 2009Jul 24 2009

Publication series

NameStructural Health Monitoring of Intelligent Infrastructure - Proceedings of the 4th International Conference on Structural Health Monitoring of Intelligent Infrastructure, SHMII 2009

Other

Other4th International Conference on Structural Health Monitoring of Intelligent Infrastructure, SHMII 2009
CountrySwitzerland
CityZurich
Period7/22/097/24/09

All Science Journal Classification (ASJC) codes

  • Artificial Intelligence
  • Computer Networks and Communications
  • Information Systems and Management
  • Civil and Structural Engineering
  • Building and Construction

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