Structural Health Monitoring approach for detecting ice accretion on bridge cable using the Haar Wavelet Transform

Julia Andre, Anne Kiremidjian, Yizheng Liao, Christos T. Georgakis, Ram Rajagopal

Research output: Chapter in Book/Report/Conference proceedingArticle in proceedingsResearchpeer-review

Abstract

Ice accretion on cables of bridge structures poses serious risk to the structure as well as to vehicular traffic when the ice falls onto the road. Detection of ice formation, quantification of the amount of ice accumulated, and prediction of icefalls will increase the safety and serviceability of the structure. In this paper, an ice accretion detection algorithm is presented based on the Continuous Wavelet Transform (CWT). In the proposed algorithm, the acceleration signals obtained from bridge cables are transformed using wavelet method. The damage sensitive features (DSFs) are de fined as a function of the wavelet energy at specific wavelet scales. It is found that as ice accretes on the cables, the mass of cable increases, thus changing the wavelet energies. Hence, the DSFs can be used to track the change of cables mass. To validate the proposed algorithm, we use the data collected from a laboratory experiment conducted at the Technical University of Denmark (DTU). In this experiment, a cable was placed in a wind tunnel as ice volume grew progressively. Several accelerometers were installed at various locations along the testing cable to collect vibration signals.
Original languageEnglish
Title of host publicationSensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems 2016
Number of pages8
Volume9803
PublisherSPIE - International Society for Optical Engineering
Publication date2016
DOIs
Publication statusPublished - 2016
EventSensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems - JW Marriott Las Vegas Resort & Spa, Las Vegas, United States
Duration: 21 Mar 201624 Mar 2016
Conference number: 9803

Conference

ConferenceSensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems
Number9803
LocationJW Marriott Las Vegas Resort & Spa
CountryUnited States
CityLas Vegas
Period21/03/201624/03/2016
SeriesProceedings of S P I E - International Society for Optical Engineering
Volume9803
ISSN0277-786X

Keywords

  • Structural Health Monitoring
  • Ice accretion
  • Bridge monitoring
  • Wavelet Transform
  • Forecast

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