Identification of steady-state uniform temperature distributions to facilitate a temperature driven method of Structural Health Monitoring

J. Reilly, H. Abdel-Jaber, M. Yarnold, B. Glisic

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

9 Scopus citations


Structural Health Monitoring seeks to characterize the performance of a structure from combinations of recorded sensor data and analytic techniques. Temperature is normally considered noise in this analysis, obstructing the goal measuring the elastic response of the structure. While these elastic loads do help characterize a portion of structural behavior, the thermal loads on a structure can induce comparable strains to these elastic loads. Characterizing a relationship between the temperature of the structure and the resultant strain and displacement can provide a deep understanding of the structural condition. In order to begin characterizing this 3-dimensional relationship, time periods with relatively steadystate, uniform temperature distributions need to be identified from the measured data. These periods of uniform temperature distribution in the structure show a thermal response as free as possible from thermal gradients across the structure. These steady-state periods help create a signature of the structure when analyzed with the relevant strain and displacement measurements of the structure. An algorithm for finding these uniform distributions was created to identify these desirable time periods with data of interest. Finding time periods with a completely uniform temperature distribution can be unreasonable, so a suitable temperature interval was chosen to produce a set of data with a reasonable approximation to a uniform distribution, while still providing a large enough set of data to produce meaningful results. These time intervals provide the necessary temperature, strain, and displacement measurements to characterize a signature for the structure, providing a more in-depth analysis in SHM.

Original languageEnglish (US)
Title of host publicationHealth Monitoring of Structural and Biological Systems 2016
EditorsTribikram Kundu
ISBN (Electronic)9781510600461
StatePublished - 2016
EventHealth Monitoring of Structural and Biological Systems 2016 - Las Vegas, United States
Duration: Mar 21 2016Mar 24 2016

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
ISSN (Print)0277-786X
ISSN (Electronic)1996-756X


OtherHealth Monitoring of Structural and Biological Systems 2016
Country/TerritoryUnited States
CityLas Vegas

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering


  • Fiber Optics
  • Sensor Validation
  • Structural Health Monitoring
  • Thermal Effects


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