Use of nonlinear vibration frequencies and electrical conductivity measurements in the separation of internal and boundary damage in structures

Eric A. Butcher, Igor Sevostianov, Ma'en S. Sari, Mohammad A. Al-Shudeifat

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

3 Scopus citations

Abstract

The paper addresses one of the key problems in structural health monitoring -how to separate defects, both microscopic and macroscopic, accumulated in structural members from damage in the joints and boundaries. It is suggested to use a simultaneous set of measurements - nonlinear vibration frequencies and electrical conductivities - to distinguish between three distinct types of defects. Nonlinearities occur as a result of breathing internal cracks and slapping in damaged joints. The use of proper orthogonal decomposition and a local equivalent linear stiffness method allows for model updating to account for the damage. The theory is presented for full three-dimensional elastic solids and illustrated via the problem of a beam damaged both internally as well as at the boundaries.

Original languageEnglish (US)
Title of host publication2008 Proceedings of the ASME International Mechanical Engineering Congress and Exposition, IMECE 2008
Pages589-598
Number of pages10
DOIs
StatePublished - Sep 14 2009
Externally publishedYes
Event2008 ASME International Mechanical Engineering Congress and Exposition, IMECE 2008 - Boston, MA, United States
Duration: Oct 31 2008Nov 6 2008

Publication series

NameASME International Mechanical Engineering Congress and Exposition, Proceedings
Volume11

Other

Other2008 ASME International Mechanical Engineering Congress and Exposition, IMECE 2008
CountryUnited States
CityBoston, MA
Period10/31/0811/6/08

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ASJC Scopus subject areas

  • Mechanical Engineering

Cite this

Butcher, E. A., Sevostianov, I., Sari, M. S., & Al-Shudeifat, M. A. (2009). Use of nonlinear vibration frequencies and electrical conductivity measurements in the separation of internal and boundary damage in structures. In 2008 Proceedings of the ASME International Mechanical Engineering Congress and Exposition, IMECE 2008 (pp. 589-598). (ASME International Mechanical Engineering Congress and Exposition, Proceedings; Vol. 11). https://doi.org/10.1115/IMECE2008-66555