Localization of a breathing crack using nonlinear subharmonic response signals

F. Semperlotti, K. W. Wang, Edward Smith

Research output: Contribution to journalArticlepeer-review

36 Scopus citations


The experimental validation of a structural health monitoring system based on the peculiar nonlinear dynamic response of cracked structures is proposed in this letter. The higher order harmonic response signal is a technique which allows detecting the location of a breathing crack taking advantage of the nonlinear dynamic response proper of a cracked structure. The experimental results show that information carried by the nonlinear harmonics allow detecting the structural damage without requiring a baseline signal of the healthy structure.

Original languageEnglish (US)
Article number254101
JournalApplied Physics Letters
Issue number25
StatePublished - Dec 1 2009

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy (miscellaneous)


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