Airframe structural damage detection: A non-linear structural surface intensity based technique

Fabio Semperlotti, Stephen C. Conlon, Andrew R. Barnard

Research output: Contribution to journalArticlepeer-review

9 Scopus citations

Abstract

The non-linear structural surface intensity (NSSI) based damage detection technique is extended to airframe applications. The selected test structure is an upper cabin airframe section from a UH-60 Blackhawk helicopter (Sikorsky Aircraft, Stratford, CT). Structural damage is simulated through an impact resonator device, designed to simulate the induced vibration effects typical of non-linear behaving damage. An experimental study is conducted to prove the applicability of NSSI on complex mechanical systems as well as to evaluate the minimum sensor and actuator requirements. The NSSI technique is shown to have high damage detection sensitivity, covering an extended substructure with a single sensing location.

Original languageEnglish (US)
Pages (from-to)EL121-EL127
JournalJournal of the Acoustical Society of America
Volume129
Issue number4
DOIs
StatePublished - Apr 2011

All Science Journal Classification (ASJC) codes

  • Arts and Humanities (miscellaneous)
  • Acoustics and Ultrasonics

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