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Characteristics of acoustic emission signals in integrally stiffened aluminium plates

  • Wugang Liu*
  • , Xiaokun Zang
  • , Haibei Gu
  • , Baojun Pang
  • , Zengyao Han
  • *Corresponding author for this work
  • Beijing Institute of Structure and Environment Engineering
  • China Aerospace Science and Technology Corporation

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

Two dimensional numerical models were established with the SPH (smoothed particle hydrodynamics) technique of AUTODYN hydro-codes in this paper. The acoustic emission (AE) signals produced by hypervelocity-projectile impact in integrally stiffened aluminium plates at normal were obtained under the condition of different stiffener widths. The influences of integrally stiffeners on AE signals and on impact localization were investigated. The analytical results show that the stiffener width has more effect on the first amplitude of acoustic emission signals from the stiffeners than that from the other parts. Therefore, the acoustic emission sensors should be attached away from the stiffeners in order to reduce the effect on the precision of impact localization.

Original languageEnglish
Title of host publication62nd International Astronautical Congress 2011, IAC 2011
Pages2072-2076
Number of pages5
StatePublished - 2011
Event62nd International Astronautical Congress 2011, IAC 2011 - Cape Town, South Africa
Duration: 3 Oct 20117 Oct 2011

Publication series

Name62nd International Astronautical Congress 2011, IAC 2011
Volume3

Conference

Conference62nd International Astronautical Congress 2011, IAC 2011
Country/TerritorySouth Africa
CityCape Town
Period3/10/117/10/11

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