Modeling lamb wave propagation for damage detection in a complex metallic aerospace structural component

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

Abstract

This paper presents a three dimensional wave propagation model of an aluminum lug joint specimen with piezoelectric sensors and actuators. The goal is to quantify Lamb wave reflections and mode conversions caused by complex material boundaries and damage. The numerical analysis comprises a combination of the local interaction simulation approach (LISA) and the sharp interface model (SIM). In this paper, three cases studies are presented. The simulation is conducted on three aluminum lug joints: A healthy (i.e. undamaged) lug joint, a lug joint with a single 10 mm crack located at a structural hot spot, and a lug joint with a single 20 mm crack located at a structural hot spot. The matching pursuit decomposition (MPD) algorithm is used to decompose each Lamb wave mode in the time-frequency domain. Numerical results are presented, which are also validated with experimental results. The results demonstrate that the model is capable of detecting the presence of damage in geometrically complex metallic aerospace components through mode conversion analysis.

Original languageEnglish (US)
Title of host publication53rd AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics and Materials Conference
StatePublished - Dec 1 2012
Event53rd AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics and Materials Conference - Honolulu, HI, United States
Duration: Apr 23 2012Apr 26 2012

Publication series

NameCollection of Technical Papers - AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics and Materials Conference
ISSN (Print)0273-4508

Other

Other53rd AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics and Materials Conference
CountryUnited States
CityHonolulu, HI
Period4/23/124/26/12

ASJC Scopus subject areas

  • Architecture
  • Materials Science(all)
  • Aerospace Engineering
  • Mechanics of Materials
  • Mechanical Engineering

Fingerprint Dive into the research topics of 'Modeling lamb wave propagation for damage detection in a complex metallic aerospace structural component'. Together they form a unique fingerprint.

  • Cite this

    Borkowski, L., Yekani Fard, M., & Chattopadhyay, A. (2012). Modeling lamb wave propagation for damage detection in a complex metallic aerospace structural component. In 53rd AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics and Materials Conference [AIAA 2012-1785] (Collection of Technical Papers - AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics and Materials Conference).