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 2012
StatePublished - 2012
Event53rd AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics and Materials Conference 2012 - Honolulu, HI, United States
Duration: Apr 23 2012Apr 26 2012

Other

Other53rd AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics and Materials Conference 2012
CountryUnited States
CityHonolulu, HI
Period4/23/124/26/12

Fingerprint

lugs
Lamb waves
Damage detection
Surface waves
Wave propagation
wave propagation
damage
Aluminum
Cracks
cracks
Numerical analysis
aluminum
Actuators
wave reflection
Decomposition
Sensors
numerical analysis
simulation
actuators
decomposition

ASJC Scopus subject areas

  • Aerospace Engineering
  • Mechanical Engineering
  • Materials Science(all)
  • Surfaces and Interfaces

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 2012

Modeling lamb wave propagation for damage detection in a complex metallic aerospace structural component. / Borkowski, Luke; Yekani Fard, Masoud; Chattopadhyay, Aditi.

53rd AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics and Materials Conference 2012. 2012.

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

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 2012. 53rd AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics and Materials Conference 2012, Honolulu, HI, United States, 4/23/12.
Borkowski L, Yekani Fard M, Chattopadhyay A. 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 2012. 2012
Borkowski, Luke ; Yekani Fard, Masoud ; Chattopadhyay, Aditi. / Modeling lamb wave propagation for damage detection in a complex metallic aerospace structural component. 53rd AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics and Materials Conference 2012. 2012.
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