Abstract

The work presented in this paper provides an insight into the current challenges to detect incipient damage in complex metallic structural components. The goal of this research is to improve the confidence level in diagnosis and damage localization technologies by developing a robust structural health management (SHM) framework. Improved methodologies are developed for reference-free localization of fatigue induced cracks in complex metallic structures. The methodologies for damage interrogation involve damage feature extraction using advanced signal processing tools and a probabilistic approach for damage detection and localization. Specifically, piezoelectric transducers are used in pitch-catch mode to interrogate the structure with guided Lamb waves. A novel time-frequency (TF) based signal processing technique based on the matching pursuit decomposition (MPD) algorithm is developed to extract time-of-flight damage features from dispersive guided wave sensor signals, followed by a Bayesian probabilistic approach used to optimally fuse multi-sensor information and localize the crack tip. The MPD algorithm decomposes a signal using localized TF atoms and can provide a highly concentrated TF representation. The Bayesian probabilistic framework enables the effective quantification and management of uncertainty. Experiments are conducted to validate the proposed detection and localization methods. Results presented will illustrate the usefulness of the developed approaches in detection and localization of damage in aluminum lug joints.

Original languageEnglish (US)
Title of host publicationASME 2012 Conference on Smart Materials, Adaptive Structures and Intelligent Systems, SMASIS 2012
Pages907-916
Number of pages10
Volume1
DOIs
StatePublished - 2012
EventASME 2012 Conference on Smart Materials, Adaptive Structures and Intelligent Systems, SMASIS 2012 - Stone Mountain, GA, United States
Duration: Sep 19 2012Sep 21 2012

Other

OtherASME 2012 Conference on Smart Materials, Adaptive Structures and Intelligent Systems, SMASIS 2012
CountryUnited States
CityStone Mountain, GA
Period9/19/129/21/12

Fingerprint

Crack detection
Guided electromagnetic wave propagation
Signal processing
Decomposition
Aluminum
Piezoelectric transducers
Damage detection
Sensors
Electric fuses
Crack tips
Surface waves
Feature extraction
Health
Fatigue of materials
Cracks
Atoms
Experiments
Fatigue cracks
Uncertainty

ASJC Scopus subject areas

  • Artificial Intelligence
  • Civil and Structural Engineering
  • Mechanics of Materials

Cite this

Hensberry, K., Kovvali, N., Liu, K. C., Chattopadhyay, A., & Papandreou-Suppappola, A. (2012). Guided wave based fatigue crack detection and localization in aluminum aerospace structures. In ASME 2012 Conference on Smart Materials, Adaptive Structures and Intelligent Systems, SMASIS 2012 (Vol. 1, pp. 907-916) https://doi.org/10.1115/SMASIS2012-8241

Guided wave based fatigue crack detection and localization in aluminum aerospace structures. / Hensberry, Kevin; Kovvali, Narayan; Liu, Kuang C.; Chattopadhyay, Aditi; Papandreou-Suppappola, Antonia.

ASME 2012 Conference on Smart Materials, Adaptive Structures and Intelligent Systems, SMASIS 2012. Vol. 1 2012. p. 907-916.

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

Hensberry, K, Kovvali, N, Liu, KC, Chattopadhyay, A & Papandreou-Suppappola, A 2012, Guided wave based fatigue crack detection and localization in aluminum aerospace structures. in ASME 2012 Conference on Smart Materials, Adaptive Structures and Intelligent Systems, SMASIS 2012. vol. 1, pp. 907-916, ASME 2012 Conference on Smart Materials, Adaptive Structures and Intelligent Systems, SMASIS 2012, Stone Mountain, GA, United States, 9/19/12. https://doi.org/10.1115/SMASIS2012-8241
Hensberry K, Kovvali N, Liu KC, Chattopadhyay A, Papandreou-Suppappola A. Guided wave based fatigue crack detection and localization in aluminum aerospace structures. In ASME 2012 Conference on Smart Materials, Adaptive Structures and Intelligent Systems, SMASIS 2012. Vol. 1. 2012. p. 907-916 https://doi.org/10.1115/SMASIS2012-8241
Hensberry, Kevin ; Kovvali, Narayan ; Liu, Kuang C. ; Chattopadhyay, Aditi ; Papandreou-Suppappola, Antonia. / Guided wave based fatigue crack detection and localization in aluminum aerospace structures. ASME 2012 Conference on Smart Materials, Adaptive Structures and Intelligent Systems, SMASIS 2012. Vol. 1 2012. pp. 907-916
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