Ultrasonic sensing and time-frequency analysis for detecting plastic deformation in an aluminum plate

Lindsey Channels, Debejyo Chakraborty, Donna Simon, Narayan Kovvali, James Spicer, Antonia Papandreou-Suppappola, Douglas Cochran, Pedro Peralta, Aditi Chattopadhyay

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

7 Citations (Scopus)

Abstract

We investigate the use of low frequency (10-70 MHz) laser ultrasound for the detection of fatigue damage. While high frequency ultrasonics have been utilized in earlier work, unlike contacting transducers, laser-based techniques allow for simultaneous interrogation of the longitudinal and shear moduli of the fatigued material. The differential attenuation changes with the degree of damage, indicating the presence of plasticity. In this paper, we describe a structural damage identification approach based on ultrasonic sensing and time-frequency techniques. A parsimonious representation is first constructed for the ultrasonic signals using the modified matching pursuit decomposition (MMPD) method. This decomposition is then employed to compute projections onto the various damage classes, and classification is performed based on the magnitude of these projections. Results are presented for the detection of fatigue damage in Al-6061 and Al-2024 plates tested under 3-point bending.

Original languageEnglish (US)
Title of host publicationProceedings of SPIE - The International Society for Optical Engineering
Volume6926
DOIs
StatePublished - 2008
EventModeling, Signal Processing, and Control for Smart Structures 2008 - San Diego, CA, United States
Duration: Mar 10 2008Mar 12 2008

Other

OtherModeling, Signal Processing, and Control for Smart Structures 2008
CountryUnited States
CitySan Diego, CA
Period3/10/083/12/08

Fingerprint

plastic deformation
Plastic deformation
ultrasonics
Ultrasonics
damage
aluminum
Aluminum
Fatigue damage
Decomposition
projection
Lasers
decomposition
interrogation
Plasticity
Transducers
plastic properties
Elastic moduli
lasers
transducers
attenuation

Keywords

  • Damage detection
  • Matching pursuit decomposition
  • Structural health monitoring
  • Time-frequency analysis
  • Ultrasonic sensing

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Condensed Matter Physics

Cite this

Channels, L., Chakraborty, D., Simon, D., Kovvali, N., Spicer, J., Papandreou-Suppappola, A., ... Chattopadhyay, A. (2008). Ultrasonic sensing and time-frequency analysis for detecting plastic deformation in an aluminum plate. In Proceedings of SPIE - The International Society for Optical Engineering (Vol. 6926). [69260P] https://doi.org/10.1117/12.776625

Ultrasonic sensing and time-frequency analysis for detecting plastic deformation in an aluminum plate. / Channels, Lindsey; Chakraborty, Debejyo; Simon, Donna; Kovvali, Narayan; Spicer, James; Papandreou-Suppappola, Antonia; Cochran, Douglas; Peralta, Pedro; Chattopadhyay, Aditi.

Proceedings of SPIE - The International Society for Optical Engineering. Vol. 6926 2008. 69260P.

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

Channels, L, Chakraborty, D, Simon, D, Kovvali, N, Spicer, J, Papandreou-Suppappola, A, Cochran, D, Peralta, P & Chattopadhyay, A 2008, Ultrasonic sensing and time-frequency analysis for detecting plastic deformation in an aluminum plate. in Proceedings of SPIE - The International Society for Optical Engineering. vol. 6926, 69260P, Modeling, Signal Processing, and Control for Smart Structures 2008, San Diego, CA, United States, 3/10/08. https://doi.org/10.1117/12.776625
Channels L, Chakraborty D, Simon D, Kovvali N, Spicer J, Papandreou-Suppappola A et al. Ultrasonic sensing and time-frequency analysis for detecting plastic deformation in an aluminum plate. In Proceedings of SPIE - The International Society for Optical Engineering. Vol. 6926. 2008. 69260P https://doi.org/10.1117/12.776625
Channels, Lindsey ; Chakraborty, Debejyo ; Simon, Donna ; Kovvali, Narayan ; Spicer, James ; Papandreou-Suppappola, Antonia ; Cochran, Douglas ; Peralta, Pedro ; Chattopadhyay, Aditi. / Ultrasonic sensing and time-frequency analysis for detecting plastic deformation in an aluminum plate. Proceedings of SPIE - The International Society for Optical Engineering. Vol. 6926 2008.
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