Plate waves structural health monitoring of composite structures

Jagannathan Rajagopalan, B. V. Somasekhar, Krishnan Balasubramaniam, C. V. Krishnamurthy

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

4 Citations (Scopus)

Abstract

Layered composite plate-like structures are finding an increasing range of applications in the aerospace industry. Structural Health Monitoring (SHM) of such structures is seen as a paradigm that will embrace efficient non-destructive testing/evaluation techniques. The present study demonstrates two techniques that have the potential for the SHM of multi-layered composite structures. The first technique is based on multi-transmitter-multi-receiver (MTMR) technique with tomographic methods used for data reconstruction. In the MTMR, the possibility of SHM using algebraic reconstruction techniques (ART) for tomographic imaging with Lamb wave data measured in realistic materials is examined. Commercially available narrow bandwidth PZT crystals were used as sensors on multi-layered quasi-isotropic and cross-ply composite plates with and without defects. Defects (through holes and low velocity impact delaminations) were synthetic and have been chosen to simulate impact damage in composite plates. To achieve reasonable image quality, conventional cross-hole configuration is replaced by a new modified cross-hole configuration that also optimizes the number of sensors. The second technique is a single-transmitter- multi-receiver (STMR) technique that is more compact and uses reconstruction techniques that are analogus to synthetic aperture techniques. Here, the phase shifting is performed on the individual signals based on the guided wave dispersion relationships. The reconstruction algorithm uses summation of the phase shifted signals to image the location of defects, portions of the plate edges, and any reflectors from inherent structural features of the component.

Original languageEnglish (US)
Title of host publicationAIP Conference Proceedings
Pages1802-1808
Number of pages7
Volume760
DOIs
StatePublished - Apr 9 2005
Externally publishedYes
EventReview of Progress in Quantitative Nondestructive Evaluation - Golden, CO, United States
Duration: Jul 25 2004Jul 30 2004

Other

OtherReview of Progress in Quantitative Nondestructive Evaluation
CountryUnited States
CityGolden, CO
Period7/25/047/30/04

Fingerprint

structural health monitoring
composite structures
transmitters
receivers
composite materials
defects
impact damage
aerospace industry
synthetic apertures
Lamb waves
wave dispersion
sensors
configurations
low speed
reflectors
bandwidth
evaluation
crystals

ASJC Scopus subject areas

  • Physics and Astronomy(all)

Cite this

Rajagopalan, J., Somasekhar, B. V., Balasubramaniam, K., & Krishnamurthy, C. V. (2005). Plate waves structural health monitoring of composite structures. In AIP Conference Proceedings (Vol. 760, pp. 1802-1808) https://doi.org/10.1063/1.1916889

Plate waves structural health monitoring of composite structures. / Rajagopalan, Jagannathan; Somasekhar, B. V.; Balasubramaniam, Krishnan; Krishnamurthy, C. V.

AIP Conference Proceedings. Vol. 760 2005. p. 1802-1808.

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

Rajagopalan, J, Somasekhar, BV, Balasubramaniam, K & Krishnamurthy, CV 2005, Plate waves structural health monitoring of composite structures. in AIP Conference Proceedings. vol. 760, pp. 1802-1808, Review of Progress in Quantitative Nondestructive Evaluation, Golden, CO, United States, 7/25/04. https://doi.org/10.1063/1.1916889
Rajagopalan J, Somasekhar BV, Balasubramaniam K, Krishnamurthy CV. Plate waves structural health monitoring of composite structures. In AIP Conference Proceedings. Vol. 760. 2005. p. 1802-1808 https://doi.org/10.1063/1.1916889
Rajagopalan, Jagannathan ; Somasekhar, B. V. ; Balasubramaniam, Krishnan ; Krishnamurthy, C. V. / Plate waves structural health monitoring of composite structures. AIP Conference Proceedings. Vol. 760 2005. pp. 1802-1808
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