Mode selection for structural health monitoring of composite T-joint using ultrasonic guided waves

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

Abstract

Composite T-joints are widely used to join composite structures. However, the performance and reliability of composite T-joints rely on the integrity of the adhesive bonds within the joint. The disbond at the interface of the adhesive bond could cause severe failure of the whole structure. Detecting the disbond before it develops through the whole interface will significantly decrease the risk of failure. Vibration and optic fiber strain measurement methods have been studied extensively for health monitoring of the T-joint. However, those methods are not sensitive to the localized defects. The ultrasonic guided wave technique is a promising tool for detecting localized defects. As an ultrasonic guided wave has multiple propagating modes, identifying optimal mode-frequency combinations is critical. In this work, a mode identification algorithm is developed to find mode-frequency combinations for health monitoring of composite T-joints. Theoretical analysis is performed to predict optimal frequency-mode combinations. Finite element analysis is used to verify the prediction.

Original languageEnglish (US)
Title of host publication28th Annual Technical Conference of the American Society for Composites 2013, ASC 2013
Pages375-385
Number of pages11
StatePublished - Dec 1 2013
Event28th Annual Technical Conference of the American Society for Composites 2013, ASC 2013 - State College, PA, United States
Duration: Sep 9 2013Sep 11 2013

Publication series

Name28th Annual Technical Conference of the American Society for Composites 2013, ASC 2013
Volume1

Other

Other28th Annual Technical Conference of the American Society for Composites 2013, ASC 2013
CountryUnited States
CityState College, PA
Period9/9/139/11/13

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All Science Journal Classification (ASJC) codes

  • Ceramics and Composites

Cite this

Ren, B., & Lissenden, III, C. J. (2013). Mode selection for structural health monitoring of composite T-joint using ultrasonic guided waves. In 28th Annual Technical Conference of the American Society for Composites 2013, ASC 2013 (pp. 375-385). (28th Annual Technical Conference of the American Society for Composites 2013, ASC 2013; Vol. 1).