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Ultrasonic testing of adhesive bonds of thick composites with applications to wind turbine blades
Center for Nondestructive Evaluation Conference Papers, Posters and Presentations
  • Sunil Kishore Chakrapani, Iowa State University
  • Vinay Dayal, Iowa State University
  • Ryan Krafka, Iowa State University
  • Aaron Eldal, Iowa State University
Document Type
Conference Proceeding
Review of Progress in Quantitative Nondestructive Evaluation
Publication Date
(44.4758825, -73.212072)
This paper discusses the use of pulse echo based ultrasonic testing for the inspection of adhesive bonds between very thick composite plates (thickness greater than 30 mm). Large wind turbine blades use very thick composite plates for its main structural members, and the inspection of adhesive bond-line is very vital. A wide gamut of samples was created by changing the thickness of plate and the adhesive. The influence of experimental parameters such as frequency on measurement is studied in this paper. Two different frequencies are chosen, and the measurement error bars are determined experimentally. T-Ray measurements were used to verify and correct results, and conclusions are made based on the combined results.

Copyright 2012 American Institute of Physics. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics.

This article appeared in AIP Conference Proceedings 1430 (2012): 1284–1290 and may be found at

Copyright Owner
American Institute of Physics
Citation Information
Sunil Kishore Chakrapani, Vinay Dayal, Ryan Krafka and Aaron Eldal. "Ultrasonic testing of adhesive bonds of thick composites with applications to wind turbine blades" Burlington, VT(2011)
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