Ultrasonic testing of adhesive bonds of thick composites with applications to wind turbine blades | Zendy

Sunil Kishore Chakrapani | Zendy; Vinay Dayal | Zendy; Ryan Krafka | Zendy; Aaron Eldal | Zendy

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Ultrasonic testing of adhesive bonds of thick composites with applications to wind turbine blades

Author(s) -

Sunil Kishore Chakrapani,

Vinay Dayal,

Ryan Krafka,

Aaron Eldal

Publication year - 2012

Publication title -

aip conference proceedings

Language(s) - English

Resource type - Conference proceedings

SCImago Journal Rank - 0.177

H-Index - 75

eISSN - 1551-7616

pISSN - 0094-243X

DOI - 10.1063/1.4716366

Subject(s) - adhesive , materials science , composite material , ultrasonic testing , composite number , turbine blade , ultrasonic sensor , epoxy adhesive , adhesive bonding , epoxy , turbine , acoustics , mechanical engineering , engineering , physics , layer (electronics)

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.

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