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Proceedings Paper

Damage assessment of small-scale wind turbine blade using piezoelectric sensors
Author(s): Mi-Sun Rim; Sang-Woo Kim; Eun-Ho Kim; In Lee
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Paper Abstract

Real-time structural health monitoring (SHM) systems are applied many fields. Recently, the interest about wind energy was increased by the demand of clean energy in the world and many researches were actively performed for applying SHM technology to wind turbine systems. Piezoelectric sensor is one kind of sensor which is widely used for SHM system to assess damage creation. In this paper, the small scale wind turbine blade was fabricated and health monitoring of the blade was performed using the piezoelectric sensor. The quasi-static bending test of the blade was carried out and the PVDF (Polyvinylidene fluoride) sensors, which are polymer type piezoelectric materials, were used for health monitoring. Two-cycle test was performed; the load was applied during 350 sec and removed at the first cycle, and load was applied again until the blade was broken completely at the second cycle. The voltage of PVDF sensors were measured during the quasi-static bending test in order to find out the moment when the damage occurrence started. The voltage of the sensor critically changed at the moment of damage occurred.

Paper Details

Date Published: 6 April 2012
PDF: 6 pages
Proc. SPIE 8345, Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems 2012, 834546 (6 April 2012); doi: 10.1117/12.915484
Show Author Affiliations
Mi-Sun Rim, KAIST (Korea, Republic of)
Sang-Woo Kim, KAIST (Korea, Republic of)
Eun-Ho Kim, KAIST (Korea, Republic of)
In Lee, KAIST (Korea, Republic of)

Published in SPIE Proceedings Vol. 8345:
Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems 2012
Masayoshi Tomizuka; Chung-Bang Yun; Jerome P. Lynch, Editor(s)

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