Effects of temperature variations on guided waves propagating in composite structures
Paper i proceeding, 2016

The effects of temperature variations on guided waves propagating in a composite plate is investigated experimentally in a cold climate chamber. The material is a common material used to manufacture rotor blades of wind turbines. The temperature range is 25°C to −25°C and effects of temperature variations on amplitude and phase shift of the received signal are investigated. In order to apply the effects of lowering the temperature on the received signal, the Baseline Signal Stretch method is modified and used. The modification is based on decomposing the signal into symmetric and asymmetric modes and applying two different stretch factors on each of them. Finally the results obtained based on the new method is compared with the results of application of Baseline Signal Stretch with one stretch factor and experimental measurements.

ice detection

guided waves

Temperature variations

baseline signal stretch

Composite structure

wind turbine

Författare

Siavash Shoja

Chalmers, Tillämpad mekanik, Dynamik

Viktor Berbyuk

Chalmers, Tillämpad mekanik, Dynamik

Anders E Boström

Chalmers, Tillämpad mekanik, Dynamik

Proceedings of SPIE - The International Society for Optical Engineering

0277786X (ISSN) 1996756X (eISSN)

Vol. SPIE 9806 1-12 980605

Ämneskategorier

Teknisk mekanik

Kompositmaterial och -teknik

Styrkeområden

Energi

DOI

10.1117/12.2218791

ISBN

9781510600478