I have a wind turbine blade consists of steel chassis and outer surface of fiber glass plies, I want to perform bending test on it. I want to use acoustics emission during the test to detect the existence of any crack or delamination in the fiber glass. My plan to conduct the acoustics emission is:
- Performing pencil-lead break tests on the blade to get the average speed of the acoustics emission wave through the structure.
- Plot curve of ln E (the energy of the wave) versus distance between sensors to get K (attenuation factor)
- inspect if there is crack or a problem.
I want to know what can I do more than that to improve my study using acoustics emission as I'm beginner in that field.
Looks like you are following the standard procedure. The most important is to be able to have a prediction of "what kind of damage will develop in which area". This is empirical but is the key to a successful experiment. Good luck.
Jin, Thanks a lot...
I'm searching in this point how can I assess the damage behavior in the blade.
Do you have a paper or a book that describe the method of defining the problems whether delamination,cracking,..etc?
You can use AE to monitor fracture in your blade turbine by attaching the piezoelectric transducers to it during testing
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