Dear Eneko,
The UpWind 5-MW reference turbine is based on the NREL 5-MW baseline wind turbine, but the NREL 5-MW specifications as published by NREL do not contain the detailed composite layup and material properties.
I have heard of Nijssen’s paper, but I’ve not seen it available in the public domain (and I don’t have a copy myself).
There is a question regarding the NREL 5-MW blade here on our forum: Structural design of the wind turbine blade. In one of the posts, I gave a link to a Sandia report that talks about groups that have reverse-engineered the composite layup and material properties based on the specified mass and stiffness distributions.
I suggest you contact the authors of these studies to find the data you are seeking. If you find the information, please post a copy.
Best regards,