Using the equations from: Böhlke, T., & Brüggemann, C. (2001, January 30). Graphical Representation of the Generalized Hooke’s Law. TECHNISCHE MECHANIK, Band 21, Heft 2 (2001), 145–158.
Example: E-Modulus of beech at different moisture contents:
Ozyhar , T., Hering, S., Sanabria, S. J., & Peter Niemz. (2012, September 27). Determining moisture-dependent elastic characteristics of beech wood by means of ultrasonic waves. Berlin; Springer-Verlag. DOI 10.1007/s00226-012-0499-2