Good Day: Uwemedimo Nyong Wilson ; re: guidelines to linear elastic fracture mechanics in timbers:
You query is very open-ended. Can you be more specific? Are you looking for background and theory or specific case studies with timber varieties? What references have you used, and have you followed up on the authors cited therein?
If you have internet access - Google Scholar is a starting point.
I am not a specialist, but the following may be of use:
For background on Linear elastic fracture mechanics (LEFM):
Serrano, E. and Gustafsson, P.J., 2007. Fracture mechanics in timber engineering–Strength analyses of components and joints. Materials and structures, 40(1), pp.87-96.
Uwemedimo Nyong Wilson : re: "More are still expected please."
You original query is still very open-ended. Rather than just "expecting" can you be more specific? What are you bringing to the discussion? What references have you used, and have you followed up on the authors cited therein? Are you looking for background and theory or specific case studies with timber varieties?