Thanks Carl, for this clarifying and comprehensive information you gave me.

The first and most striking eye-opener for me to read was the notice that fibre composites are by nature inhomogeneous (resin and fibres) and anisotropic (=not as strong in each direction).

This very fact alone will always create fatigue!!!

I've never realized that.


ronald
RAIDER-15 (homebuilt)

hey boy, what did you do over there, alone far out at sea?..
"huh....., that's the only place where I'm happy, sir.