If I remeber correct, it was in the mid 70's I was involved in a fatigue test on glider wings.
We had customers in Australia and we had to make proof that within the amount of hours they fly, to wing does not get tired. Sorry English in not my native language. Some of them made 1000 hours a year, they might have slept in the glider
Gliding in Germany is fancy from mid April till mid June. After that you have to move to the Italian mountains, France or oversees. So not enough hours for oversee customers.
In Aussiland its is more or less a whole year sport. With the help of the Technical University of Stuttgart we found a trick to simulate years of use within hours. We took a tennis rack, bolt this in a machine a swung this in a high frequency. No fatigue what so ever. Till today there is no fatigue known on fibre parts.
As far as I know, there is nothing stiffer then carbon. Comparing weight/stiffens it beats everything.
there is nothing coming even close to this.
The only benefit I see is the heat ressisentence and that you have no corrosion on Ti. I have no idea what we face on what we call Titanal, what is a comby of Ti and Alu.
The last and the Germans call it "Totschlagargument" did not find any translation.
The carbon fuselage is hollow. I can add at specific areas layers to eat up certain forces, but only at those places. On this metal fuselage you mill the design and you don't cover the neutral fiber. You gain dead weight. This engineering law is also known in Switzerland.
Anyway, I am out of this thread. No Ti or AluTi fuse for me no matter what the marketing drum is rumbling