Fracture toughness of Fused Silica and Zerodur
Callahan 1/30/14
From: http://www.lle.rochester.edu/media/publications/lle_review/documents/v61/61_05_Slurry.pdf
The most common polishing agents are Ce02 and Zr02 with mean
particle sizes ranging from 0.01 to 3 micron.
See: http://www.sigmadyne.com/sigweb/downloads/SPIE-5176-3.pdf
From fracture mechanics we know cracks grow if Ki > Kic.
The critical stress intensity factor for fused silica is 0.3 and Zerodur is 0.9
Note that rupture occurs at KIC.
The critical stress intensity factor for fused silica is 0.3.
See: http://www.sciencedirect.com/science/article/pii/S0955221900002417
Max principal stress in ZTF window w/ 3mm O-ring
Max principal stress for O-ring removed from ZTF corners
Max principal stress set to design stress
What is the critical crack size before KI=KIC?
This is the point of rupture.
What is the critical crack size vs principal stress?