Optical and scanning electron microscopy of "hackle streaks" and interference microscopy on fracture surfaces showed that major velocity hackle features can be produced at substantially lower K values than associated with the hackle boundary in glass fracture. A novel method was used to determine crack propagation velocity along the streaks.
Origin
Sandia Nat Labs, New Mexico
Journal Title
J Am Ceram Soc 78 3 1995 689-697
Sector
General
Class
G 1233