Ripple formation through an interface instability from moving growth and erosion sources
The propagation of material interfaces is investigated under the action of a localized moving source which deposits or removes material. Among others the latter process applies to beam cutting techniques. We develop a Kuramoto-Sivashinsky-type model and find a new type of ripple forming mechanism. This theory offers a new explanation for the occurrence of striation patterns which often degrade the quality of cutting edges.
Friedrich
R
Institut fur Theoretische Physik III, Universitat Stuttgart, D-70550 Stuttgart, Germany.
Radons
G
Ditzinger
T
Henning
A