Page 265 - Fiber Fracture
P. 265
248 K. Yoshida
Fig. 6. SEM micrographs of wire breakaFc duc IO inclusion. (a) Do = 54 brn. (b) Do = 60 lim.
Causes of wire breaks
(673 samples1
Others
Weld break '
Tension break Inclusion
(52%)
\vc ii +?,rct.ir* 1~ct-ts1lr hrl ii, %xhnical Conffmnce (Oct 1997)
Ag. 7. Causes of wire breakage during copper wiredrawing (Raskin, 1997).
FEA OF WIRE BREAKAGE IN SUPERFINE WIREDRAWING WITH
INCLUSION
Analysis Method
A general-purpose finite-element method code (FEM), MARC, was used for the
analysis. Fig. 8 shows the analytical model used, where black parts indicate inclusions.
