Page 446 - Failure Analysis Case Studies II
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(b)
Fig. 4. Photographs of the failed shaft.
two zones: one external zone, rough and bright, as a symmetrical ring up to approximately half of
the radius, and one internal zone, flat and matte, wherein can also be seen some ligaments. The
shape and appearance of these ligaments suggest that they have been originated by torsion in the
final fracture of the shaft.
