Root fillet | Article about root fillet by The Free Dictionary
root fillet[′rüt ‚fil·ət]
The rounded corner at the angle of a gear tooth flank and the bottom land.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
References in periodicals archive
Most of these studies address two major issues: the geometry of the tooth root fillet
(Hebbal et al., 2009) and the rim thickness (Nan & Zang, 2008).
If a root fillet
on a gear, for instance, had only partial coverage, the flat or undimpled areas now would carry higher tensile stresses and premature gear failure is possible.
This stress concentration at the root is further amplified by the second fact--the absence of root fillets