Olsen ductility test

Olsen ductility test

[′ōl·sən dək′til·ə·dē ‚test]
(metallurgy)
A cupping test in which a piece of sheet metal is deformed at the center by a steel ball until fracture occurs; ductility is measured by the height of the cup at the time of failure.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.