cloudburst hardness test

cloudburst hardness test

[′klau̇d‚bərst ′härd·nəs ‚test]
(metallurgy)
A procedure in which a shower of steel balls, dropped from a predetermined height, dulls the surface of a hardened part in proportion to its softness and thus reveals defective areas.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.