Peening

The mechanical working of metals by means of hammer blows. Peening tends to stretch the surface of the cold metal, thereby relieving contraction stresses.
Found on http://www.diracdelta.co.uk/science/source/p/e/peening/source.html

Peening

A stream of sharp material particles which break superficial fibres, reducing internal stress fields.
Found on http://www.poeton.co.uk/w1/glossary.htm

Peening

Peening is the process of working a metal`s surface to improve its material properties, usually by mechanical means such as hammer blows or by blasting with shot (shot peening). Peening is normally a cold work process (laser peening being a notable exception{Citation needed|date=January 2011}). It tends to expand the surface of the cold metal, th.
Found on http://en.wikipedia.org/wiki/Peening

Peening

The stretching of metal by hammering or rolling the surface.
Found on http://www.encyclo.co.uk/local/21038

Peening

A technique of blasting the surface of metal with shot. Improves appearance and hardens the surface.
Found on http://www.metalbulletin.com/Glossary.html

Peening

A technique of blasting the surface of metal with shot. Improves appearance and hardens the surface.
Found on http://www.metalbulletin.com/Glossary.html
No exact match found