A co-inventor of the micro hardness test that bears his name
Frederick Knoop (1878–1943)[1] was an American physicist, metallurgist and instrument maker, who worked at the U.S. National Bureau of Standards in 1939. He was the inventor of the micro hardness test that is named after him.
Knoop's diamond indenting tool
© Frederick Knoop, NIST, 1939
Publications
- F. Knoop, C.G. Peters and W.B. Emerson: A sensitive pyramidal-diamond tool for indentation measurements. In: Journal of Research of the National Bureau of Standards, Vol. 23, July 1939, p. 39-61. See also pdf file by NIST.
Patents
Indenting apparatus for light loads
© Frederick Knoop, NIST, 1939
Standards
• ASTM E384 – 17: Standard Test Method for Microindentation Hardness of
Materials.
• DIN EN ISO 4545-1:2018-07: Metallische Werkstoffe - Härteprüfung nach Knoop - Teil 1: Prüfverfahren (ISO 4545-1:2017).
References
- Knoop hardness. In: Australian English dictionary. 2014.