The sclerometer, also known as the Turner-sclerometer (from Ancient Greek: σκληρός meaning "hard"), is an instrument used by metallurgists, material scientists and mineralogists to measure the scratch hardness of materials. It was invented in 1896 by Thomas Turner (1861–1951), the first Professor of metallurgy in Britain, at the University of Birmingham.
The Turner-Sclerometer test consists of measuring the amount of load required to make a scratch.[1] [2] In test a weighted diamond point is drawn, once forward and once backward, over the smooth surface of the material to be tested. The hardness number is the weight in grams required to produce a standard scratch. The scratch selected is one which is just visible to the naked eye as a dark line on a bright reflecting surface. It is also the scratch which can just be felt with the edge of a quill when the latter is drawn over the smooth surface at right angles to a series of such scratches produced by regularly increasing weights.
YouTube Encyclopedic
-
1/3Views:5613751 214
-
Magnetic Brinell & Rockwell Hardness Tester Meter Sclerometer PHBR 100
-
How to Take a Measurement on the IC-FR5120 Fruit Hardness Tester (20 kg)
-
New Small Portable Rockwell Hardness Tester Meter Sclerometer PHR 1
Transcription
See also
- Hardness – Measure of a material's resistance to localized plastic deformation
- Scleroscope – Instrument used to measure rebound hardness
- Tribometer – Instrument that measures friction and wear between surfaces
References
- ^ Bolton, William; Higgins, R.A. (2014). Materials for Engineers and Technicians. Routledge. p. 37. ISBN 978-1-317-67613-3.
- ^ Machinery's Handbook 6th edition.
External links
- Testing the Hardness of Metals Archived 2012-07-17 at the Wayback Machine
- Albrecht, Erik Bear (2001-08-03). "Testing the Hardness of Metals". Archived from the original on 2001-08-03. Retrieved 2022-01-13.[unreliable source?]
- Oberg, Erik; Jones, Franklin D. (1924). "Testing the Hardness of Metals". Machinery's Handbook (Sixth ed.). New York: Industrial Press. pp. 1322–1326.
 | This standards- or measurement-related article is a stub. You can help Wikipedia by expanding it. |
 | This technology-related article is a stub. You can help Wikipedia by expanding it. |
 | This tool article is a stub. You can help Wikipedia by expanding it. |
 | This mineralogy article is a stub. You can help Wikipedia by expanding it. |
This page was last edited on 5 February 2024, at 19:43