- ball hardness test
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определение твёрдости вдавливанием шарика, определение твёрдости по Бринеллю
Англо-русский словарь технических терминов. 2005.
ball hardness test
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Vickers hardness test — A Vickers hardness tester The Vickers hardness test was developed in 1924 by Smith and Sandland at Vickers Ltd as an alternative to the Brinell method to measure the hardness of materials.[1] The Vickers test is often easier to use than other… … Wikipedia
Janka hardness test — hi The Janka hardness test measures the hardness of wood. It involves measuring the force required to embed a 11.28 millimeter (0.444 inch) steel ball into wood to half its diameter. This method was chosen so that the result would leave an… … Wikipedia
Brinell hardness test — a test made to determine hardness on relatively thick sections of metal by pressing a steel ball of specified diameter into a test specimen under a specified load. This test is seldom used on copper and copper base alloys … Mechanics glossary
Rockwell hardness — (RH ) a measure of the hardness of a metal introduced by Rockwell in 1922. In a Rockwell hardness test, a penetrator makes an indentation in the metal under two constant loads, a minor load (generally 10 kilograms) and then a major load. The… … Dictionary of units of measurement
Brinell hardness — Bri·nell hardness brə .nel n the hardness of a metal or alloy measured by hydraulically pressing a hard ball under a standard load into the specimen Brinell Johan August (1849 1925) Swedish engineer. After studying the internal composition of… … Medical dictionary
Cricket ball — Cricket portal … Wikipedia
Brinell hardness — (HB or BHN) a measure of the hardness of a metal introduced by J. A. Brinell in 1900. In the Brinell test (generally used for metals of uniform hardness), a hard object such as a steel ball is pressed into the material being tested. The… … Dictionary of units of measurement
Brinell test — [bri nel′] n. 〚after J. A. Brinell (1849 1925), Swed engineer〛 a test for determining the relative hardness (Brinell hardness) of a metal by measuring the diameter of the indentation made when a hardened steel ball is forced into the metal under… … Universalium
Brinell test — [bri nel′] n. [after J. A. Brinell (1849 1925), Swed engineer] a test for determining the relative hardness (Brinell hardness) of a metal by measuring the diameter of the indentation made when a hardened steel ball is forced into the metal under… … English World dictionary
Bri|nell hardness — «brih NEHL», the relative hardness of a metal, determined by pressing a steel ball under a given pressure into the substance under test. ╂[< J. A. Brinell, 1849 1925, Swedish engineer, who devised the test for it] … Useful english dictionary
Brinell hardness number — Metall. a rating obtained from a test (Brinell test) to determine the hardness of a metal by pressing a steel ball of a standard size into the metal using a standard force. Also called Brinell number. Abbr.: Bhn [named after J.A. Brinell (1849… … Universalium
