hardness test
21Hardness comparison — There are a large number of hardness testing methods available (eg. Vickers, Brinell and Rockwell). Although it is impossible in many cases to give an exact conversion it is possible to give a comparison table. Hardness Comparison Table See also… …
22hardness number — the number used to designate the hardness of metal. The number is related to the scale of values of a particular hardness test, as Rockwell B 80 or Brinell 150 …
23hardness testing — kietumo bandymas statusas T sritis fizika atitikmenys: angl. hardness test; hardness testing vok. Härteprüfung, f rus. испытание на твёрдость, n pranc. essai de dureté, m …
24Pencil hardness test — Испытание на твёрдость царапанием карандашом …
25Brinell hardness test — …
26test — 1. To prove; to try a substance; to determine the chemical nature of a substance by means of reagents. 2. A method of examination, as to determine the presence or absence of a definite disease or of some substance in any of the fluids, tissues,… …
27test — I (New American Roget s College Thesaurus) n. examination; trial, essay; criterion; experiment. II (Roget s IV) n. 1. [A check for adequacy] Syn. inspection, analysis, countdown, probing, inquiry, inquest, elimination, proving ground(s), training …
28Indentation hardness — tests are used to determine the hardness of a material to deformation. Several such tests exist, wherein the examined material is indented until an impression is formed; these tests can be performed on a macroscopic or microscopic scale. When… …
29Mohs scale of mineral hardness — The Mohs scale of mineral hardness characterizes the scratch resistance of various minerals through the ability of a harder material to scratch a softer material. It was created in 1812 by the German geologist and mineralogist Friedrich Mohs and… …
30Knoop hardness — ▪ mineralogy a measure of the hardness of a material, calculated by measuring the indentation produced by a diamond tip that is pressed onto the surface of a sample. The test was devised in 1939 by F. Knoop and colleagues at the National… …
