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hardness point

См. также в других словарях:

  • Hardness — This article is about mechanical properties of materials. For other uses, see Hard. Hardness is the measure of how resistant solid matter is to various kinds of permanent shape change when a force is applied. Macroscopic hardness is generally… …   Wikipedia

  • Barcol hardness test — The Barcol hardness test characterizes the indentation hardness of materials through the depth of penetration of an indentor, loaded on a material sample and compared to the penetration in a reference material. The method is most often used for… …   Wikipedia

  • Knoop hardness test — The Knoop hardness test is a microhardness test a test for mechanical hardness used particularly for very brittle materials or thin sheets, where only a small indentation may be made for testing purposes. A pyramidal diamond point is pressed into …   Wikipedia

  • Heart hardness — Heart Heart (h[aum]rt), n. [OE. harte, herte, heorte, AS. heorte; akin to OS. herta, OFies. hirte, D. hart, OHG. herza, G. herz, Icel. hjarta, Sw. hjerta, Goth. ha[ i]rt[=o], Lith. szirdis, Russ. serdtse, Ir. cridhe, L. cor, Gr. kardi a, kh^r.… …   The Collaborative International Dictionary of English

  • Heart point — Heart Heart (h[aum]rt), n. [OE. harte, herte, heorte, AS. heorte; akin to OS. herta, OFies. hirte, D. hart, OHG. herza, G. herz, Icel. hjarta, Sw. hjerta, Goth. ha[ i]rt[=o], Lith. szirdis, Russ. serdtse, Ir. cridhe, L. cor, Gr. kardi a, kh^r.… …   The Collaborative International Dictionary of English

  • Vickers hardness number — a number indicative of the degree of relative hardness of materials, determined by measuring the long diagonals of indentation made by pressing the pyramidal point of a diamond into the surface of the material being tested; equal to the load in… …   Medical dictionary

  • Knoop hardness — (HK or KHN)    a measure of the hardness of a metal introduced by Knoop in 1939. The Knoop test is similar to the Vickers test in that a diamond penetrator is used to indent the sample being tested, but it uses a rhombohedral diamond rather than… …   Dictionary of units of measurement

  • Vicat softening point — or Vicat hardness is the determination of the softening point for materials such as polyethylene, which have no definite melting point. It is taken as the temperature at which the specimen is penetrated to a depth of 1 mm by a flat ended needle… …   Wikipedia

  • Diamond-point tool — Diamond Di a*mond (?; 277), n. [OE. diamaund, diamaunt, F. diamant, corrupted, fr. L. adamas, the hardest iron, steel, diamond, Gr. ?. Perh. the corruption is due to the influence of Gr. ? transparent. See {Adamant}, {Tame}.] 1. A precious stone… …   The Collaborative International Dictionary of English

  • Cutting tool (machining) — In the context of machining, a cutting tool (or cutter) is any tool that is used to remove material from the workpiece by means of shear deformation. Cutting may be accomplished by single point or multipoint tools. Single point tools are used in… …   Wikipedia

  • набор минералов для определения твёрдости минералов по шкале Мооса — — [Англо русский геммологический словарь. Красноярск, КрасБерри. 2007.] Тематики геммология и ювелирное производство EN hardness point …   Справочник технического переводчика

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