Search results
Results from the WOW.Com Content Network
The Janka hardness test (English: / ˈ dʒ æ ŋ k ə /; [1] German:), created by Austrian-born American researcher Gabriel Janka (1864–1932), measures the resistance of a sample of wood to denting and wear. [citation needed] It measures the force required to embed an 11.28-millimeter-diameter (7 ⁄ 16 in) steel ball halfway into a sample of ...
Download as PDF; Printable version; In other projects Wikidata item; ... The Vickers hardness test; The Brinell scale; The Janka hardness test; The Rockwell scale;
Download as PDF; Printable version; In other projects Wikimedia Commons; Wikidata item; ... Janka hardness test; K. Knoop hardness test; Korsunsky Work-of-Indentation ...
Hardness Testing. Vickers hardness test (HV), which has one of the widest scales; Brinell hardness test (HB) Knoop hardness test (HK), for measurement over small areas; Janka hardness test, for wood; Meyer hardness test; Rockwell hardness test (HR), principally used in the USA; Shore durometer hardness, used for polymers; Barcol hardness test ...
The hardness of traditional bamboo flooring ranges from 1180 (carbonized horizontal) to around 1380 (natural), while newer manufacturing techniques including strand woven bamboo flooring range from 3000 to over 5000 using the Janka hardness test.
Knoop hardness test (HK), for measurement over small areas, widely used to test glass or ceramic material. [8] Janka hardness test, for wood; Meyer hardness test; Rockwell hardness test (HR), principally used in the USA. HRA, HRB and HRC scales are most widely used. [9] Shore hardness test, for polymers, widely used in the rubber industry. [10]
Lignum vitae is hard and durable, and is also the densest wood traded (average dried density: ~79 lb/ft 3 or ~1,260 kg/m 3); [4] it will easily sink in water. On the Janka scale of hardness, which measures hardness of woods, lignum vitae ranks highest of the trade woods, with a Janka hardness of 4,390 lbf (compared with Olneya at 3,260 lbf, [5] African blackwood at 2,940 lbf, hickory at 1,820 ...
A variety of hardness-testing methods are available, including the Vickers, Brinell, Rockwell, Meyer and Leeb tests. Although it is impossible in many cases to give an exact conversion, it is possible to give an approximate material-specific comparison table for steels .