Articles by Robert Allen

Microhardness Testers (MHT) are used to judge and signify the rigidity and stiffness of materials. This is usually done by creating a localized point of penetration by making use of a standardized rounded or pointed indenter made of carbide, diamond or hard steel.

What are Portable Hardness Testers Portable Hardness Testers, as the name suggests, are portable (moveable) instruments that are used for on-site hardness measurement tests. The advantage of portable hardness testers over conventional stationary testers is that while the latter require the sample to be brought to the testing apparatus, the portable testers can be taken to the site for the hardness test.

Introduction Rockwell Hardness Testers, like other hardness testers, measure the hardness of materials by measuring the materials resistance to penetration under a specific force. Unlike other testers, however, the Rockwell testers measure the net increase in the depth of indentation (rather than the hemispherical area) as and when a load is applied.

Introduction One of the earliest invented methods of measuring the hardness of materials, the Brinell test, makes use of a special kind of tabletop hardness tester - the Brinell Hardness Tester. The Brinell Hardness Testers give the Brinell Hardness of a material by means of creating an indentation on the specimen material surface.

What is Vickers Hardness Test Vickers Hardness Test is the most widely accepted method for measuring the hardness of materials. Vickers test provides a continuous scale of hardness and it can be used for all metals - from the very soft ones to very hard metals.

What is Mohs Hardness Testing Evolved by the German mineralogist Friedrich Mohs in 1812, Mohs Hardness Test is one among the earliest ways of measuring hardness and it revolves round the observation whether a materials surface is scratched by a substance of known or defined hardness.

What is Barcol Hardness Testing Barcol Hardness Testing is a method of measuring the hardness of reinforced and non-reinforced rigid plastics. The hardness value is arrived at by assessing the plastic materials resistance to being penetrated by the indenter.

What is Janka Wood Hardness Rating Janka Wood Hardness Rating is a relative measurement of the wood's impact-resistance and wear-resistance, an evaluation of its hardness. The higher the rating, the harder is the species of wood.

Hardness has been variously defined as a solid materials resistance to abrasion, penetration, scratching, tear or wear. This proves that hardness is not an inherent property of a material rather the result of a defined measurement procedure carried out as part of hardness tests.

Introduction Explore, as you will, the relationship between rebound hardness and Scleroscope, you shall be introduced to a rather unique hardness measure test - the Rebound Hardness Test or the Dynamic Hardness Test.