hardness test


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hardness test

[′härd·nəs ‚test]
(analytical chemistry)
A test to determine the calcium and magnesium content of water.
(engineering)
A test to determine the relative hardness of a metal, mineral, or other material according to one of several scales, such as Brinell, Mohs, or Shore.
References in periodicals archive ?
In 1924, Smith and Sandland introduced the Vickers hardness test method, as an alternative to the Brinell hardness test.
In this study the hardness test was carried out by indenting the diamond tool tip on the prepared weld cross section.
With their next-generation material hardness test instruments, which will launch in October 2012, the company hopes to bring nanoindentation to a broader market while still offering an instrument that can operate within the latest ASTM standards for wide variety of hardness testing methods.
Surface strength and hardness tests can be run on the completed sand mold to help identify soft spots due to uneven compaction or squeeze and verify the hardness of the mold prior to pouring.
The total hardness test before the experimental foods showed that Group A had an overall higher hardness level.
The Elcometer 3045 Persoz & Konig Pendulum Hardness Tester can be used with either pendulum type and this tester has a number of unique features designed to maximise repeatability and reproducibility of the pendulum hardness test method.
The aim of this in-Vitro study to evaluate the depth of cure of Tetric EvoCeram(R) Bulk Fill Composite and Tetric N-Ceram(R) Bulk Fill Composite nano-hybrid low-shrinkage resin based composite materials using the Vickers hardness test. Specimens were fabricated in 4 mm bulk depth and 10 mm width and each sample was light cured using blue phase- G2 light cure device, then finished and polished using Sof-Lex disks.
Wilson Instruments, an Instron company, announces the release of their Ready Block program for Rockwell hardness test blocks.
Scratch resistance is dependent on adhesion as well as hardness and is as much an adhesion test as a hardness test. Hard, but brittle coatings, may give an apparent scratch line of tiny chips.
For a long time, an indentation test, usually referred to as a hardness test, has been the most convenient method for assuring the quality of the mechanical properties of engineering materials.
The part's size, shape, flatness, surface condition, microstructure (homogenous or non-homogenous), effect of indentation on the part's function and number of components to be tested all need to be considered when choosing a hardness test system.