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This relation permits economically important nondestructive testing of bulk metal deliveries with lightweight, even portable equipment, such as hand-held Rockwell hardness testers.
As of the direction of materials science continues towards studying the basis of properties on smaller and smaller scales, different techniques are used to quantify material characteristics and tendencies.
This effect is attributed to the release of elastic stresses.
Because of this effect the diameter and depth of the indentation do contain errors.
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She has been a member of Infinity Inc., the Justice Society, the Justice League, the Green Lantern Corps, the Outsiders, Blood Pack and the Black Lantern Corps. 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 testing metals, indentation hardness correlates roughly linearly with tensile strength., but it is an imperfect correlation often limited to small ranges of strength and hardness for each indentation geometry. 1959 Volvo, 1949-50 Ford Panel Vans, 1968 Pontiac Bonneville, 1957 Ford SW, etc., etc., etc.Indentation hardness tests are used in mechanical engineering to determine the hardness of a material to deformation.
However, it has been experimentally determined through "strainless hardness tests" that the effect is minimal with smaller indentations.