Standardization of a Volumetric Displacement Measurement for Two-Body Abrasion Scratch Test Data Analysis This work lays the foundation for updating scratch measurement standards to improve modeling and characterization of three-body abrasion test results. This benefit is made apparent when a tip creates an intricate contour having multiple peaks and valleys within a single scratch. Furthermore, by investigating the use of custom scratch tips for our specific needs, the usefulness of having an abrasion metric that can measure the displaced volume in this standardized manner, and not just by scratch width alone, is reinforced. Data are presented to show that different combinations of scratch tips and abraded materials can actually yield the same scratch width, but result in different volume displacement or removal measurements and therefore, the ZOI method is more discriminating than the ASTM method scratch width. Documenting additional changes to various surface roughness parameters also allows key material attributes of importance to ultimate design applications to be quantified, such as depth of penetration and final abraded surface roughness. The ZOI is used to calculate a more robust data set of volume measurements that can be used to computationally reconstruct a resultant profile for detailed analysis. The ZOI has been found to be at least twice the size of a standard width measurement, in some cases considerably greater, indicating that at least half of the disturbed surface area would be neglected without this insight. The ZOI describes the full surface profile of all peaks and valleys, rather than just measuring a scratch width as currently defined by the ASTM G 171 Standard. This is achieved by defining a new abrasion region termed Zone of Interaction (ZOI). The objective of this work was to evaluate a set of standardized metrics proposed for characterizing a surface that has been scratched from a two-body abrasion test. Further - more, by investigating the use of custom scratch tips for specific needs, the usefulness of having an abrasion metric that can measure the displaced volume in this standardized Documenting additional changes to various surface roughness par ameters also allows key material attributes of importance to ultimate design applications to be quantified, such as depth of penetration and final abraded surface roughness. The ZOI is used to calculate a more robust data set of volume measurements that can be used to computationally reconstruct a resultant profile for de tailed analysis. The ZOI has been found to be at least twice the size of a standard width measurement in some cases, considerably greater, indicating that at least half of the disturbed surface area would be neglected without this insight. The ZOI describes the full surface profile of all peaks and valleys, rather than just measuring a scratch width. Knowing the abrasive nature of an environment ( abrasive)/construction material is crucial to designing durable equipment for use in such surroundings. The relationship between hardness of the abrasive and that of the material being abraded is well understood, such that the abrasive ability of a material can be estimated as a function of the ratio of the hardness of the two interacting materials. In environments where such erosion does not exist, such as the vacuum of the Moon, particles retain sharp geometries associated with fracturing of their parent particles by micrometeorite impacts. Potentially abrasive particles lose sharp and pointed geometrical features through erosion. Klaus, David M.Ībrasion of mechanical components and fabrics by soil on Earth is typically minimized by the effects of atmosphere and water. Validation of Proposed Metrics for Two-Body Abrasion Scratch Test Analysis Standards
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