Method and apparatus for measuring, analyzing, and characterizing irregularities on a surface of an article
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United States of America Patent
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Mar 21, 2006
Grant Date -
N/A
app pub date -
Jul 29, 2002
filing date -
Jul 28, 2001
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A surface capacity parameter is determined for a surface of an article having irregularities therein that can be characterized by peaks and valleys relative to a reference point. Initially, an area of interest on the surface of the article and a lateral resolution of that area of interest are determined. An apparatus generates a visual representation of the area of interest on the surface of the article. A deflection contact part factor for the article is calculated, and a bearing ratio curve level is determined based upon the calculated deflection contact part factor and the magnitude of the height or distance between the tallest peak and the lowest valley on the surface of the article. The volume of the material comprising the peaks in the surface of the article and the volume of the space in the surface of the article that is available for the retention of a fluid, such as a lubricant, are determined. Lastly, a surface capacity parameter is calculated as the ratio of the volume of the material comprising the peaks in the surface of the article to the volume of the volume of the space comprising the valleys in the surface of the article.
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