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Abbott-Firestone curve : ウィキペディア英語版
Abbott-Firestone curve

The Abbott-Firestone curve or bearing area curve (BAC) describes the surface texture of an object. The curve could be found from a profile trace by drawing lines parallel to the datum and measuring the fraction of the line which lies within the profile.
Mathematically it is the cumulative probability density function of the surface profile's height and can be calculated by integrating the profile trace.
The Abbott-Firestone was first described by EJ Abbott and FA Firestone in 1933. It is useful for understanding the properties of sealing and bearing surfaces. It is commonly used in the engineering and manufacturing of piston cylinder bores of internal combustion engines. The shape of the curve is distilled into several of the surface roughness parameters, especially the Rk family of parameters.
==References==


抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)
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