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SAE AIR 877B
- Aerospace - Particle Count Data Conversion and Extrapolation ( Reaffirmed: Jun 2002 )
- standard by SAE International, 01/01/1996
- Publisher: SAE
$37.00$74.00
This Aerospace Information Report (AIR) describes a mathematical model that can be used to analyze particle count data. Particle counts that fit the model can be graphically displayed, converted from one counting size-frequency range to another, and extrapolated to estimate counts beyond the measured range. Derivation, applications and calculations are described.Cumulative particle counts larger than stated size-range are fitted against a modified log-normal distribution function by plotting on special log-log graph paper. Many real particle distributions approximate a straight line, showing good fit for this log-normal model. The resultant plot provides a basis for further analysis, including size-range conversion and extrapolation.
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