• SAE AIR 877B

SAE AIR 877B

Aerospace - Particle Count Data Conversion and Extrapolation ( Reaffirmed: Jun 2002 )

SAE International , 01/01/1996

Publisher: SAE

File Format: PDF

$80.00$160.05


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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