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SAE AIR877C

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Omfang

This SAE Aerospace Information Report (AIR) describes a mathematical model that can be used to analyze partial 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. Outline of Method: Cumulative particle counts larger than stated size-range are fitted against a modified long-normal distribution function by plotting on special log-log2 graph paper. Many real particle distributions approximate a straight line, shoeing good fit for this long-normal model. The resultant plot provides a basis for further analysis, including size-range conversion and extrapolation.

Dokumentinformasjon

  • Standard fra SAE_AC
  • Publisert:
  • Versjon: 0
  • Varetype: IS