【英文标准名称】:
【原文标准名称】:NFC83-155-1983的补充件1
【标准号】:NFC83-155/A1-1984
【标准状态】:现行
【国别】:法国
【发布日期】:1984-05-01
【实施或试行日期】:1984-05-16
【发布单位】:法国标准化协会(AFNOR)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:
【英文主题词】:
【摘要】:
【中国标准分类号】:L11
【国际标准分类号】:31_060_30
【页数】:1P;A4
【正文语种】:其他


Product Code:SAE AIR877
Title:Aerospace - Particle Count Data Conversion and Extrapolation
Issuing Committee:A-6c1 Contamination And Filtration Committee
Scope: 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.