SAE AIR 877C-2012
航空航天.粒子计数数据转换和外推法

Aerospace - Particle Count Data Conversion and Extrapolation

SAE AIR 877C-2012 发布历史

This document has been declared "Stabilized" and will no longer be subjected to periodic reviews for currency. Users are responsible for verifying references and continued suitability or technical requirements. New technology may exist. 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.

SAE AIR 877C-2012由美国机动车工程师协会 US-SAE 发布于 2012-09-25。

SAE AIR 877C-2012 在中国标准分类中归属于: V04 基础标准与通用方法，在国际标准分类中归属于: 49.080 航空航天用流体系统和零部件。

SAE AIR 877C-2012的历代版本如下：

• 2012年09月25日 SAE AIR 877C-2012 航空航天.粒子计数数据转换和外推法

SAE AIR 877C-2012 航空航天.粒子计数数据转换和外推法 由 SAE AIR 877B-1996 变更而来。

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标准号

SAE AIR 877C-2012

发布日期

2012年09月25日

实施日期

废止日期

无

中国标准分类号

V04

国际标准分类号

49.080

发布单位

US-SAE

引用标准

SAE ARP 598 SAE AS 4059

被代替标准

SAE AIR 877B-1996

适用范围

This document has been declared "Stabilized" and will no longer be subjected to periodic reviews for currency. Users are responsible for verifying references and continued suitability or technical requirements. New technology may exist. 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.