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    ASTM F312-08(2023)

    Standard Test Methods for Microscopical Sizing and Counting Particles from Aerospace Fluids on Membrane Filters
    • 발행일 : 2023-09-01
    • 발행기관 : ASTM
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상세정보

분야 15.03 : 공간시물레이션; 항공우주재료; 고율섬유와 합성물
적용범위

1.1?These test methods cover the determination of the size distribution and quantity of particulate matter contamination from aerospace fluids isolated on a membrane filter. The microscopical techniques described may also be applied to other properly prepared samples of small particles. Two test methods are described for sizing particles as follows:

1.1.1?Test Method A?Particle sizes are measured as the diameter of a circle whose area is equal to the projected area of the particle.

1.1.2?Test Method B?Particle sizes are measured by their longest dimension.

1.2?The test methods are intended for application to particle contamination determination of aerospace fluids, gases, surfaces, and environments.

1.3?The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.

1.4?These test methods do not provide for sizing particles smaller than 5 μm.

Note 1:?Results of these methods are subject to variables inherent in any statistical method. The use of these methods as a standard for initially establishing limits should be avoided unless ample tolerances are permissible.

1.5?This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use.

1.6?This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

국제분류(ICS)코드 49.080 : 항공 유체 체계 및 부품
페이지수 4
Edition 08(2023)

이력정보

No. 표준번호 표준명 발행일 상태
1 ASTM F312-08(2023)상세보기 Standard Test Methods for Microscopical Sizing and Counting Particles from Aerospace Fluids on Membrane Filters 2023-09-01 표준
2 ASTM F312-08(2016)상세보기 Standard Test Methods for Microscopical Sizing and Counting Particles from Aerospace Fluids on Membrane Filters 2016-10-01 구판
3 ASTM F312-08상세보기 Standard Test Methods for Microscopical Sizing and Counting Particles from Aerospace Fluids on Membrane Filters 2008-11-01 구판
4 ASTM F312-97(2003)상세보기 Standard Test Methods for Microscopical Sizing and Counting Particles from Aerospace Fluids on Membrane Filters 1997-04-10 구판
5 ASTM F312-97상세보기 Standard Test Methods for Microscopical Sizing and Counting Particles from Aerospace Fluids on Membrane Filters 1997-01-01 구판

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