ASTM D7684
Scope
1.1 This guide covers the classification and reporting of results from in-service lubricant particulate debris analysis obtained by microscopic inspection
of wear and contaminant particles extracted from in-service lubricant and hydraulic oil samples. This guide suggests standardized terminology to promote consistent reporting, provides logical
framework to document likely or possible root causes, and supports inference associated machinery health condition or severity based on available debris analysis information.
1.2 This guide shall be used in conjunction with an appropriate wear debris analysis sample preparation and inspection technique including, but not limited
to, one of the following:
1.2.1 Ferrography using linear glass slides,
1.2.2 Ferrography using rotary glass slides,
1.2.3 Patch analysis using patch makers (filtration through membrane filters),
1.2.4 Filter debris analysis,
1.2.5 Magnetic plug inspection, or
1.2.6 Other means used to extract and inspect particulate debris from in-service lubricants.
1.3 This standard is not intended to evaluate or characterize the advantage or disadvantage of one or another of these particular particle extraction and
inspection methods.
1.4 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.
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.
Keywords
analytical ferrography; condition monitoring; contaminant particles; filter patch; in-service lubricants; membrane filtration; particle analysis; wear; wear debris analysis; wear particle
analysis; wear particles;
ICS Code
ICS Number Code 75.100 (Lubricants, industrial oils and related products)
DOI: 10.1520/D7684-24