ASTM-D7755 Standard Practice for Determining the Wear Volume on Standard Test Pieces Used by High-Frequency, Linear-Oscillation (SRV) Test Machine

ASTM-D7755 - 2011 R22 EDITION - CURRENT
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Standard Practice for Determining the Wear Volume on Standard Test Pieces Used by High-Frequency, Linear-Oscillation (SRV) Test Machine
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Scope

1.1 This practice covers a procedure for determining the wear volume WV of wear scars and tracks on test pieces tribologically stresses under high-frequency, linear-oscillation motion using a SRV test machine by means of stylus tip profilometry.

1.2 The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only.

1.3 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 and health practices and determine the applicability of regulatory limitations prior to use.

Significance and Use

The determination of the wear volume becomes in tribological testing a key element, as it is more discriminative than the wear scar diameter, because an optically visible wear scar diameter may or may not indicate wear on the surface of the ball and the wear track as an irreversible loss of material. Users of this test method should determine whether results correlate with field performance or other applications.

Note 3—It is believed, that tactile stylus tip profilometer determines the most realistic figure and are more frequent in use, than it can be achieved by optical profilometers operating in a non-contacting mode.

Keywords

lubricating grease and oil; oscillation; SRV; wear; wear volume; ICS Number Code 75.100 (Lubricants, industrial oils and related products)

To find similar documents by ASTM Volume:

05.04 (Petroleum Products and Lubricants (IV): D6973 - latest)

To find similar documents by classification:

75.100 (Lubricants, industrial oils and related products Including mineral oils, fluids for metal working and for temporary protection against corrosion Lubrication systems, see 21.260 Insulating oils, see 29.035.40)

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Document Number

ASTM-D7755-11R22

Revision Level

2011 R22 EDITION

Status

Current

Modification Type

New

Publication Date

Aug. 12, 2022

Document Type

Practice

Page Count

5 pages

Committee Number

D02.L0