ASTM D6616-01a

Standard Test Method for Measuring Viscosity at High Shear Rate by Tapered Bearing Simulator Viscometer At 100°C

SCOPE
1.1 This test method covers the laboratory determination of the viscosity of engine oils at 100°C and 1·106s -1 using the Tapered Bearing Simulator (TBS) viscometer.
Note 1—This test method is similar to Test Method D 4683 which uses the same TBS viscometer to measure high shear viscosity at 150°C.
1.2 The Newtonian calibration oils used to establish this test method range from approximately 5 to 12 mPa·s (cP) at 100°C and either the manual or automated protocol was used by each participant in developing the precision statement. The viscosity range of the test method at this temperature is from 1 mPa·s (cP) to above 25 mPa·s (cP, depending on the model of TBS.
1.3 The non-Newtonian reference oil used to establish the shear rate of 1·106s-1 for this test method has a viscosity of approximately 10 mPa·s at 100°C.
1.4 Application to petroleum products other than engine oil has not been determined in preparing the viscometric information for this test method.
1.5 This test method uses the milliPascal second (mPa·s) as the unit of viscosity. This unit is equivalent to the centiPoise (cP), which is shown in parentheses.
1.6 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 to determine the applicability of regulatory limitations prior to use.

General Information

• Status: Historical
• Publication Date: 09-Nov-2001
• ICS: 17.060 - Measurement of volume, mass, density, viscosity
• Technical Committee: D02 - Petroleum Products, Liquid Fuels, and Lubricants
• Drafting Committee: D02.07 - Flow Properties

Relations

• Replaces: ASTM D6616-01 - Standard Test Method for Measuring Viscosity at High Shear Rate by Tapered Bearing Simulator Viscometer At 100°C
• Effective Date: 10-Nov-2001
• Replaced By: ASTM D6616-01a(2006) - Standard Test Method for Measuring Viscosity at High Shear Rate by Tapered Bearing Simulator Viscometer At 100°C
• Effective Date: 01-May-2006
• Referred By: ASTM D8185-18 - Standard Guide for In-Service Lubricant Viscosity Measurement
• Effective Date: 10-Nov-2001

Standards Content (Sample)

NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Contact ASTM International (www.astm.org) for the latest information
An American National Standard
Designation: D 6616 – 01a
Standard Test Method for
Measuring Viscosity at High Shear Rate by Tapered Bearing
1
Simulator Viscometer At 100°C
This standard is issued under the fixed designation D 6616; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (e) indicates an editorial change since the last revision or reapproval.
1. Scope Rate and High Temperature by Tapered Bearing Simula-
3
tor
1.1 This test method covers the laboratory determination of
6 –1
the viscosity of engine oils at 100°C and 1·10 s using the
3. Terminology
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Tapered Bearing Simulator (TBS) viscometer.
3.1 Definitions:
NOTE 1—This test method is similar toTest Method D 4683 which uses
3.1.1 density—the mass per unit volume. In the SI, the unit
the same TBS viscometer to measure high shear viscosity at 150°C.
ofdensityisthekilogrampercubicmetre, butforpracticaluse,
1.2 The Newtonian calibration oils used to establish this test
a submultiple is more convenient. The gram per cubic centi-
3 3
method range from approximately 5 to 12 mPa·s (cP) at 100°C
metre is equivalent to 10 kg/m and is customarily used.
and either the manual or automated protocol was used by each
3.1.2 Newtonian oil or fluid—an oil or fluid that at a given
participant in developing the precision statement.The viscosity
temperature exhibits a constant viscosity at all shear rates or
range of the test method at this temperature is from 1 mPa·s
shear stresses.
(cP) to above 25 mPa·s (cP), depending on the model of TBS.
3.1.3 non-Newtonian oil or fluid—an oil or fluid that exhib-
1.3 The non-Newtonian reference oil used to establish the
its a viscosity that varies with changing shear stress or shear
6 –1
shear rate of 1·10 s for this test method has a viscosity of
rate.
approximately 10 mPa·s at 100°C.
3.1.4 shear rate—the velocity gradient in fluid flow. The SI
–1
1.4 Application to petroleum products other than engine oil
unit for shear rate is s .
has not been determined in preparing the viscometric informa-
3.1.5 shear stress—the motivating force per unit area for
tion for this test method.
fluid flow. The area is the area under shear.
1.5 This test method uses the milliPascal second (mPa·s) as
3.1.6 viscosity—the ratio between the applied shear stress
the unit of viscosity. This unit is equivalent to the centiPoise
and the rate of shear. It is sometimes called the coefficient of
(cP), which is shown in parentheses.
dynamic viscosity. This coefficient is a measure of the resis-
1.6 This standard does not purport to address all of the
tance to flow of the liquid. In the SI, the unit of viscosity is the
safety concerns, if any, associated with its use. It is the
Pascal·second; often the milliPascal·second or its equivalent
responsibility of the user of this standard to establish appro-
the centiPoise is found more convenient.
priate safety and health practices and to determine the
3.1.6.1 apparent viscosity—the viscosity of a non-
applicability of regulatory limitations prior to use.
Newtonian fluid at a given shear rate or shear stress determined
by this test method.
2. Referenced Documents
3.2 Definitions of Terms Specific to This Standard:
2
2.1 ASTM Standards:
3.2.1 idling oil —an oxidatively stable Newtonian oil in-
D 4683 Test Method for Measuring Viscosity at High Shear
jected into the operating viscometer stator when the instrument
is likely to be held for periods of time greater than 30 min and
up to two weeks at 100°C. Use of this oil prevents stator
1
This test method is under the jurisdiction of ASTM Committee D02 on
deposits from additives, which may decompose after longer
Petroleum Products and Lubricants and is the direct responsibility of Subcommittee
exposure times in the operating viscometer and permits con-
D02.07.0B on High Temperature Rheology of Non-Newtonian Fluids.
Current edition approved Nov. 10, 2001. Published February 2002. Originally tinuous operation of the viscometer without need to shut the
published as D 6616 – 01. Last previous edition D 6616 – 01.
instrument off.
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Available from Tannas Co., 4800 James Savage Rd., Midland, MI 48642. This
viscometer and associated equipment as listed in the research report was used to
develop the precision statement. To date, no other equipment has demonstrated,
through ASTM interlaboratory testing, the ability to meet the precision of this test.
3
This is not an endorsement or certification by ASTM. Annual Book of ASTM Standards, Vol 05.02.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
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D 6616
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3.2.2 Newtonian Reference Oil —a
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