TE 90 MULTI-STATION RECIPROCATING TRIBOMETER Introduction The TE 90 Multi-Station Reciprocating Tribometer is a modular machine providing features drawn from a range of established test machines including the TE 77 High Frequency Friction Machine, the TE 80 Fuel Lubricity Tester and the TE 57 Pressurized Lubricity Tester. Single station multi-function and multi-range test machines may be able to perform a wide variety of different tests, but they can still only perform one experiment at a time. Simpler multi-station test rigs can provide a means for increasing test capacity at a substantially lower cost per test station than the single station solution. The TE 90 is a two, four, eight or twelve
Transcript
TE 90 MULTI-STATION RECIPROCATING
TRIBOMETER
Introduction
The TE 90 Multi-Station Reciprocating Tribometer is a modular machine providing features
drawn from a range of established test machines including the TE 77 High Frequency Friction
Machine, the TE 80 Fuel Lubricity Tester and the TE 57 Pressurized Lubricity Tester.
Single station multi-function and multi-range test machines may be able to perform a wide
variety of different tests, but they can still only perform one experiment at a time. Simpler
multi-station test rigs can provide a means for increasing test capacity at a substantially lower
cost per test station than the single station solution. The TE 90 is a two, four, eight or twelve
station reciprocating tribometer with test stations configured to meet a range of standard
reciprocating test applications.
Reciprocating Drive Assembly
The reciprocating drive assembly incorporates a splined shaft and two eccentric cams, each
driving a scotch yoke assembly. The cams are arranged 180 degrees out of phase, so that
primary balancing of the reciprocating assembly is achieved. The assembly is a fixed stroke
device with the stroke length dependent on the eccentricity of the cams. Cams for strokes of up
to a maximum of 10 mm may be accommodated. Moving specimen carriers are attached to one
or both sides of each scotch yoke.
A single reciprocating assembly thus provides the basis for a two or four station test machine.
In order to create eight, twelve or indeed higher numbers of test stations reciprocating
assemblies may be attached together in series on a common splined shaft.
Test Assemblies
Four types of test assembly are currently available, each based on both existing tribometers
and existing test standards.
Four Station Non-instrumented Wear Head
Atmospheric Pressure – 1 mm Stroke
Based on: TE 80 Two Station Fuel Lubricity Wear Test Machine
Purpose:
To run tests under conditions specified in ASTM D 6079 Standard
Test Method for Evaluating Lubricity of Diesel Fuels by the High-
Frequency Reciprocating Rig.
To run tests under conditions specified in ISO 12156 Assessment
of Lubricity using the High Frequency Reciprocating Rig.
To run reciprocating wear tests with point contact at moderate
temperatures and light loads.
Note:
The TE 90 Fuel Lubricity Tester will run tests in accordance with
the test parameters specified in ISO 12156-1 and ASTM D6079
fuel lubricity test standards and will rank fluids in the same order,
but will consistently produce larger wear scars than the PCS HFRR
instrument and a wider discrimination between low and high
reference fuels.
The effect is particularly marked for the low lubricity reference
fluid. The bias in the results arises for two reasons, firstly from
differences in the method of loading between the two instruments
and secondly from the method of actuation. A full analysis of
these differences is given in Guidance on Diesel Fuel Lubricity
Based on: TE 57 Pressurized Lubricity Test Machine
Purpose:
To run tests under conditions specified in ASTM D 6079 Standard
Test Method for Evaluating Lubricity of Diesel Fuels by the High-
Frequency Reciprocating Rig (HFRR) under pressurized conditions.
To run reciprocating wear tests with point contact at moderate
temperatures and light loads under pressurized conditions.
Two/Four Station Instrumented Test Assembly – 10 mm
Stroke
Based on: TE 77 High Frequency Friction Machine
Purpose:
To run tests under conditions specified in ASTM G 133 Standard
Test Method for Linearly Reciprocating Ball on Flat Sliding Wear.
To run test under conditions specified in ASTM G181 Standard
Practice for Conducting Tests on Piston Ring and Cylinder Liner
Materials under Lubricated Conditions.
To run tests under conditions specified in Draft prEN1071-12
Methods of Test for Ceramic Coatings – Part 12 – Reciprocating
Wear Test.
To run standard reciprocating tests with point or line contact at
elevated temperatures and varying loads.
Four Station Instrumented Test Assembly – 2 mm Stroke
Based on: TE 77 High Frequency Friction Machine
Purpose:
To run tests under conditions specified in ASTM D 5706 Standard
Test Method for Determining Extreme Pressure Properties of
Lubricating Grease Using a High Frequency Linear-Oscillating Test
Machine
To run test under conditions specified in ASTM D 5707 Standard
Test Method for Measuring Friction and Wear Properties of
Lubricating Grease Using a High Frequency Linear-Oscillating Test
Machine
To run standard reciprocating tests with point contact at elevated
temperatures and varying loads.
Load Control Options – Instrumented Machines
MANUAL 1-2:
One regulator and one load force transducer for master test station:
Manual control of master test station load by precision regulator, with resulting master test
station load measured by force transducer. Slave test station cylinder connected in parallel to
master test station with no slave test station load measurement.
MANUAL 2-2:
Two regulators and two load force transducers, one per test stations:
Manual control of both test station loads by independent precision regulators, with resulting test
station loads measured by force transducers.
SERVO 1-2:
One servo valve and one load force transducer for master test station:
Automatic control of master test station load by servo valve with force transducer feedback.
Slave test station cylinder connected in parallel to master test station with no slave test station
load measurement.
SERVO 2-2:
Two servo valves and two load force transducers, one per test station:
Automatic control of both test station loads by independent servo valves, each with force
transducer feedback.
MANUAL 1/4:
One regulator and one load force transducer for master test station:
Manual control of master test station load by precision regulator, with resulting master test
station load measured by force transducer. Slave test station cylinder connected in parallel to
master test station with no slave test station load measurement.
MANUAL 4/4:
Four regulators and four load force transducers, one per test stations:
Manual control of test station loads by independent precision regulators, with resulting test
station loads measured by force transducers.
SERVO 1/4:
One servo valve and one load force transducer for master test station:
Automatic control of master test station load by servo valve with force transducer feedback.
Slave test station cylinders connected in parallel to master test station with no slave test station
load measurement.
SERVO 4/4:
Four servo valves and four load force transducers, one per test station:
Automatic control of test station loads by independent servo valves, each with force transducer
feedback.
TE 90 MULTI-STATION RECIPROCATING TRIBOMETER
Technical Specifications
Four Station Non-instrumented Wear HeadAtmospheric Pressure – 1 mm Stroke
Load: Dead WeightLoad Measurement: Not availableFriction Force: Not availableContact Potential: Not availableLoad: 2 to 10 NStroke: 1 mmMaximum Frequency: 50 HzTemperature: Ambient to 100°CTest Samples: 6 mm diameter ball (point contact)Instrumentation: Speed Indicator
Batch CounterTemperature Controllers x 4
Two Station Non-instrumented Wear HeadPressurized – 1 mm Stroke
Load: Dead WeightLoad Measurement: Not availableFriction Force: Not availableContact Potential: Not availablePressure: 7 bar maximumLoad: 2 NStroke: 1 mmMaximum Frequency: 50 HzTemperature: Ambient to 100°CTest Samples: 6 mm diameter ball (point contact)Instrumentation: Speed Indicator
Batch CounterTemperature Controllers x 2
Note: Pressurized fluid supply system not included.
Two/Four Station Instrumented Assembly – 10 mm Stroke
Number of Stations: 2 or 4Load: Pneumatic CylinderLoad Measurement: Force TransducerFriction Force (rms): Piezo Force Transducer (Optional)Contact Potential: Lunn-Furey CircuitLoad: 25 to 500 NStroke: 10 mmMaximum Frequency: 25 HzTemperature: Ambient to 250°CTest Samples: 6 mm diameter ball
4.76 mm diameter ball6 mm x 16 mm cylinderRing on liner samples
Instrumentation: SUPERSLIM x 1/2 (two/four station)Software: COMPEND 2000
Two/Four Station Instrumented Assembly – 2 mm Stroke
Number of Stations: 2 or 4Load: Pneumatic CylinderLoad Measurement: Force TransducerFriction Force (rms): Piezo Force Transducer (Optional)Contact Potential: Lunn-Furey CircuitLoad: 25 to 1000 NStroke: 2 mmMaximum Frequency: 50 HzTemperature: Ambient to 250°CTest Samples: 10 mm diameter ball on discInstrumentation: SUPERSLIM x 1/2 (two/four station)Software: COMPEND 2000
ServicesElectricity: 220/240V, single phase, 50 Hz, 3 kW
110/120 V, single phase, 60 Hz, 3 kWClean, dry air: 4 cfm at 8 bar (120 psi) (instrumented assemblies only)
