Test Site

Responsible: Dipl.-Ing. Marko Ebermann

Application:
Determination of static and dynamic bearing properties
Investigations on hydrodynamic journal bearings
Endurance tests (long-term behavior)
Loss power investigations (friction torque/friction coefficient)
Start-stop behavior
Tests in the mixed-friction regime
Determination of emergency running properties (crash behavior)

Technical data:
Load: radial, static, up to 50 kN
Inner bearing diameter: 110 mm
Drive: asynchronous machine with 110 kW and maximum speed of 3600 rpm

Equipment:
Rotating lubricant film pressure sensor (incremental encoder with 800 increments/360°)
Displacement sensors for eccentricity measurement in 2 planes
Type K and PT100 thermocouples for temperature measurement

Responsible: Dipl.-Ing. Marko Ebermann

Application:
Investigations on hydrodynamic journal bearings
Endurance tests (long-term behavior)
Loss power investigations (friction torque/friction coefficient)
Start-stop behavior
Tests in the mixed-friction regime
Determination of emergency running properties (crash behavior)

Technical data:
Load: radial, static, up to 50 kN
Inner bearing diameter: 30 mm
Drive: asynchronous machine with 11 kW and maximum speed of 3600 rpm
Transmission ratio: 0.13 or 7.5 via planetary gear set

Equipment:
Thermocouples (Type K, PT100) for temperature measurement (bearing shell and housing, oil sump and oil supply)
Torque measuring shaft for determination of loss torque

Document: Test rig description poster

Responsible: Dipl.-Ing. Björn Prase

Application:
Investigations on hydrodynamic journal bearings
High-speed tests
Loss power investigations (friction torque/friction coefficient)
Start-stop behavior
Tests in the fluid-friction regime

Technical data:
Load: radial, static, up to 30 kN
Inner bearing diameter: 30 mm
Drive: 35 kW at a maximum speed of 42,000 rpm

Equipment:
Thermocouples (Type K, PT100) for temperature measurement (bearing shell and housing, oil sump and oil supply)

Document: Test rig description poster

Responsible: Dr.-Ing. Jan Reißmann

Application:
Investigations on gearboxes (fatigue strength, efficiency, damage mechanisms)

Technical data:
Three-phase asynchronous machine (drive motor)
*Power 15 kW
*Torque 100 Nm
*Speed 1450 rpm
DC motor (output motor)
*Power 20.4 kW
*Torque 75 Nm
*Speed 2600 rpm
Bevel-helical gearbox
*Ratio up to 55
*Nominal speed 25 rpm
*Nominal torque up to 6412 Nm

Equipment:
Measuring shaft for torque up to 200 Nm and speed

Document: Test rig description poster

Responsible: Tobias Hentschel, M.Sc.

Application:
Strength investigations on shafts and shaft-hub connections (static, finite life, endurance, service life)
Tests to determine static slip torque of interference fits

Technical data:
Static torsional torque max ±8000 Nm
Dynamic torsional torque max ±6400 Nm
Frequency up to 30 Hz
Twist angle max ±50°

Equipment:
Various fixtures for clamping shafts and shaft-hub connections
Investigations under various environmental conditions possible
Custom fixture manufacturing for testing different components possible

Document: Test rig description poster

Responsible: Marius Müller, M.Sc.

Application:
Strength investigations on materials and components (static, finite life, endurance, service life)

Technical data:
Static axial force up to 100 kN
Dynamic axial force up to ±100 kN
Frequency up to 30 Hz
Stroke up to 100 mm

Equipment:
Control system for tracking tests
Various fixtures for strength testing and determination of friction characteristics on materials and components
Custom fixture manufacturing for testing different components
*Spur gears
*Shaft-hub connections
*4-point bending test
*3-point bending test
*Friction coefficient investigations
Custom fixture manufacturing for testing different components

Responsible: Benjamin Muhammedi, M.Sc.

Application:
Strength investigations on materials and components (static, finite life, endurance, service life)

Technical data:
Static axial force up to 250 kN
Dynamic axial force up to ±250 kN
Frequency up to 30 Hz
Stroke up to 100 mm

Equipment:
Various fixtures for strength investigations on materials and components
*Worm gears - center distance up to 100 mm
*Worm gears - center distance up to 250 mm
*Shaft-hub connections
*4-point bending test
*3-point bending test
Custom fixture manufacturing for testing different components

Responsible: Jonathan Schanner, M.Sc.

Application:
Determination of static friction coefficients and friction characteristics (quasi-static)
Investigation of friction and wear behavior under oscillating relative motion / fretting (dynamic)
Tribological evaluation of coatings, pastes and friction-enhancing measures

Technical data:
Torque ±50 Nm to 2500 Nm
Normal force up to 200 kN
Resulting interface pressure up to 400 MPa (standard specimen geometry)
Frequency up to 50 Hz
Twist angle up to 45°

Equipment:
Laser displacement measurement for dynamic investigations

Document: Test rig description poster

Responsible: Marius Müller, M.Sc.

Application:
Combined dynamic torsional loading with rotating bending loading
Strength investigations on materials and components (finite life, endurance, service life)
Force- and torque-controlled vibration fatigue investigations

Technical data:
Maximum torque Tmax = ±3500 Nm
Maximum bending moment (rotating) Mb,max = ±800 Nm
Load phase angle: φ = 0..360°
Maximum test frequency f = 15 Hz

Equipment:
Torque transducer: 3.5 kN
Nominal diameter of standard notch DN = 40 mm
Connection diameter at actuator Ø70h7 mm
Centering at connection flange Ø165h7 mm
Pitch circle diameter at connection flange Ø130 mm
Through holes on pitch circle (M12) 12xØ13 mm
Custom fixture manufacturing for testing different components

Document: Test rig description poster

Responsible: Dipl.-Ing. Marko Ebermann

Application:
Strength investigations on materials and components (finite life, endurance, service life)
Force-controlled vibration fatigue investigation

Technical data:
Axial force up to ±100 kN
Dynamic displacement 6 mm (±3 mm)
Operating frequency 40 to 220 Hz (in 8 steps)

Equipment:
Load cells: 20 kN and 100 kN
Various fixtures for clamping:
*Round specimens
*Flat specimens
*Bolts up to M10
*Connecting rods
Fixture for 4-point bending test
Custom fixture manufacturing for testing different components

Responsible: Dipl.-Ing. Denny Knabner

Application:
Determination of fretting fatigue strength on tensile specimens with pressed friction blocks
Investigation of the influence of slip and interface pressure on material strength

Technical data:
Static tensile force up to 100 kN
Dynamic tensile force up to ±100 kN
Frequency 40 to 100 Hz
Clamping force up to 5 kN (200 MPa)
Slip amplitude up to 50 µm
Flat specimen thickness up to 10 mm

Equipment:
Possibility of slip control independent of current interface pressure and tensile load
Laser extensometer for non-contact slip measurement
System for controlled oil supply (influence of environmental media)

Document: Test rig description poster

Responsible: Tobias Hentschel, M.Sc.

Application:
Dynamic strength investigations on material specimens
Application of a uniform bending moment over the entire specimen length by four-point rotating bending loading
Service-life investigations possible thanks to electromechanical linear drive

Technical data:
Nominal bending moment load up to 200 Nm
Frequency up to 10-100 Hz (600-6000 rpm)
Specimen lengths from 100-400 mm
Clamping range for material specimens with corresponding collets from Ø4 to Ø40 mm
Max. clamping diameter with component-specific fixture: Ø250 mm

Responsible: Patrick Schlapp, M.Sc.

Application:
Strength investigations on shafts and shaft-hub connections (finite life, endurance, service life)

Technical data:
Nominal diameter 40 mm
Dynamic bending moment 4000 Nm
Static torsion 4000 Nm
Frequency up to 20 Hz
Ratio of bending to torsion 0 to 1

Equipment:
Various fixtures for clamping shafts and shaft-hub connections

Document: Test rig description poster

Responsible: Patrick Schlapp, M.Sc.

Application:
Strength investigations on shafts and shaft-hub connections (finite life, endurance, service life)

Technical data:
Nominal diameter 50 mm
Dynamic bending moment 5000 Nm
Static torsion 5000 Nm
Frequency up to 20 Hz
Ratio of bending to torsion 0 to 1

Equipment:
Various fixtures for clamping shafts and shaft-hub connections
Investigations in various media at temperatures up to +80 °C possible

Document: Test rig description poster

Responsible: Patrick Schlapp, M.Sc.

Application:
Strength investigations on shafts and shaft-hub connections (finite life, endurance, service life)

Technical data:
Nominal diameter 60 mm
Dynamic bending moment 7000 Nm
Static torsion 7000 Nm
Frequency up to 15 Hz
Ratio of bending to torsion 0 to 1

Equipment:
Various fixtures for clamping shafts and shaft-hub connections

Document: Test rig description poster