Our Test Bay

The best example for a successful reduction from scientific theory to practical application is our test bay shared by the Chair of Machine Parts and Materials Handling and the Research Group for Off-Road Machines. Besides some test benches which were especially developed for substantiated validation of theoretical basic approaches in the field of fundamental research, the institute also has numerous devices for standard tests, which are shown in this flyer. Furthermore, an adaptation, extension or new development of test benches is also made possible in a framework of cooperation. The test bay covers the main research areas like service strength, wheel-rail-systems, tribological mechanical systems as well as vibro acoustics. Our test stands are all equipped with computer aided measured value acquisition combined with automated post test evaluation. Their task orientated adaptation combined with our experience in the field of test planning ensures an efficient workflow. Highly qualified technicians also guarantee an ideal testing support. Furthermore LMF and BMT feature a variety of sensors for measuring acceleration, displacement, force, stress, torque, pressure, acoustic pressure and acoustic intensity. This site gives you a short overview of the testing stands and the measurement equipment at LMF and BMT. Further this information can also to be found in the accordant flyer. For download, click below:

Download information about our labs & facilities

Vibro-Acoustics

Tribo-mechanical systems

Acoustic System Identification Acoustic and vibration measurement of machines and equipment according to DIN 45 635 Measurements determination of sound power levels of machines and equipment by means of sound pressure and sound intensity measurements detection of sound sources using surface-scanningmeasurements of sound pressure and intensity vibration measurements using accelerometers test stand for experimental modal analysis extensive stationary and mobile instrumentation and computer technology to be used for various noise and vibration measurements on-site measurements with specially equipped measurement car Applicable in... ...Laboratory Environment absorbing acoustics laboratory with a capacity of 135 m³ and removable ceiling; connection capabilities for hydraulic and electric devices ...Open-Air Test Sites measurement of exterior noise in order to identify and characterize (single or multiple) sound sources measurement of interior noise (e.g. vehicle cabins) in order to determine the characteristics of the sound field

Testing Facility for Assemblies and Components Hydraulic test stand for investigation of wear in spherical plain bearings Essential Attributes installation of arbitrary commercial spherical plain bearings (di = 35 mm) Characteristical Data possible loads: static 78 kN, alternatively tumescent loads maximal pivoting angle: ±12.5° with construction limitation of ±15° max. sliding velocity: 20.5 mm/s (saw tooth) pivoting frequency: 1 Hz, intermittent operation possible Tribological Pairing Test Rig Electromechanic tribological pairing test stand for investigations on friction coefficient und wear Essential Attributes useable for basic tests on tribological pairings nearly sinusoidal oscillating sliding movement measuring of friction coefficient and wear while running Characteristical Data adjustable normal force: 0 ... 50 kN frequency of sliding movement: 0 ... 1 Hz amplitude of sliding movement: 0 ... 50 mm average sliding velocity: 0 ... 200 mm/s

Wheel-Rail

Service strength

Wheel–Rail–Testing-Sets Testing stands for working life tests and measurement of the abrasions of metallic or plastic wheels Essential Attributes possibility to generate driving power to the wheels -> tangential slippage adjustable skewing angle -> axial slippage Characteristical Data diameter of the drum: 2000 mm maximum contact force of the wheel: 150 kN maximum speed: 10 m/s nominal strength of rail: 690 N/mm² & 880 N/mm² Roll Testing Stand Testing Stand for working life and tribology tests on wheel-rail and roller-chain systems Essential Attributes the wheels and rollers are fixed as pairs, the girder of rail resp. chain is hydraulic moved simple adaptation of different rollers respectively wheels and girders of wheel and chain with individual fitting parts. Characteristical data rollers respectively wheels may be compressed as pairs up to 500 kN maximum move distance for each direction : 1000 mm maximum moving speed about 0,5 m/s, i.e. one double stroke lasts about 4 seconds.

Multiaxial Test Stand for Torsion and Bending Test stand for experimental assessment of service life of test specimens under simultaneously acting dynamic rotational bending loads and torsion Main Features arbitrary characteristics of rotational bending and torsional moments (amplitude, mean value, frequency) Achievable Loads and Frequencies each servo cylinder 6 kN static; ± 4 kN dynamic at 10 Hz stat. bending moment 1200 Nm; dynamic ± 800 Nm stat. torsional moment 1500 Nm, dynamic ± 1000 Nm each servo cylinder has up to ± 5 mm of amplitude Dynamic Test Stand for Wire Ropes Test stand for static and dynamic tensile tests of wire ropes and rope connectors Main Features static and dynamic tensile tests of wire ropes and rope connectors static and dynamic tensile tests of chains and other machine parts Characteristical Data maximum static tensile force: 1000 kN maximum dynamic tensile force: 600 kN maximum test frequency: 4 Hz maximum length of test specimen: 3100 mm