Brake pads are of central importance in the development and production of brake systems. The dynamic properties of the brake pads are essential characteristics for simulating the brakes during the development process or for quality control in production. The measurement of the dynamic properties (including modal values) of brake pads is described in SAEJ2598. MAUL-THEET offers a complete system that automatically carries out, evaluates and documents these measurements in accordance with SAEJ2598. With the MAUL-THEET test bench it is also possible to determine the dynamic properties (natural frequencies and damping) of other technical components.
Damping Values of brake parts following SAE J2598.
Frequency Range better than standard requirement (500Hz to 16 kHz)
Frequency Resolution < 1 Hz at 20 kHz
Calculation of Damping or Loss Factor according to SAE J2598
Selectable dB Values for Damping Estimation for each Natural Frequency
Quality Sentencing based on Frequency Tolerances
Temperature Measurement with optional Frequency Correction
The broad band excitation is done with an Automatic Impact Hammer:
Frequency Range 0.3 to 40 kHz
Impact Force up to 200N peak
The following sensors can be used with the VTS:
Laser Doppler Vibrometer
4 Channel DAQ synchronous sampling:
Frequency Ranges 1 kHz to 40 kHz
Frequency Resolution100 to 26500 FFT Lines
AC, DC and IEPE Coupling
All in One PC with Windows 10:
8 GB RAM
256 GB SSD
The vDamp software handles the complete test procedure. It covers user management, parts and work order handling, measurements, analysis, documentation and reporting.
Name and Meta data
Frequency range 1 kHz - 20 kHz selectable
Frequency Resolution (No of FFT lines) selectable
Frequency bands, Frequency Tolerances
dB Values for Damping Calculation (0.5 to 3dB)
Triggering of Automatic Impact Hammer
Measurement of Excitation Force and Vibration Response
Averaging and Analysis
Peak Picking, Damping Calculation and Sentencing
Printer, PDF, Excel, CSV, etc.