Beschreibung
Vorteile und Besonderheiten
Hauptmerkmale
Typische Anwendungen
Komponenten und Aufbau
Messverfahren und -ablauf
Software und Bedienung
Ergebnisse, Datenformate und Schnittstellen
Normen und Richtlinien
FAQ
Description
In the development and production of braking systems, damping layers—so-called shims—are applied to brake pad backing plates to suppress brake squeal. To compare the effect of different shims, samples are measured according to in-house specifications. These requirements are typically based on determining modal damping as a function of natural frequency and temperature.
MAUL-THEET offers the DTS, a system that automates time-consuming measurements and thus delivers reproducible results efficiently.
Standards and guidelines
With the DTS, measurements can be carried out according to the following standards and guidelines
The measurement results are compiled into a report automatically or, if preferred, with a single button press.
Advantages & Innovations
- Temperature-triggered excitation by automatic modal hammer
- High reproducibility
- Bounce-free excitation
- Non-destructive testing (NDT)
- Temperature range -60°C to 200°C
- Continuous, non-contact temperature detection
- Damping map over frequency and temperature
- Different attenuation calculation (half-width, x-dB, SDOF)
- Vibration measurement with a laser Doppler vibrometer or accelerometer
- Shim test according to SAE J3001
- Automated testing system
- Cost and time savings thanks to low personnel requirements
- Results database including meta data
- DAkkS calibration (DIN EN ISO/IEC 17025) possible
Application & Integration
- Damping determination
- Testing of brake components according to SAE J3001
- Quality control
- Natural frequency measurement
- Material testing
- Structural dynamics
- Prototype study
- Research and development
Components
Excitation unit
The broadband excitation is carried out with an automatic modal hammer
- Frequency ranges up to 60kHz
- Impact forces up to 2500N
- High reproducibility
Vibration/temperature sensor
The DTS can be operated with the following sensor types
- Laser Doppler vibrometer
- Accelerometer
- Infrared temperature sensors
Measurement data acquisition
4-channel measuring system with synchronous scanning
- AC, DC and IEPE coupling
- Anti-aliasing filter
- 24-bit resolution
- Measurement range up to 100kHz
- 100 to 25,600 FFT lines
Windows PC
- Standard or industrial PC, also according to customer requirements, with Windows 10/11
Software
The DTS software controls the entire testing process. It includes the identification of test objects, the measurement process flow, measurements, analyses and evaluations, as well as documentation and report generation.
Specification of the measuring device
- Name and meta data
- dB values for attenuation calculation (0.5 to 3dB)
- Selectable frequency range
- Frequency resolution (number of FFT lines) selectable
- Temperature-dependent frequency bands for frequency determination (peak picking)
- Different methods for determining attenuation (x-dB, SDOF, curve-fit)
Measuring sequence according to regulations (SAE J3001)
- Any order of measuring 5 material samples
- Calculation of the damping average values according to specifications
- Report creation with flexible representation of the attenuation values depending on frequency and temperature
Automatic measurement procedure
- Triggering the automatic modal hammer for selected temperatures
- Measurement of the excitation force and the vibration response
- FRF averaging
- Peak picking, attenuation calculation and graphical display of results
Report creation and output of results for each job as a table
- Printer, PDF, Excel, CSV, etc.
What we can do for you
In addition to manufacturing and supplying standard measurement systems for temperature- and frequency-dependent attenuation determination on shim probes, we design, plan and develop customized solutions tailored to your requirements. We are also happy to perform the measurements for you as a service.
Please contact us—we will be happy to provide you with a quote.
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