Description
With the Quality control test stand, it is possible to fully automatically determine the modal variables (natural frequencies and attenuation) of various technical components, detect deviating parts and mark/eject them. This test is particularly essential for the final inspection of aluminum components (cavities, coarse grain formation and geometric deviations), brake pads (form deviation and pad detachment) or brake discs (coating and cracks). When it comes to quality control in production, the modal sizes are features that can be quickly determined. MAUL-THEET offers a complete system that carries out these measurements fully automatically, evaluates them and, if necessary, marks or ejects the component if the components are different.
Advantages & Innovations
- Cost and time savings thanks to low personnel costs
- Automated test system for determining natural frequencies and damping
- 100% testing according to SAE J2598
- Fully automatic measurement with automatic evaluation
- User-friendly software
- Excitation by automatic modal hammer
- Very short cycle times
- Non-destructive testing
- Software guided measurement
- Vibration measurement with a microphone or laser Doppler vibrometer
- Frequency range up to 100kHz
- Frequency resolution < 1Hz to 20kHz
- Freely selectable dB values for the attenuation calculation
- Quality factor for damping value
- Automatic log generation
- SQL database or central database through LabLINK
- Data export via LabLINK, ASCII files
Application & Integration
- Quality control
- In-Line
- End-Of-Line
- Material testing
- Series testing of components
- Series testing of components
Components
Excitation unit
The broadband excitation is carried out with an automatic modal hammer
- Frequency ranges up to 40kHz
- Impact forces up to 2500N
- High reproducibility
Vibration sensor
The VQC can be operated with the following vibration sensors
- Microphone
- Laser Doppler vibrometer
Measurement data acquisition
4-channel measuring system with synchronous scanning
- AC, DC and IEPE coupling
- Anti-aliasing filter
- 24-bit resolution
- Frequency ranges 1 to 100kHz
- Frequency resolution 100 to 26500 FFT lines
Windows PC
- Standard or industrial PC, also according to customer requirements, with Windows 10/11
Software
The VQC software controls the entire testing process. It includes the automatic measurement of test items in the series, the analysis and communication with the production line control.
Specification of the test object
- Component identification via bar or QR code
- dB values for attenuation calculation (0.5 to 3dB)
- Frequency range 1 to 40kHz selectable
- Frequency resolution (number of FFT lines) selectable
- Frequency bands and permissible tolerance ranges
Measuring sequence in series
- Start of the measuring process after component positioning has been completed
- Averaging
- Determination of quality parameters (frequency, attenuation, etc.)
- Transmission of the quality decision to the manufacturing and production facility
Automatic measurement procedure
- Automatic component positioning
- Triggering the automatic modal hammer
- Measurement of impact force and vibration response
- FRF averaging
- Peak picking, attenuation calculation and quality assessment
- Control for component separation
Output of the test data
- SQL database connection according to customer specifications
- LabLINK database connection according to customer specifications
- SAP connection according to customer specifications
- Printer, PDF, Excel, CSV, etc.
What we can do for you
In addition to the production and delivery of standard measuring systems for determining natural frequency and damping, we design, plan and develop customer-specific measuring systems according to your requirements. We would be happy to carry out series of measurements for you in advance as a service. This is necessary due to our experience in planning and designing the QC system. Talk to us, we will be happy to make you an offer.