Description
The AMA is a highly developed system for the fully automated execution of experimental modal analyses. It combines state-of-the-art measurement technology with intelligent automation and enables the continuous, unattended acquisition of dynamic structural data across a large number of measurement points.
At the heart of the test stand is our ScanSet, a precise opto-mechanical system for the automated guidance of laser beams. An integrated camera captures the test object and transmits the image to the testing software. Within the software, the measurement points can be intuitively defined directly on the camera image using drag and drop. The ScanSet then automatically aligns its mirrors so that the laser beam from a connected laser Doppler vibrometer hits the defined coordinates with pinpoint accuracy.
Throughout the entire measurement process, our automatic vImpact modal hammer ensures reproducible excitation of the test object. The vibration spectra of the individual measurement points are automatically transmitted to the testing software, which calculates the modal parameters – natural frequencies, damping values, and mode shapes.
Once set up, the system works independently, without further supervision. Automated modal analysis thus represents an innovative solution for modern vibration analysis – ideal for research, development and quality assurance, where efficiency, accuracy and automation are crucial.
Standards and guidelines
With the AMA, 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
- High measurement quality
- Reproducible excitation with automatic modal hammer
- Large number of degrees of freedom
- High measurement point density for detailed modal analyses of complex structures
- Short measuring times
- Cost and time savings thanks to low personnel costs
- Fully automated measurement processes
- Non-contact measurement
- Automatic point assignment via camera-based object detection
- Flexible measurement point definition via “drag & drop” in software interface
- Integrated data analysis and visualization
- DAkkS calibration (DIN EN ISO/IEC 17025) possible
Application & Integration
- Experimental modal analysis
- Determination of eigenvalues
- Determination of resonances
- Operating vibration modes
- Lightweight construction and NVH optimization
- Testing of brake components according to VDA 301
- Model updating
- Structural modification
- Sensitivity analysis
- Structural dynamics
- Component tests
- Prototype study
- Condition analysis
- Product testing
- Material testing
Components
Excitation unit
Broadband excitation is achieved with an automatic modal hammer (vImpact of the 60/2000 series)
- Frequency ranges up to 60kHz/6kHz
- Impact forces up to 150N/2500N
- High reproducibility
Vibration sensor
The AMA is operated with the following vibration sensors
- 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 AMA software controls the entire measurement process to perform an automatic, experimental modal analysis.
Specification of the measuring equipment
- Frequency range 1kHz to 2MHz available
- Frequency resolution (number of FFT lines) selectable
- Graphically image-supported definition of the measuring points
- Automatic measuring process (scanning of the measuring points)
- 3D animation of the natural and operational vibration shapes
Measurements for a test object
- Measurements on a component with different numbers of measuring points
- Measurements on a component with different measurement settings (frequency range, FFT lines, number of averaging, excitation signals, etc.)
Automatic measurement procedure
- Triggering the automatic modal hammer
- Measurement of the excitation force and the vibration response
- Averaging and analysis
- Natural frequencies, natural shapes/operating vibration shapes and damping
Report creation and output of results for each job as a table
- Printer, PDF, Excel, CSV, AVI etc.
What we can do for you
In addition to manufacturing and supplying standard measurement systems for experimental modal analysis, 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 make you an offer.
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