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Mobile system for rotating machinery in operation -
LMS Test.Lab Operational Deflection Shape Analysis provides a mobile solution to measure and visualize the structural deformation of rotating machinery in operation. The animated vibration patterns can be analysed as time-history, at selected fixed frequencies or tracked against rotational speed or any other operational parameter. Measurements are made using a portable LMS SCADAS 305 front-end with 2 embedded tacho inputs, supporting 20 channels for ICP® and Voltage signals, including quasi-static parameters.

The user-intuitive Signature Testing workbook measures and processes tracked spectral data and enables repetitive measurements from a pre-defined template where layouts and measurement settings are specified. Narrow band spectra are acquired during run-ups, run-downs or sequences of both, at user-controlled time or rpm intervals. Online processing and visualization covers a multitude of formats, including waterfalls and order-, frequency- and octave sections. The time histories for all channels are directly written to the PC hard disk, in parallel to the online spectral processing, with a throughput performance independent of channel count, acquisition bandwidth and online processing.

The Geometry workbook allows generation of wire frame and 3D visualization of test and analysis results. All data types permit immediate analysis through animation of the geometry model: scrolling through the time axis like a slow motion camera, or along frequency, order or speed axes like a stroboscope. Any analysed vibration pattern can be stored for detail analysis or reporting purposes.

The Operational Deflection Shape Analysis workbook is available as a standalone analysis environment or as add-in to the data acquisition workbooks, allowing on-the-spot analysis.

Features & Benefits

• Mobile multi-channel acquisition

• On-line monitoring of spectra, waterfalls and colour maps, octave displays and order sections, and measurement status indicators

• Online check against reference curves

• Seamless test-analysis integration, add-in analysis tools at any point in the process

• "Movie" or "stroboscope" analysis for any operating condition

• Saves deformation patterns at critical operating conditions for later replay, analysis & reporting

• Effective & reliable field data acquisition

• On-line feedback on measurement progress and quality

• Reduced errors and higher productivity

• Visual diagnosis using 3D animation on various data formats & data segments

• Fast standard reporting, with "single button" operation

• Comprehensive reporting - easy exchange of test/analysis results between OEM departments and with suppliers