The latest LMS Test.Lab Revision 10 release not only offers significant improvements in productivity, efficiency and user-friendliness, it also introduces brand-new tools and applications, such as Time Domain Transfer Path Analysis (TPA) and MIMO FRF testing. LMS Test.Lab Revision 10 also integrates the latest, innovative solutions for acoustic testing – making LMS Test.Lab Revision 10 the most complete acoustic package on the market.
LMS Test.Lab Rev 10B has been released early July 2010. In addition to Rev10 enhancements, the latest revision features numerous improvements that helps LMS Test.Lab users be more efficient in their daily tasks:
- New mathematical functions can be added to the editing toolbar.
- Additional functions in the Time Signal Calculator to convert negative channel point directions, to perform non-linear calibration, to compute rpm/time and angle/time traces starting from tacho signals generated with optical measurements of zebra tape glued on a rotating axel and to align channels on the same grid using interpolation.
- Several improvements in the context of generic strain measurements, such as intelligent default settings and enhanced units support to simplify setup.
- In the LMS Test.Lab Sine Control workbook, the behavior of the peak estimator can now also be changed to track the absolute peak value as was already possible in LMS Test.Lab Online Sine Data Reduction.
- In Spectral Testing, we now allow parallel time recording during burst random excitation. Another extension is the gradual build up/down of continuous sources for smooth transition between on/off state.
- MIMO Sweep and Stepped Sine Testing has been extended with the possibility to make user defined layouts and populate the displays with online data.
- Signature Testing comes with several extensions, such as selectable bandwidth for static channels up to 1 kHz, support for high precision CAN signals using up to 1kHz sampling rates and zebra tape support with automatic butt-joint-correction for easy tacho acquisition. In standalone conditions, the SCADAS Recorder can now trigger measurements based on GPS velocity. Also, with 10B, the SCADAS Recorder can record files larger than 4GB on Compact Flash.
- It is now possible to measure Reverberation Time according to standards ISO3383 and ISO354.
- Time domain averaging has been added next to energetic averaging for Sound Intensity measurements to allow studying periodic signals immersed in background noise with increased dynamic range.
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LMS Test.Lab MIMO FRF TESTING
Multi-excitation testing made easy – from time history replay to multi-sine
The new LMS Test.Lab MIMO FRF Testing extends the modal testing techniques already available in LMS Test.Lab Spectral Testing and Source Control. With this new solution, users can specify their specific excitation signals, define a shaped amplitude spectrum and extend the application to multi-sine excitation.
Periodic random excitation can be used to obtain the best linear fit for a non-linear system. When real-life excitations are preferred, users can simply record the time data and import it into LMS Test.Lab MIMO FRF Testing for replay. Before data replay, the time data and corresponding power spectral density can be visualized. Scaling and fading functionalities are fully integrated as well.
- Define excitation spectra with shaped amplitude for random and multi-sine excitation
- Use periodic random excitation for best linear fit for non-linear systems
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Arbitrary source replay of several excitations in open
- Support of multiple sampling rate for acoustic signal and vibration signals
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LMS Test.Lab Ground Vibration Testing
LMS Test.Lab Ground Vibration Testing Rev 10A introduces a new coherence plotting functionality, delivering a direct efficiency benefit for time-consuming and mission critical GVT campaigns. Users can visualize averaged coherence values of selected frequency bands and easily identify weak coherence areas. Coherence plots are available on all structural testing acquisition modules for immediate measurement validation. 
- Reduces risk involved in GVT campaigns
- Shortens total test time
- Covers multiple excitation, modal validation and non-linear behavior assessment techniques
- Efficiently and reliably identifies all critical aircraft modes
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LMS Test.Lab Time Domain TPA
LMS Test.Lab Rev 10A delivers a brand-new extension to the renowned LMS Test.Lab Transfer Path Analysis capabilities: LMS Test.Lab Time Domain TPA. This new application complements frequency domain TPA and is the perfect solution for transient phenomena analysis. With this extension, LMS now offers a complete portfolio of TPA solutions for a broad spectrum of applications.
- Fully supports all force identification methods available in LMS Test.Lab TPA products
- Computed loads or contributions available for direct auralization or additional processing
- In combination with the component editing add-in, engineers can visualize and listen to the impact of proposed structural modifications
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LMS Test.Lab Sound Quality
The LMS Test.Lab Rev 10A Sound Quality solution has been extended with new psycho-acoustic metrics used in the automotive, aerospace, and white goods sectors. LMS Test.Lab Sound Quality also offers several applications for creating and customizing specific, in-house metrics.
LMS Test.Lab Sound Quality metrics:
- Psycho-acoustics metrics: loudness, time varying loudness and specific loudness, sharpness, roughness and fluctuation strength
- Metrics for detection and quantification of prominent tones like tonality, tone-to-noise ratio, prominence ratio
- Metrics for detection and quantification of modulated sounds using roughness and fluctuation strength
- Metrics for detection and quantification of impulsive sounds
- Speech-related metrics
In LMS Test.Lab Revision 10A, LMS Test.Lab Sound Intensity’s geometry module has been extended with a 3D acoustic mesh generator. The new intensity data sheet presents a clear overview of all measured and processed data, quality indicators and related components. User can easily analyze, browse and interpret data for sound power, source ranking and sound source localization.
- Basic and advanced user scenarios
- 3D-geometry driven intensity acquisition and analysis
- Comprehensive, complete and straightforward view of all test data and quality indicators
The LMS Test.Lab Rev 10A High Definition Acoustic Camera supports both real-time far field and real-time near field sound source localization. The camera’s array with wide angle lens provides sharp pictures even when taken close to the structure.
- Far field and high resolution near field sound source localization in one solution
- Fast and real-time sound source localization
- Applicable for stationary and transient applications
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For one-shot interior sound source localization with maximum accuracy, the new and motorized LMS Test. Lab 3D Acoustic Camera has a laser that automatically scans the geometry without operator intervention. During the scanning, pictures are taken to obtain a full 3D photorealistic image of the vehicle. With this solution, users can spot sources of interior noise problems with high precision and in record time.
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High measurement quality using real geometry
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Automatic 3D mesh generation of vehicle interior
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Clear result visualization with interior/exterior view
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High data quality in low, mid and high frequency ranges
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In Rev 10A, a new regulation for motorbikes (type L3) based on ISO362 has been added for both exterior and interior pass-by noise testing. As prescribed by the ISO standard, minimal one acceleration test and one constant speed test are required to complete the assessment.
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Compliance with latest ISO 362 standard for motorbikes
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Exterior and interior pass-by noise testing
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Extensive pass-by noise engineering capabilities
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