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Special report LMS Testing SolutionsLMS Soundbrush can be used for acoustic troubleshooting, includingsource localization, leak detection and sound propagation. Its 3Dpositioning technology provides new insights into acousticphenomena and the sound flow around a device under test. Theintuitive user interface and fast setup significantly reducesmeasurement time compared to other acoustic measurementtechniques, such as traditional intensity probes or acoustic arraymeasurements.“LMS Soundbrush is an exceptionally userfriendly tool that allows even inexperiencedusers to identify sound sources quickly.”The tightly-woven relationshipbetween acoustics, comfort andsustainability has become increasinglyevident in recent years. Whetherconsumers buy a car, a householdappliance, a laptop or a drill, theproduct’s noise level may influencetheir purchasing decision and willdefinitely impact client satisfaction.This trend, together with the growingawareness about noise pollution andregulatory pressures, has madeacoustic performance a keycompetitive factor in productdevelopment. To support acousticengineers in their increasinglychallenging task, Siemens PLMSoftware developed LMS Soundbrush,the first technology to enable you tovisualize sound in 3D while measuring.Different measurements, varyingtechniquesAnalyzing and improving acousticperformance requires different typesof measurements. Engineers will, forexample, scan the surface of ahydraulic pump to investigate whatfactors contribute to the noise itemits. Leak detection is aboutinvestigating the ability of a casing orhousing to shield noise sourceswithin or outside the unit. To lookinto sound propagation, engineershave to determine how sound sourcesinteract and propagate away from thesource.LMS Soundbrush enables users to visualize sound fields even in complex 3Dvolumes such as car interiors. Engineers used LMS Soundbrush to localize vehicleacoustic leaks both inside and outside on all sides of a car with a detachable roof.While measuring the exterior sound sources, the testers played a pink noise signalinside the car. At the right side of the car, LMS Soundbrush revealed that the soundintensity was highest where the isolation is lowest, i.e. the rear and front wheelbays and the back canvas of the detachable roof. Brushing at the back and top ofthe car confirmed this finding: the sound insulation of the canvas appears to be theleast efficient in blocking the transfer noise.11

LMS Testing Solutions Special reportMeasuring transmission loss on an automotive car door.The range of techniques used for thesemeasurements is just as diverse as themeasurements themselves. A simplemicrophone can help identify criticalpeaks or frequency ranges. To gain deepinsight into the location of sound sources,engineers will rely on more advancedtechniques such as sound intensityVisualize sound source in 3D whilemeasuringThe methods described above areaccurate and efficient, yet they requiresignificant setup time, acousticalexpertise and expensive equipment.A new generation of acoustictroubleshooting tools, such as“This easy, real-time visualization allows animmediate and quick interpretation of themeasurement data, thus enabling efficientacoustic troubleshooting.”probes, which are often combined withscanning techniques that use wireframegrids or even robots. Finally, arraytechniques based on beam forming oracoustic holography methods will helplocalize sources by back propagation ontoa surface.12LMS Soundbrush, is different.LMS Soundbrush is an exceptionallyuser-friendly tool that allows even lessexperienced users to identify soundsources quickly. The setup is simple:click the antenna with an acoustic sensoronto the probe, plug the USB probe andcamera into the PC and launch theintuitive software. In no time, users canstart moving the probe around the testobject to capture acoustic measurementsand visualize all sound sources in 3D.

In the following example, LMS Soundbrush is used to find weak spots(acoustic leaks) in a door trim panel. For the test, a complete car doorwas mounted in a window between two test chambers. Using white noiseexcitation in the reverberant source room, the transmitted noise at thereceiving side of the door was measured, once with and once withoutthe side panel. The comparison yielded some surprising results. Whilethe speaker area and the window were clearly the main sources of noisefor the original door, the measurements indicated that the windowtransmitted more noise after removing the panels. The 3D visualizationrevealed the reason: by removing the door panel, an extra gap is createdin front of the window. This causes a high-vertical component of the noise,which reflects against the window, showing up as if the window weretransmitting more noise. Without the 3D vector visualization, these effectscould not have been discovered and explained.How it worksThe 3D visualization makes LMS Soundbrush a uniqueproduct. At the heart of the solution is the patented opticalposition tracking technology, which is integrated into theprobe and combined with either a sound pressuremicrophone or a 3D sound intensity sensor (antenna). Theantenna contains measurement sensors and embeddedmemory for automatic configuration and calibration. Theprobe has an illuminated 45-millimeter (mm) diametersphere that is continuously tracked by a camera, thusproviding the probe’s positions. Inside, inertial sensors areused to continuously measure its orientation around threeaxes. Together with the positions measured by the cameraand the offset of the antenna sensors stored in theembedded memory, this allows the software to representin real time the acoustic signals at the sensor location interms of both position and orientation.Quick interpretation of the dataThe acoustic measurement data is immediately shown in3D on the computer screen while “brushing” the soundfield. Sound pressure is displayed as point clouds, whileacoustic intensity is visualized as intensity vector plots. Allresulting data can be viewed from any possible angle.Users can freely rotate the test object and zoom in on aspecific hot spot or run a section plane through themeasurement data to make an interpolated contour plot.This easy, real-time visualization allows an immediate andquick interpretation of the measurement data, thusenabling efficient acoustic troubleshooting.13

LMS Testing Solutions Special reportMaximizeyour testingproductivityUse enhanced LMS durability testing solutionsfor road-load data acquisition and processingThe Hilti DSH 900 hand-held gas saw blade with sensors for impact hammerfrequency response function measurements.14

Special report LMS Testing SolutionsJust how long will it last? Whether you designtrucks, sports cars or electric vehicles, this isan important question for any brand. Withquality being such a major factor for consumersthese days, durability engineering has taken afront row seat, answering questions such as:just how much can a vehicle handle? Is thevehicle designed to go the distance?A critical factor in successfuldurability engineering is gaining aprecise understanding of the loadthat a product will undergo during itsanticipated lifetime. However,conducting accurate data acquisitionand processing can be challengingand time consuming.Siemens PLM Software’s LMS testingsolutions have enhanced itsdurability-testing product line withseveral new solutions for road-loaddata acquisition (RLDA) andprocessing. Its unmatched durabilityengineering expertise is reflected inan integrated, end-to-end solutionfor RLDA. From a single softwareplatform, you have completecontrol of the full RLDA process.LMS Test.Lab Durability Acquisitionsoftware combines universal,multi-channel data acquisitionwith a full suite of channel setup,measurement, validation, reportingand data-sharing tools.Built around three basic steps (setup channels, measure and validate and report and share), theLMS Test.Lab Durability Acquisition user interface (UI) will guide you through the durabilityacquisition process from start to finish. In addition to the interface, tables, graphs and views can befully customized to meet your personal requirements.15

LMS Testing Solutions Special reportAn end-to-end solution for RLDALMS Test.Lab Durability Acquisition isan integrated, end-to-end solution forroad load data acquisition. From asingle software platform, you havecomplete control of the full load dataacquisition process. The applicationcombines universal, multi-channeldata acquisition with a full suite ofchannel setup, measurement,validation, reporting and data-sharingtools. Seamless integration with theLMS SCADAS data acquisitionhardware allows you to completedurability acquisition processes moreconfidently and in less time with fewererrors.These dedicated solutions and services are already helping durability testing engineers around theworld to beat ever stricter deadlines and manage the ever-increasing data volumes to developdurable, high-quality products.With its unique workflow-basedinterface, LMS Test.Lab DurabilityAcquisition sets new standards forease of use, productivity and dataconsistency. The software naturallyfollows the test-campaign process inthree basic steps: set up channels,measure and validate and report andshare. LMS Test.Lab DurabilityAcquisition is designed to make testingmore efficient and more convenient.It is the ideal tool for future-focused,durability-testing departments,offering the right balance betweenease of use and functional flexibility.LMS Smart Control for instant datavalidationRLDA becomes a one-man operationwith the LMS Smart Controlapplication that runs on a seven-inchtouchscreen tablet. It’s compact andparticularly suited for use underchallenging conditions. Set up tests,monitor in real time, and validatemeasurements on the spot, avoidinglengthy test reruns.The LMS Smart Control seven-inch Android tablet and application prevents errors and annoying testreruns. With LMS Smart Control, users can instantly validate recorded data quality during and aftereach measurement right on-site. On-the-spot, trackside-data validation guarantees high-qualitydata and eliminates the need for costly test campaign reruns.16

Special report LMS Testing SolutionsMeasure more with the LMS SCADASdata acquisition modulesLMS SCADAS Recorder hardware offersmaximum measurement power in asingle, rugged box. It enables you toperform virtually any load-datameasurement imaginable. With theaddition of two new durability dataacquisition modules, it is possible tocapture synchronized video signalsand expand your measurements withIP67-compliant temperatureacquisition.Process more data faster with thelatest LMS Tecware releaseWith its latest release, LMS Tecwaresoftware continues to support testengineers in the consolidation andanalysis of gigabytes (GB) of raw datafrom mobile acquisition campaigns.New drivers add support for the HBMSoMat, HBM catman, imc Famos,MTS RPC3 float and MOOG formats,enabling direct access to raw datafiles and avoiding data conversionand data duplication. LMS TecwareLayoutBuilder software, a dedicatedenvironment for creating customreports, facilitates sharing anddocumenting critical test results.New LMS SCADAShardware modulesLMS SCADAS Recorder hardware offersmaximum measurement power in a single,rugged box. It enables durability engineers toperform virtually any load data measurementimaginable. With the addition of two new LMSSCADAS modules, it is now possible to capturesynchronized video signals and expandmeasurements with IP67-complianttemperature acquisition.A dual-channel digital interface module enablesusers to document lengthy public-roadmeasurements by capturing a synchronizedvideo data stream in parallel with dynamic,GPS, vehicle bus and wheel-force data.Test setups requiring more than 16 temperaturechannels enable you to rely on a new modulefor IP67-compliant type K thermocouple dataacquisition. The hardware is designed towithstand extreme environmental conditions.Its galvanic isolation and screwless mountingmake this module particularly well suited forengine-compartment applications.The new, innovative features of theLMS Durability Testing solution allowyou to maximize testing productivityon all levels. You will be able toacquire data faster, benefit from moremeasurement flexibility and executetest campaigns with completeconfidence. In other words, you can beconfident that your RLDA test expertisecontributed to the creation of a longlasting, quality product.17

LMS Testing Solutions Special reportAn unrivaled suite oftest-based engineeringsolutionsFaster, more complete and deeper engineering insightsThe newly released LMS Test.Lab 14 adds to the renownedreputation of its predecessors with an even morecomplete and faster approach to test-based engineeringsolutions.From multi-channel data acquisitionto a full suite of testing, analysis andreporting solutions, LMS Test.Lab14provides you with a versatile andrigorous problem-solving toolkit. Awide range of updates enables moretargeted engineering insights andhigher-detailed problem analysis.Real-time data monitoring speeds upthe overall testing process and givesyou a clear, on-the-spot picture ofyour test data.Empowering test-basedengineeringLMS Test.Lab offers the right balancebetween ease of use and functionalflexibility.The extended functionalities of thenewly released LMS Test.Lab 14 addto these benefits with even faster,more complete and deeperengineering insights.Acoustic testingAcoustic engineering teams willappreciate key innovations such asmore advanced PBN engineeringsolutions and a new transfer pathanalysis (TPA) workbook. Specifically,the extended pass-by noise18certification offers an answer to evermore stringent standards andregulations, while enhanced transferpath analysis capabilities addaccurate source-contributionquantification to the PBN tests.With various other acoustic testingimprovements, including the soundsource localization, sound qualityand sound transmission lossextensions, LMS Test.Lab Rev 14helps deliver more detailed insightsand greatly enhances overall acoustictesting efficiency. Other additions toacoustic testing include support forthe new LMS 3D Binaural headset,additional standards for sharpnesscalculation and enhanced insightswith the LMS Sound Intensitysolution.Structural dynamics testingWith its enhanced functionalities,LMS Test.Lab Structures softwareoffers test engineers more flexibilityin analyzing complex structures.While the support of the newLMS SCADAS V24 module directlyconnecting to triaxial accelerometersallows you to measure more signalsin one cycle, improved interaction withgraphical models lets you analyze testresults data in greater detail.Other highlights in structural dynamicstesting include faster channel setups,synchronization of multiple geometrydisplay formats and extendedLMS Ground Vibration Test (GVT)and flight flutter solutions.A new extension for rotatingmachinery testing introduces onlineangle domain testing based on realtime torsional vibration analysis.Dynamic environmental testingGaussian random test signals aren’talways enough to simulate a full reallife operational environment. Failureto incorporate specific environmentalconditions into a testing cycle can leadto costly product failures and warrantycosts.LMS Test.Lab 14 introduces the optionLMS Test.Lab Kurtosis Control softwareto the LMS Test.Lab Random ControlWorkbook software. This extensionenables you to generate non-Gaussiansignals with a preset Power Spectral

Special report LMS Testing SolutionsSound Source Localization (SSL) ‒ side-by-side comparison of SSL resultsfor different designs and frequencies speed up analysis and reporting.Density (PSD) and a user-definedKurtosis value. Non-Gaussianexcitations result in a more realisticrepresentation of operationalconditions by submitting the test itemto the higher-range accelerations morefrequently during a single test cycle.Pass-by-noise testing ‒ a clear run overview for validation is available atany moment.Data managementLMS Test.Lab Data Management hasbeen extended to manage and searchproject collateral documents moreefficiently, while LMS Test.Lab Desktophas new data comparison capabilities.LMS Test.Lab Durability AcquisitionAnd, finally, LMS Test.Lab DurabilityAcquisition now features a new,integrated end-to-end solution forRLDA. The solution covers every stepof the test campaign process in acoherent workflow: from channelsetup through pre-instrumentationchecks, real-time measurements andquick data validation before uploadingto a server. It also provides seamlessreport sharing. This comprehensiveapproach ensures efficient, fast andseamless distribution of realistic loadsto both simulation and testing teams.Kurtosis Control ‒ enable to reproduce the desired PSD target withGuassian or Non-Gaussian signals.Data management ‒ compare data more easily with coupled cursors.19

LMS Testing Solutions Special reportYour one-stop shop forpass-by noise testingThe LMS testing solutions portfolio hasadded new hardware components to itsPBN testing and engineering solution.A one-stop shop for every PBN testing orengineering scenario, you will have all thenecessary hardware and software forexterior and interior testing and analysis,calibration and maintenance right at yourfingertips.Complete hardware solutionBy expanding the PBN hardware portfolio, engineers canbenefit from a complete set of sensors: speed radar or GPSspeed sensor for vehicle speed, track-based light barriersfor position, optical revolutions per minute (RPM) andkickdown sensors, a weather station for ambientconditions and wired or wireless microphones to capturenoise levels. All these sensors are conditioned withdedicated pass-by noise conditioning modules within theLMS SCADAS Mobile family.The centerpiece of the solution is the LMS Pass-by NoiseConditioner module, a dedicated two-slot moduledesigned for the LMS SCADAS MobileTM hardwarerenowned for its state-of-the-art integrated signalconditioning resulting in strong data quality. This module20

Special report LMS Testing Solutionsdirectly conditions the inputs of the above sensors anddelivers conditioned outputs for all sensors. Telemetry isused to synchronize all sensors on both the track and thevehicle side. Standalone wireless microphone unitsprovide a high-speed data link with the moving vehicle.All types of configurationsThe LMS Pass-by Noise hardware portfolio is suitable fortesting on different standard configuration types.Supported configurations are track-only (testing withoutin-vehicle instrumentation; it is not appropriate forcertification, but it is suitable for quick troubleshooting),track-based (PBN homologation testing, all sensorsmeasured at or sent to the track system) and in-vehicle(certification or advanced engineering, all sensorsmeasured in or sent to the vehicle).A user-centric mindsetCentral to this expanded portfolio is providing maximumefficiency, ease of deployment and ease of use. This isproven by the integration of the conditioners within LMSSCADAS Mobile, as well as by the scalability ofconfigura

LMS testing solutions. This includes the new and ultra-compact LMS SCADAS XS and innovative LMS Soundbrush, solutions for pass-by noise and durability testing engineering, highlights from our latest release, LMS Test.Lab 14, as well as a short review of our structural and environmental testing portfolios.