b'Automotive | Engineer InnovationThe convincing power of imagesThe acoustic camera system offers more than data capture. The obtained image overlay provides unmistakable evidence of the analysis results. Multiple data sets can easily be compared at a glance as the powerful analysis software features multi-batch processing capabilities. In that way, different configurations are quickly compared and assessed, saving precious analysis time on individual data sets.In the lower frequencies, acoustic pressure is often the cause of faintly perceived annoyances that prove to be tiresome for long-haul truck drivers. Camera, the NVH team at Volvo Trucks The array makes it a lot Using the Simcenter Testlab 3D Acoustic applies the equivalent source methodeasier to assess multiple (ESM) to obtain clear displays of the low- to mid-frequency noise sources. ESM also helps quantify noise sourcesvehicles in shorter times, for so that they can be ranked in order of sound contribution. benchmark, quality checks or Manns notes the system lets experts point to a selected sound source,hot spot detection on a displayed as a red spot on the computer screen and replay the audio file of theprototype.identified noise issue. Further, she explains it allows them to analyze, rank and compare the sound contribution ofTheresia Mannsvarious large areas such as the vehiclesSenior feature analyst dashboard, side windows, roof airVolvo Trucksvents, etc.Beyond the strong analysis capabilitiesWith the first electric trucks rolling out of the systems software, Manns says,the Volvo Trucks production lines by The Simcenter solution is a user- 2019, it is expected that Manns and the friendly tool for presenting results toother engineers in the team will take up designers and the management team.an increased workload. As Claes Nilsson, To adapt a well-known phrase, since anpresident of Volvo Trucks, states in a image is worth a thousand words, thepress release: This opens the door to graphical results obtained with thenew forms of cooperation with cities array demonstrate the value of designthat target to improve air quality, reduce modification. traffic noise, and cut congestion during peak hours since commercial operations Putting the test system through itscan instead be carried out quietly and paces without tailpipe exhaust emissions early Manns is an enthusiastic user of thein the morning or late at night.Simcenter Testlab 3D Acoustic Camera system, but admits that she and herAchieving quiet operation has always team have not been blindly trusting thebeen the challenge of the team of tool from the start: We performedacousticians. In acoustic terms, truck numerous tests with the Simcenterelectrification translates in different, Testlab 3D Acoustic Camera beforeoften more tonal sound issues. There is deciding to invest in it. Ultimately, theno doubt the Simcenter Testlab 3D method convinced us, and today theAcoustic Camera is a strong asset for array constitutes a valuable asset for ourhelping to detect and eradicate those testing team. issues. n61'