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Transfer Path Analysis can be used with physical measurements, simulation data, or a combination of the two.
ADL Alpharetta works actively with both Siemens and HBK for solving its N&V challenges. Source Path analysis typically involves taking measurements in operating and static conditions equally. This requires us to tear down the system into its constituent parts. An example tear down was performed on two commercial blenders-Vitamix and Spectrum
Useful link: https://community.sw.siemens.com/s/article/an-introduction-to-transfer-path-analysis
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