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2023 (English)In: 2022 Conference Proceedings Transport Research Arena, TRA Lisbon 2022, Elsevier B.V. , 2023, Vol. 72, p. 989-996Conference paper, Published paper (Refereed)
Abstract [en]
In TRANSIT, experimental methods are developed to separate and characterise noise sources on moving trains. Improved microphone array techniques allow quantification of sound power and directivity. Source separation methods based on the Pass-By Analysis method, Advanced Transfer Path Analysis and the TWINS model are also developed. For trains at standstill, new test methods are developed to quantify noise transmission paths from sources to the standard microphone positions accounting for installation effects. Several measurement campaigns are used to demonstrate and verify these methods. In addition, innovative materials and methods are investigated for improved sound comfort in trains. Approaches considered include optimal sound absorption at the source, attenuation along ducts for air conditioning systems and innovative meta-structure designs for the car-body parts.
Place, publisher, year, edition, pages
Elsevier B.V., 2023
Keywords
Meta-materials, Railway Noise, Source Separation, Technical Specifications for Interoperability
National Category
Vehicle Engineering Fluid Mechanics and Acoustics
Identifiers
urn:nbn:se:kth:diva-342806 (URN)10.1016/j.trpro.2023.11.527 (DOI)2-s2.0-85182939436 (Scopus ID)
Conference
2022 Conference Proceedings Transport Research Arena, TRA Lisbon 2022, Lisboa, Portugal, Nov 14 2022 - Nov 17 2022
Note
QC 20240208
2024-01-312024-01-312024-02-29Bibliographically approved