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Benchmark for experimentation of acoustic transmission loss applied to helicopter trim panels

Autor: Wijntjes, R., Simon, F., Haase, T., Unruh, O., Tijs, E.

Publikováno v: ERF 2016 42nd European Rotocraft Forum
ERF 2016 42nd European Rotocraft Forum, Sep 2016, LILLE, France

International audience; The acoustic Transmission Loss (TL) of a vibrating structure, like a sample of helicopter trim panel, is generally measured in a laboratory set-up within controlled conditions. It represents the ratio between the incident acou

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=dedup_wf_001::c8ac2c6c18fad12087f36a47eeb175a3
https://hal.archives-ouvertes.fr/hal-01399296/document

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Activities of European Research Laboratories Regarding Helicopter Internal Noise

Autor: Simon, F., Haase, T., Unruh, O., Pohl, M., Tijs, E., Wijntjes, R., Van Der Wal, H., Ghiringhelli, G.L.

Publikováno v: Aerospace Lab
Aerospace Lab, Alain Appriou, 2014, p. 1-14. ⟨10.12762/2014.AL07-04⟩

Although the acoustic comfort in helicopter cabins is not subject to European Recommendations regarding aeronautic environmental noise (ACARE 2020), helicopter manufacturers use many resources to improve internal acoustic comfort. This task is partic

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4abc8601d49a695259fb446860ade47d
https://elib.dlr.de/89952/

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Transfer path based tyre absorption tests

Autor: Tijs, E., Makwana, B.K., Peksel, O., Amarnath, S.K.P., Bekke, Dirk, Krishnan, K.S.

Publikováno v: Acoustics 2013 New Delhi : "technologies for a quieter India", 1-6
STARTPAGE=1;ENDPAGE=6;TITLE=Acoustics 2013 New Delhi : "technologies for a quieter India"

The development process of a tyre usually involves a combination of simulation and testing techniques focused on characterizing acoustic/aerodynamic and vibrational phenomena. One of the acoustic phenomenon of interest is the absorption of the tyre,

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=narcis______::8ffc19add461fde6614f2945b1fdc997
https://research.utwente.nl/en/publications/transfer-path-based-tyre-absorption-tests(5bcf8967-fe4c-4b62-915e-58ce3263fb00).html

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Visualization of acoustic intensity vector fields using scanning measurement techniques

Autor: Comesaña, D. F., Tijs, E., Cats, P., Cook, D.

Publikováno v: Scopus-Elsevier

Sound propagation paths are not always well understood mainly because of the complex nature of the source or the environment. A direct method to capture the sound energy flow throughout a room is to measure the three-dimensional sound intensity distr

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=dedup_wf_001::206aea876df72d252ae6f838ecb9c49e
https://eprints.soton.ac.uk/357181/

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Two complementary Microflown based methods to determine the reflection coefficient in situ

Autor: Bree, H.E. de, Tijs, E., Basten, T.G.H.

Publikováno v: International Conference on Noise and Vibration Engineering, ISMA 2006, 18-20 September, 2006, Heverlee, Belgium, 1889-1900

Two complementary methods have been developed that are capable to determine the reflection coefficient of acoustic absorbing materials in situ. The methods are compared with a measurement in the Kundt's tube. The first method is based on the measurem

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=dedup_wf_001::fdc9b0cadbb090efc09272210fa42b54
http://resolver.tudelft.nl/uuid:5b9f219b-8398-49e5-834e-24dbf2346292

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