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Determination and optimisation of the sound reduction index of ship bulkheads through the wave propagation approach
KTH, School of Engineering Sciences (SCI), Aeronautical and Vehicle Engineering, Marcus Wallenberg Laboratory MWL.
KTH, School of Engineering Sciences (SCI), Aeronautical and Vehicle Engineering, Marcus Wallenberg Laboratory MWL.ORCID iD: 0000-0002-9632-8398
2018 (English)In: Proceedings of ISMA 2018 - International Conference on Noise and Vibration Engineering and USD 2018 - International Conference on Uncertainty in Structural Dynamics, KU Leuven - Departement Werktuigkunde , 2018, p. 4527-4541Conference paper, Published paper (Refereed)
Abstract [en]

Lightweight composite structures are progressively replacing traditional materials like steel structures in the shipbuilding industry for their light weight and good mechanical characteristics. However, a lightweight composite structure has generally poor acoustic properties and is not suitable to shield noise. In this case some comfort issues may arise on board. Ships are also a source of underwater noise, which can seriously pollute the aquatic environment if a suitable form of shielding is not envisaged. It is therefore essential that some acoustic features are predicted and optimised. The paper presents the measurements carried out on two different types of bulkhead: a homogeneous ribbed fibreglass partition and a sandwich structure with two symmetrical fibreglass leaves plus a balsa core. The optimisation of such structures can be carried out following the simulations performed by using a code based on the wave propagation approach theory.

Place, publisher, year, edition, pages
KU Leuven - Departement Werktuigkunde , 2018. p. 4527-4541
National Category
Other Engineering and Technologies
Identifiers
URN: urn:nbn:se:kth:diva-246511Scopus ID: 2-s2.0-85060385040ISBN: 9789073802995 (print)OAI: oai:DiVA.org:kth-246511DiVA, id: diva2:1299284
Conference
28th International Conference on Noise and Vibration Engineering, ISMA 2018 and 7th International Conference on Uncertainty in Structural Dynamics, USD 2018; Leuven; Belgium; 17 September 2018 through 19 September 2018
Note

QC 20190326

Available from: 2019-03-26 Created: 2019-03-26 Last updated: 2019-03-26Bibliographically approved

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Feng, Leping

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Output format
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