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Estimating suspended fibre material properties by modelling ultrasound attenuation
Luleå tekniska universitet, Institutionen för system- och rymdteknik, EISLAB.
2006 (Engelska)Ingår i: Mathematical Modeling of Wave Phenomena: conference on mathematical modeling of wave phenomea, Växjö, Sweden, 14 - 19 August 2005 / [ed] Börje Nilsson; Louis Fishman, Melville, NY: American Institute of Physics (AIP), 2006, s. 250-259Konferensbidrag, Publicerat paper (Refereegranskat)
Abstract [en]

An analytical model for use in the inverse problem of estimating material properties of suspended fibres from ultrasonic attenuation has been developed. The ultrasound attenuation is derived theoretically from the energy losses arising when a plane wave is scattered and absorbed off an infinitely long, isotropic, viscoelastic cylinder. By neglecting thermal considerations and assuming low viscosity in the suspending fluid, we can make additional assumptions that provide us with a tractable set of equations that can be solved analytically. The model can then be to used in inverse methods of estimating material properties. We verify the model with experimentally obtained values of attenuation for saturated Nylon fibres. The experimental results from Nylon fibres show local peaks in the attenuation which are thought to be due to the resonant absorption at the eigenfrequencies of the fibres. The results of the experiments show that the model is sufficiently sensitive to detect differences in different types of Nylon. Applications for suspended fibre characterization can be found in the paper manufacturing industry.

Ort, förlag, år, upplaga, sidor
Melville, NY: American Institute of Physics (AIP), 2006. s. 250-259
Serie
A I P Conference Proceedings Series, ISSN 0094-243X ; 834
Nationell ämneskategori
Annan elektroteknik och elektronik
Forskningsämne
Industriell elektronik
Identifikatorer
URN: urn:nbn:se:ltu:diva-30423DOI: 10.1063/1.2205808Scopus ID: 2-s2.0-33845592903Lokalt ID: 4385cb70-6cd4-11db-83c6-000ea68e967bISBN: 0-7354-0325-2 (tryckt)OAI: oai:DiVA.org:ltu-30423DiVA, id: diva2:1003650
Konferens
Conference on Mathematical Modeling of Wave Phenomena : 14/08/2005 - 19/08/2005
Anmärkning
Validerad; 2006; 20060913 (ysko)Tillgänglig från: 2016-09-30 Skapad: 2016-09-30 Senast uppdaterad: 2018-07-10Bibliografiskt granskad

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Aitomäki, YvonneLöfqvist, Torbjörn

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