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Ultrasonic methods in determining elastic material properties of fibres in suspension
Luleå University of Technology, Department of Computer Science, Electrical and Space Engineering, Embedded Internet Systems Lab.
2008 (English)In: 2007 IEEE Ultrasonics Symposium proceedings: New York City, NY, USA, 28 - 31 October 2007, Piscataway, NJ: IEEE Communications Society, 2008, p. 46-49Conference paper, Published paper (Refereed)
Abstract [en]

The presented study concerns the application of the pulse-echo ultrasound measurement technique in determining the elastic properties of fibres suspended in water. The two kinds of fibre materials are investigated, nylon 6/6 fibres and softwood pulp fibres. The fibre mass fraction was 0.5% for nylon and ranges from 0% up to 1% for softwood pulp. The ultrasonic measurements are performed in the frequency range of 2-11 MHz. It is shown that the velocity dispersion of the ultrasound is small for each suspension sample. In obtaining the fibres longitudinal Young's modulus two methods are used, one based on phase velocity and one based on acoustic attenuation. It is found that both methods gives reasonable estimates of the longitudinal Young's modulus for nylon 6/6. For pulp fibres the determined Young's modulus is overestimated in comparison with earlier findings.

Place, publisher, year, edition, pages
Piscataway, NJ: IEEE Communications Society, 2008. p. 46-49
Series
I E E E International Ultrasonics Symposium. Proceedings, ISSN 1051-0117
National Category
Other Electrical Engineering, Electronic Engineering, Information Engineering
Research subject
Industrial Electronics
Identifiers
URN: urn:nbn:se:ltu:diva-39368DOI: 10.1109/ULTSYM.2007.25Local ID: e16121e0-70d0-11dc-a60c-000ea68e967bISBN: 978-1-4244-1384-3 (print)OAI: oai:DiVA.org:ltu-39368DiVA: diva2:1012879
Conference
IEEE Ultrasonics Symposium : 28/10/2007 - 31/10/2007
Note
Validerad; 2008; 20071002 (tlt)Available from: 2016-10-03 Created: 2016-10-03 Last updated: 2017-11-25Bibliographically approved

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Publisher's full texthttp://www.ieee-ultrasonics2007.org/

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