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ACOUSTIC MEASUREMENTS OF THE SLOW DYNAMICS OF THIN SHEETS.
Blekinge Institute of Technology, School of Engineering.
Blekinge Institute of Technology, School of Engineering.
2009 (English)Independent thesis Advanced level (degree of Master (Two Years))Student thesis
Abstract [en]

Based on the relationship between resonance and tension on thin sheets, an experimental approach was adopted to test the slow dynamic behaviour of Paper, Low Density Polyethylene (LDPE), the laminate of both and same laminate with Aluminium inclusive. We used a non contact acoustic excitation and non contact laser sensing. We chose to use a non contact acoustic excitation for its efficiency. A mixed dynamic extension was applied to the specimens including periods of dynamic extension and a long time of constant extension (conditioning). The modal parameters were extracted via a laser vibrometer using the LabVIEW software. The results enabled us to show the slow dynamic characteristics of the thin sheets.

Place, publisher, year, edition, pages
2009. , 88 p.
Keyword [en]
Slow Dynamics, Relaxation, Recovery, Acoustic, Measurement, Laser-sensing, non-contact, LabVIEW.
National Category
Mechanical Engineering
Identifiers
URN: urn:nbn:se:bth-2210Local ID: oai:bth.se:arkivex93AB8D4F0EAC6740C125770100727BD8OAI: oai:DiVA.org:bth-2210DiVA: diva2:829477
Uppsok
Technology
Supervisors
Note
Ezeoma Kingsley O. Gyllenstjarnas Vag 18 Lgh 15, 37140, Karlskrona. 0046736597114, deaccurate@yahoo.com, goodking707@yahoo.com, Kai Yang, epiphany_edwen@hotmail.com, 0046736158980Available from: 2015-04-22 Created: 2010-04-10 Last updated: 2015-06-30Bibliographically approved

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CiteExportLink to record
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Citation style
  • apa
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