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Stiffness and stiffness variation in paper measured by laser-generated and laser-recorded bending waves
Luleå tekniska universitet.
1994 (English)In: Journal of Pulp and Paper Science (JPPS), ISSN 0826-6220, Vol. 20, no 11, p. 328-332Article in journal (Refereed) Published
Abstract [en]

Stiffness in paper is measured by holographic interferometry. The displacement field is numerically evaluated using a phase-stepping and phase-unwrapping reconstruction technique. Transient bending waves in the paper sample are generated and recorded by the same pulsed laser. The proposed method can be developed into a commercial on-line measuring device to measure paper stiffness. A number of defects, like variations in thickness, stiffness or density, are identified using this technique.

Place, publisher, year, edition, pages
1994. Vol. 20, no 11, p. 328-332
National Category
Applied Mechanics
Research subject
Experimental Mechanics
Identifiers
URN: urn:nbn:se:ltu:diva-6302Local ID: 4850eb90-02d3-11dc-ad0a-000ea68e967bOAI: oai:DiVA.org:ltu-6302DiVA, id: diva2:979179
Note
Godkänd; 1994; 20070515 (cira)Available from: 2016-09-29 Created: 2016-09-29 Last updated: 2017-11-21Bibliographically approved

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