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Monitoring microstructural material changes in paper through microscopic speckle correlation rate measurements
Luleå University of Technology, Department of Engineering Sciences and Mathematics, Fluid and Experimental Mechanics.ORCID iD: 0000-0003-4879-8261
Luleå tekniska universitet.
2004 (English)In: Optics and lasers in engineering, ISSN 0143-8166, E-ISSN 1873-0302, Vol. 42, no 2, p. 193-201Article in journal (Refereed) Published
Abstract [en]

A system for real-time digital speckle correlation rate measurements is developed and applied on printing paper in the micro-scale. The system consists of a continuous laser and a CCD camera connected to a PC. To measure on objects in the micro-scale the system is connected to a stereomicroscope where one of the channels is used for imaging and the other channel is used for illumination of the object surface. The system is evaluated through measurements on printing paper over an area of 1 mm2 and with a spatial resolution of 30 μm on the object. The results show that the system is able to monitor the dynamics in paper during both wetting and drying in real-time over a time scale ranging from one-tenth of a second to several hours

Place, publisher, year, edition, pages
2004. Vol. 42, no 2, p. 193-201
National Category
Applied Mechanics
Research subject
Experimental Mechanics
Identifiers
URN: urn:nbn:se:ltu:diva-2573DOI: 10.1016/j.optlaseng.2003.08.004ISI: 000221507100007Scopus ID: 2-s2.0-2142754472Local ID: 033ad0f0-6f73-11db-962b-000ea68e967bOAI: oai:DiVA.org:ltu-2573DiVA, id: diva2:975426
Note
Validerad; 2004; 20060926 (cira)Available from: 2016-09-29 Created: 2016-09-29 Last updated: 2018-07-10Bibliographically approved

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Sjödahl, Mikael

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