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- Title
Near-Infrared Imaging Method for Measuring the Thickness of Water-Dilutable Turbid Layers.
- Authors
Hirvonen, Tapani; Penttinen, Niko; Hauta-Kasari, Markku; Sorjonen, Mika; Peiponen, Kai-Erik
- Abstract
In this article, we report on a rapid infrared imaging method to measure the thickness and uniformity of water-dilutable two-dimensional macroscopic liquid objects. The method is based on the near-infrared absorption of water at 1440 nm or 1930 nm wavelength. As an example, the method is applied for nondestructive inspection of the thickness and uniformity of polyvinyl (PV)-based polyvinyl alcohol (PVA) and polyvinyl acetate (PVAc) adhesives, which are used in wood products. The method was also found to be able to observe the drying process of the adhesives.
- Subjects
INFRARED imaging; THICKNESS measurement; UNIFORMITY; WATER quality; MACROSCOPIC films; POLYVINYL alcohol; POLYVINYL acetate
- Publication
Journal of Imaging Science & Technology, 2014, Vol 58, Issue 1, p1
- ISSN
1062-3701
- Publication type
Article
- DOI
10.2352/j.imagingsci.technol.2014.58.1.010503