18 November 2013 Retro-diffusion and transmission of laser radiation to characterize the paper fiber distribution and mass density
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Proceedings Volume 8785, 8th Iberoamerican Optics Meeting and 11th Latin American Meeting on Optics, Lasers, and Applications; 8785AY (2013) https://doi.org/10.1117/12.2022367
Event: 8th Ibero American Optics Meeting/11th Latin American Meeting on Optics, Lasers, and Applications, 2013, Porto, Portugal
Abstract
This work concerns the characterization of the fiber distribution and mass density of paper samples (extracted from paper sheets) using an optical laser system previously designed and implemented by our research team. To accomplish this task, the developed optical system was used to illuminate the paper samples with laser radiation, by opposite sides, while two image detectors captured images of the retro-diffused and transmitted laser radiation on each side of the paper samples. The captured images were then submitted to several processing routines to enable the assessment of the fiber distribution and mass density. In our experiments, two paper samples extracted from paper sheets of different characteristics were used. In terms of experimental work, the samples were both scanned with the system considering several points dispersed across their entire area, allowing the assessment of both parameters locally (for specific locations of the samples) and globally (considering the samples as a whole).
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António de O. Mendes, Paulo T. Fiadeiro, Ana P. Costa, Maria E. Amaral, Mohamed N. Belgacem, "Retro-diffusion and transmission of laser radiation to characterize the paper fiber distribution and mass density", Proc. SPIE 8785, 8th Iberoamerican Optics Meeting and 11th Latin American Meeting on Optics, Lasers, and Applications, 8785AY (18 November 2013); doi: 10.1117/12.2022367; https://doi.org/10.1117/12.2022367
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