期刊
OPTICS EXPRESS
卷 22, 期 14, 页码 16829-16840出版社
OPTICAL SOC AMER
DOI: 10.1364/OE.22.016829
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- Kempe Foundations
- Process IT Innovations at LTU
Fiber orientation is an important structural property in paper and other fibrous materials. In this study we explore the relation between light scattering and in-plane fiber orientation in paper sheets. Light diffusion from a focused light source is simulated using a Monte Carlo technique where parameters describing the paper micro-structure were determined from 3D x-ray computed tomography images. Measurements and simulations on both spatially resolved reflectance and transmittance light scattering patterns show an elliptical shape where the main axis is aligned towards the fiber orientation. Good qualitative agreement was found at low intensities and the results indicate that fiber orientation in thin fiber-based materials can be determined using spatially resolved reflectance or transmittance. (C) 2014 Optical Society of America
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