Journal
MATERIALS AND STRUCTURES
Volume 49, Issue 10, Pages 4003-4012Publisher
SPRINGER
DOI: 10.1617/s11527-015-0769-1
Keywords
Medium density fiberboards; Fiber bundles; Orientation tensor; Segmentation; Computer tomography
Categories
Funding
- German Federation of Industrial Research Associations (AiF) in the program for promoting the Industrial Collective Research (IGF) of the Federal ministry for economic Affairs and Energy (BMWi) of the German Bundestag [IGF 17644N]
- Latvia state research programme
- Riga Technical University, Faculty of Building and Civil Engineering
Ask authors/readers for more resources
This paper presents numerical methods for the characterization of fiber orientation and fiber bundles of medium density wood fiberboards (MDF). The strength and stiffness of MDF is significantly affected by the fiber orientation and fiber bundles. Proposed methods and results are necessary to virtually generate realistic fiber networks and optimize MDF by using computer simulations. Based on 3D CT images for laboratory manufactured MDF with oriented fibers, the fiber orientation is calculated in two ways. Firstly, we use an image processing method based on Hessian matrix directly on CT image. Secondly, we computed the effective heat conductivity by solving PDEs on a segmentation of the CT image to estimate the fiber orientation. A fiber bundle segmentation method based on local fiber orientations is introduced. Fiber bundles, which are segmented by this method show good agreement with manually segmented ones. It was observed that fiber bundles are oriented in MDF plane with log-normal distribution of bundle length. The proposed methods are general and can be used also to calculate fiber orientation and segment fiber bundles in fiber concrete, paper, glass and carbon fiber composites.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available