Title:
Study of Wood Chip Size: Searching for a Method Based on Image Analysis
Author(s):
Pari, L., Febbi, P., Assirelli, A., Civitarese, V., Santangelo, E., Costa, C., Menesatti, P.
Document(s):
Paper
Poster
Abstract:
A standard method for the determination of the size distribution of wood chips is the oscillating screen method (EN 15149-1). Image analysis can give highly accurate measure of the two axial dimensions defined for each individual particle. Since the chip form influences the sieve results, the image analysis could provide a new method which is sensitive to the geometrical form for determining a more accurate measure of size integrated with form. A sample of wood chips was sieved through horizontally oscillating sieves, using five different screen hole diameters; the wood chips were sorted in decreasing size classes and the cumulative particle size distribution was determined. The true size distributions of a wood chip subsample, according to length and width, were determined by hand using a digital caliper and by weighing each of the chips. A comparison have been made between the traditional sieve result, the hand measured sizes (length and width) and the image analysis. The first results have shown that this last method has a high degree of accuracy for the characterization of wood chip size distribution. The main objective in the next future is to shift from a 2-dimensional static method to a 3-dimensional dynamic acquisition process.
Keywords:
wood chips, image analysis, size distribution, sieve result
Topic:
Biomass resources
Subtopic:
Short rotation forestry and short rotation coppice
Event:
21st European Biomass Conference and Exhibition
Session:
1AV.1.9
Pages:
173 - 175
ISBN:
978-88-89407-53-0
Paper DOI:
10.5071/21stEUBCE2013-1AV.1.9
Price:
FREE
