Short communication: Fracture energy of wood; relation to mechanical pulping

Authors
Ottestam, C Salmen, L
Citation
C. Ottestam et L. Salmen, Short communication: Fracture energy of wood; relation to mechanical pulping, NORD PULP P, 16(2), 2001, pp. 140-142
Citations number
12
Categorie Soggetti
Material Science & Engineering
Journal title
NORDIC PULP & PAPER RESEARCH JOURNAL
ISSN journal
02832631 → ACNP
Volume
16
Issue
2
Year of publication
2001
Pages
140 - 142
Database
ISI
SICI code
0283-2631(2001)16:2<140:SCFEOW>2.0.ZU;2-9
Abstract
The fracture energy of wet wood was determined at temperatures up to 95 deg reesC in order to gain information on energy requirements in the mechanical pulping process. Notched beams were tested in three-point bending under st able crack growth conditions. The fracture energy was found to be lower in the radial than in the tangential direction and decreasing with increasing temperature. Based on the separated fiber area the energy for total fiber s eparation in refining could be calculated to between I to 3 kWh/ton.