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An investigation of the crack tendency on wood surfaces after different machining operations
KTH, Superseded Departments, Solid Mechanics.ORCID iD: 0000-0003-1227-2129
KTH, Superseded Departments, Solid Mechanics.ORCID iD: 0000-0001-8699-7910
2000 (English)In: Holzforschung, ISSN 0018-3830, E-ISSN 1437-434X, Vol. 54, no 4, 427-436 p.Article in journal (Refereed) Published
Abstract [en]

A hypothesis describing tip-crack generation during different machining operations on sapwood of pine surfaces and the differences between the pith side and bark side were investigated. The goal was to determine whether initial tip-cracks are generated already during the machining operation, before weathering. The evaluation of the results showed that about 10 Ic of the annual rings on the pith side and about 1 % of the annual rings on the bark side have cracks after the machining operation. A theoretical analysis of an idealised model using the finite element method (FEM) has also been carried out to investigate the tendency for growth of short initial tip-cracks during a simulation of the compression of a wood piece in a conventional planing operation. The analysis seems to confirm that there is a greater risk for cracks on the pith side than on the bark side.

Place, publisher, year, edition, pages
2000. Vol. 54, no 4, 427-436 p.
Keyword [en]
pine, wood surface, adhesion, coating, micro-cracks, FEM, mechanical machining, sawing, planing, microscopy
National Category
Applied Mechanics
URN: urn:nbn:se:kth:diva-19951ISI: 000088649300014OAI: diva2:338643

QC 20100525

QC 20151210

Available from: 2010-08-10 Created: 2010-08-10 Last updated: 2015-12-10Bibliographically approved

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