Klassifikation und Vermessung von Rissen in Nadelrund- und Nadelschnittholz

Zürich

2012

Artikel aus einer ZeitschriftUnselbständiges Werk

629

200175962

Cracks as an attribute of logs are an important quality factor for the production of sawn timber. They can develop in the standing tree due to growth stresses or extzernal influences, but also in felled due to tension releases or drying. The definitions for different types of cracks that can be found in standards and in literature lack consistancy and are not sufficient for scientific use. This paper proposes a classification scheme for cracks in logs and sawn timber that is based on existing definitions in literature but also includes newly on manual measurement of the crack features for scientific use.