Avancerad sökning

Hittade 3 avhandlingar som matchar ovanstående sökkriterier.

1. 1. Water resistance of Scots pine joints produced by linear friction welding

   Författare :Mojgan Vaziri; Lars-Olof Nilsson; Luleå tekniska universitet; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; wood; wood welding; crack; CT scanning; image processing; MRI; microdensitometry; CPMAS C NMR; density; water absorption; tensile-shear strength; Träteknik; Wood Technology;

   Sammanfattning : Wood welding is a mechanical friction process allowing the assembly of timber without any adhesives. The process consists of applying mechanical friction, under pressure, alternately to the two wood surfaces to be welded. LÄS MER

3. 2. X-ray based tree ring analyses

   Författare :Johan Lindeberg; Sweden Swedish university of agricultural sciences; []
   Nyckelord :LANTBRUKSVETENSKAPER; AGRICULTURAL SCIENCES;

   Sammanfattning : In this thesis, two x-ray based dendro-analyses (batch-wise microdensitometry and energy dispersive x-ray fluorescence (EDXRF)) and the conditions under which these methods could be used on the two typical boreal conifers Norway spruce (Picea abies (L.) Karst.) and Scots pine (Pinus sylvestris L.) were evaluated. LÄS MER

4. 3. Physical and morphological aspects of linseed oil impregnated pine (Pinus Sylvestris)

   Författare :Tomas Olsson; Luleå tekniska universitet; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Wood Physics; Träfysik;

   Sammanfattning : This work has investigated the possibilities of increasing wood durability using environmentally friendly chemicals. The chemical used in this study was linseed oil. The study also investigated flow paths during impregnation in pine and spruce. LÄS MER