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Förhållandet mellan ultraljudshastigheten och fibervinkeln på stående hybridasp / Relationship between ultrasonic velocity and spiral grain in standing hybrid aspen trees

Wood anisotropic- and orthotropic properties and structure, entails a certain limitation regarding its final use. Its properties have there an important role, depending on what it will be used. In order to not decompose the material for the full quality determination, necessary alternative methods that can do the job without decomposition. One such method is the acoustic investigation by ultrasonic techniques. The method has been used in a variety of areas, the last few decades, so even in the wood industry. One question asked was whether the method can be used to examine the slope of grain angle under bark of the hybrid aspen. A comparison of an acoustic ultrasonic measurements and a manual measurement with a fiber angle measuring device with respect to the fiber angle, were made. The result was that some connection existed between fiber angle and the ultrasonic velocity.

Identiferoai:union.ndltd.org:UPSALLA1/oai:DiVA.org:lnu-58347
Date January 2016
CreatorsSjöberg, Samuel
PublisherLinnéuniversitetet, Institutionen för skog och träteknik (SOT)
Source SetsDiVA Archive at Upsalla University
LanguageSwedish
Detected LanguageEnglish
TypeStudent thesis, info:eu-repo/semantics/bachelorThesis, text
Formatapplication/pdf
Rightsinfo:eu-repo/semantics/openAccess

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