Publications
NIBIOs employees contribute to several hundred scientific articles and research reports every year. You can browse or search in our collection which contains references and links to these publications as well as other research and dissemination activities. The collection is continously updated with new and historical material.
2000
Authors
Halvor B. Gjærum Mary Namaganda Kåre LyeAbstract
No abstract has been registered
Authors
Halvor B. Gjærum Mary Namaganda Kåre LyeAbstract
No abstract has been registered
Authors
Halvor B. Gjærum Mary Namaganda Kåre LyeAbstract
No abstract has been registered
Authors
Halvor B. Gjærum Mary Namaganda Kåre LyeAbstract
No abstract has been registered
Authors
Halvor B. Gjærum Mary Namaganda Kåre LyeAbstract
No abstract has been registered
Authors
Halvor B. Gjærum Mary Namaganda Kåre LyeAbstract
No abstract has been registered
Authors
Halvor B. Gjærum Mary Namaganda Kåre LyeAbstract
No abstract has been registered
Authors
Halvor B. Gjærum Mary Namaganda Kåre LyeAbstract
No abstract has been registered
Authors
Halvor B. Gjærum Mary Namaganda Kåre LyeAbstract
No abstract has been registered
Abstract
The present investigation deals with the properties of resonance wood destined for the production of musical instruments and with the methods for the determination of resonance wood quality. At the same time there are stated the range of values for the dynamic modulus of elasticity, for the speed of sound transmission and for the density of wood. The demands regarding dimension and growth characteristics of resonance wood are explained insisting first of all on pure subjective and visual criteria. The grading rules, existing only in a few regions in Germany, show that forestry is sensitized to this high value timber assortment only to a very small extent. With the Lucchimeter measuring method (elasticity tester) and the stress wave nondestructive evaluation technique spruce (Picea abies) and fir (Abies alba) wood panels are investigated which are destined for the production of guitars. The methods used as well as the results of measurement are compared with another. Furthermore the quantity of sales of resonance wood is presented after survey at the state owned forest management in Germany. The established small quantity of existing resonance wood is attributed to the sales of resonance wood not mentioned explicitly or described in detail. All in all the amount of resonance wood is supposed to be higher.