Relation between static and dynamic modulus of elasticity of wood = Kapcsolat a faanyag statikus és dinamikus rugalmassági modulusza között

Divós, Ferenc and Tanaka, Toshinari (2005) Relation between static and dynamic modulus of elasticity of wood = Kapcsolat a faanyag statikus és dinamikus rugalmassági modulusza között. ACTA SILVATICA ET LIGNARIA HUNGARICA, 1 (1). pp. 105-110. ISSN 1786-691X

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Abstract

Static and dynamic modulus of elasticity (MOE) of spruce lumber were determined under different conditions like cross head speed, bending and longitudinal vibration, and mode numbers. The characteristic time of MOE determination is introduced. Characteristic time is defined as the typical MOE determination time. Shorter characteristic times are shown to result in higher MOE values. An order of magnitude change in characteristic time resulted in a 1.7% change in MOE. We found clear evidence that creep exists on a short time scale.

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