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Title

LONGITUDINAL VIBRATION PARAMETERS VARIATIONS OF BEECH WOOD OBSERVATION IN LINE WITH INDEPENDENT CHANGES IN MOISTURE CONTENT AND TEMPERATURE

Pages

 Start Page 39 | End Page 49

Abstract

 In this study the independent effects of MOISTURE CONTENT and TEMPERATURE variation on dynamic properties of beech WOOD were investigated. According to ISO 3129 standard 10 clear samples were selected. The samples exposing to different MOISTURE CONTENT and TEMPERATURE and then longitudinal vibration test were performed on them. Results showed that the dynamic MODULUS OF ELASTICITY values of water immersed samples were smaller than the samples with lower MOISTURE CONTENT, and also in constant MOISTURE CONTENT as TEMPERATURE increased dynamic MODULUS OF ELASTICITY decreased. Increasing TEMPERATURE from 60 oC damping factor remained constant, while the damping increased with the increase of MOISTURE CONTENT. Maximum values of dynamic MODULUS OF ELASTICITY were observed in completely dried samples and increasing TEMPERATURE from 60 oC the dynamic MODULUS OF ELASTICITY values in samples were descended.

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