|
|
Experimentálne zistenie radiálných modulov pružnosti jarného a letného dreva smreku obyčajného métodou DIC
Vido, Michal
The aim of this work is to find radial modulus of elasticity in stress, and comparison between methods of detecting modulus of elasticity by transom and by digital image corellation (DIC). A transverse Reuss model of the composite deformation was used to calculate overall modulus of elasticity by DIC. Furthermore, the individual modules of elasticity between spring and summer wood of Norway spruce (Picea abies L.) were compared. The average value of modulus of elasticity detected by transom is 270,57 MPa. The value of modulus of elasticity of the whole sample detected by DIC is, on average, for all twenty samples 993,88 MPa. Another value is modulus of elasticity of the whole sample detected by DIC, which is converted by Reuss model and its average value is 969,7 MPa. Samples of summer wood detected by DIC have an average value of modulus of elasticity 1226,67 MPa and samples of summer wood detected by transom have an average value of modulus of elasticity 1036,53 MPa. The last value is modulus of elasticity of spring wood measured by DIC, which has on average 909,67 MPa.
|
guest ::
RSS feed.