Shear Moduli Prediction of Calabria Pine (Pinus brutia Ten.) using Ultrasonic Wave Propagation

Abstract

Shear moduli of Calabria pine (Pinus Brutia Ten.) predicted using non-destructive test method in this study. Calabria pine logs harvested from Beşkonak, Burdur and sawn in to Radial and Tangential planks. 26 surface polyhedral NDT samples prepared in 65x65x65mm dimensions. All samples acclimatized at 20±1°C temperature and %65RH conditions. Ultrasonic shear wave velocities of Calabria pine wood calculated using time of flight (ToF) values. ToF values obtained using Olympus EPOCH 650 flaw detector and Panametrics NDT V153 shear wave transducers. Shear moduli predicted using calculated velocities. Average density and moisture content of the non-destructive test samples determined as 0.558g/cm3 and %12.66, respectively. Shear wave velocities and shear moduli of LR, LT, and RT planes were determined as 1408, 1306 and 666m/s and 1108, 952 and 248N/mm2, respectively.

Keywords

• ultrasonic
• shear wave velocity
• shear modulus
• calabriapine
• ultrasonik
• kesme dalgası hızı
• kesme modülü
• kızılçam