CO2 laser interactions with wood tissues during single pulse laser-incision

摘要: Abstract Incising is a technique used to improve fluid flow in impermeable woods during wood treatment processes. Previous studies relating the laser-incision of have neglected many aspects such as detailed analysis anatomy wood, including consideration tangential/radial faces and earlywood/latewood interactions with laser beam. By considering anatomy, complete investigation CO2 processes presented that yields new knowledge beam interaction growth rings when incising into faces, low-density earlywood higher density latewood within ring. Southern Yellow Pine, Radiata European Redwood Beech, each having different bulk densities, were laser-incised using 2 kW ROFIN radiation far-infrared regime (10.6 μm). Microstructural characterisations carried out better understand effect its parameters on depth, diameter quality incised holes. The hole shapes found be uniform however, circularity was significantly affected by presence tissues. Maximum minimum diameters holes measured Pine (~1.3 mm) Beech (~0.7 mm), respectively. Similarly, for equal powers used, maximum depths (~33 mm) (~25 mm), respectively, incident radial face samples. pulse duration had greater depth compared power showed dominant parameter designing