Eurasian Journal of Forest Science

15-24

Authors: Muhamet Ymeri1*, Agron Bajraktari1, Sejdi Hoxha1, Kushtrim Cukaj1, Hektor Thoma2, Leonidha Peri3

The technology of final wood processing has undergone during the last two decades positive changes, achieving a rapid development through the application of advanced technologies as the numeric-controlled machines (CNC). The focus of this paper lies in the comparison of technical and economic parameters in drilling operations, with a three-dimensional CNC mill-drill machine and with a traditional, horizontal-vertical tenoner drilling machine. The materials used in the study are particleboard panels for the production of a window-case. The study compares (i) the cutting time of the constructive parts of the window-case measured by the software of the CNC machine, and through a chronometer at the tenoner drilling machine and (ii) the cost of labor force engaged. The comparison of technical and economic parameters measured/calculated reveals clear advantages of the three-dimensional CNC machine over the traditional one. These advantages consist in operations time savings, higher quality of processing, lower internal transportation times, lower costs of processed parts and automatic optimization of material.

35-43

Authors: Türker Dündar1*, Ferenc Divos2

The pioneering studies on non-destructive testing (NDT) and evaluation (NDE) of wood have been introduced in early 20th century in Europe as it is in North America. Several improvements were recorded since then in NDT&NDE technologies with parallel to the development in wood industry. A wide range of NDT technologies are currently being used successfully for evaluating wood and wood based materials in many areas from the inspection of artifacts to on-line production control in plants all over the world. Today, research and technology transfer efforts are underway throughout the world to further the development and use of nondestructive methods to address the many challenges that arise with using forest resources. This study aims to review the NDT/NDE research efforts and their practical applications being conducted in Europe that is significant contributors to the international research and development activities.