Assessment of the Strength Properties of Standing Trees Using Non-Destructive Methods

Abstract

In recent years, substantial advancements have been achieved in the realm of non-destructive testing (NDT) methodologies, which find application across diverse domains, including the assessment of structural wood quality and the evaluation of planted tree characteristics. Within the context of planted trees, numerous non-destructive and semi-destructive techniques have been developed for ascertaining the extent of degradation in tree trunks. This particular study focuses on the examination of the mechanical properties of brutian pine (Pinus brutia Ten.) trees situated in close proximity to the Ertokuş Madrasah in the Atabey district of Isparta province. These trees exhibit a noteworthy historical significance and are notable for their inclination towards the madrasah. For the purpose of this investigation, three incremental auger samples, each measuring 5 mm in thickness, were extracted from the trunks of five distinct trees at a height of 1.3 meters above ground level, resulting in a total of 15 incremental auger specimens. Utilizing a portable non-destructive testing instrument known as a Fractometer, as well as a thermal imaging camera, the resistance properties of these incremental augers were systematically determined. Bending and compressive strength measurements were recorded at intervals of 6 mm from the core to the outermost layer. Furthermore, the moisture content of the incremental augers was assessed using thermal imaging technology. Upon careful evaluation of the collected data, it is evident that the mechanical properties of the brutian pine trees under investigation are found to be within acceptable limits. Consequently, it has been conclusively established that there is no imperative need for the removal of these trees situated in front of the madrasah.