Evaluation of the Accuracy of Wood Drilling Resistance Measurement Method in Dendrochronological Studies
Journal Title: Lesnoy Zhurnal (Russian Forestry Journal) - Year 2023, Vol 5, Issue 5
Abstract
One of the promising methods for determining physical and mechanical properties and structure of wood is the method based on the measurement of drilling resistance. Limitations of application of the method of measuring drilling resistance in dendrochronological studies are related to a number of factors that have a significant impact on the accuracy of determining the variation of physical and mechanical properties of wood within annual layers: the depth of drilling, its direction relative to the fibers, and the speed parameters of the drilling process. In order to assess the accuracy of measuring the radial growth of pine wood (Pinus sylvestris L.) with moisture content of 6â8 %, the ResistYX device and standard thin drill bits were used. On the basis of comparative analysis of radial wood growth determined by the optical method and the method of measuring resistance to drilling, it was found that in order to obtain accurate data on growth with a correlation coefficient greater than 0.7, it is recommended to measure no more than 17 annual layers on one sample, which corresponds to an average total width of annual layers of 36.6 mm. The influence of the main reasons for the decrease in the accuracy of radial growth determination by the drilling resistance measurement method was studied: geometrical parameters of the cutting part of a thin drill bit, deviation of the drilling direction from the specified one, impossibility of precise determination of the strictly radial drilling direction, wood flaws, as well as friction of the drill shank when the drilling depth increases. To increase the accuracy of the method of measuring drilling resistance in dendrochronological studies it is proposed to develop a method including the use of a special or newly developed tool for more accurate determination of the core and radial drilling of wood or round timber; to increase the rigidity of the thin drill bit; to provide the required fixation of the thin drill bit during its initial contact with wood and inside the device. Further studies in this direction will be associated with the assessment of measuring accuracy for the radial growth of coniferous wood by the feeding force for drill bit penetration. Acknowledgements: The research was supported by the Ministry of Science and Higher Education of the Russian Federation (Grant â 075-15-2021-674/3) and Core Facility Centre «Ecology, biotechnologies and processes for obtaining environmentally friendly energy carriers» of the Volga State University of Technology, Yoshkar-Ola and by the Russian Science Foundation grant No. 22-79-00098, https://rscf.ru/project/22-79-00098/. For citation: Chernov V.Yu., Sharapov E.S., Gaisin I.G. Evaluation of the Accuracy of Wood Drilling Resistance Measurement Method in Dendrochronological Studies. Lesnoy Zhurnal = Russian Forestry Journal, 2023, no. 5, pp. 135â150. (In Russ.). https://doi.org/10.37482/0536-1036-2023-5-135-150
Authors and Affiliations
Vasilii Yu. Chernov,Evgenii S. Sharapov,Ilschat G. Gaisin,
Keywords
Related Articles
- EP ID EP723412
- DOI 10.37482/0536-1036-2023-5-135-150
- Views 21
- Downloads 0
The Effectiveness of Low Frequency Electromagnetic Field and Hydrogel Influence on Survival Rate and Growth of Red Oak (Quercus rubra L.) Annual Seedlings
This work presents the results of a research that was conducted in the Donskoy Leskhoz nursery of the Forestry Department of the Lipetsk Region. The purpose of the research is to determine the effectiveness of the influe...
Depending on the Distance between Forest Areas and Pollution Sources around Ulaanbaatar City of Mongolia
Seed quality and seed germination are the major indicators determining the success of regeneration and structure in natural forest ecosystems. This study focuses on problems associated with seed quality and seed germinat...
Formation of Biologically Stable Protective Pine Forests by Improvement Thinning in Northern Kazakhstan
The article deals with the effect of thinning in a permanent trial plot (PTP). The objects of care were natural clean even-aged pine forests growing in arid conditions of the Kazakh Uplands (case study of the Burabay Nat...
Digital Scanning of Woody Plant Growth and Development
The paper presents a photometric device and a procedure for quickly recording the characteristics of organs or parts of woody plants during their growth in the field conditions with maximum detail and accuracy. The proce...
Modeling of Critical Local Deformations of Growing Tree Bark under Wind Loads
The interaction between wind loads and forest plantations has been fairly well understood. A large amount of valuable scientific and practical information has been obtained and published so far in this field. There are s...