PROCESSING OF THE EXPERIMENTAL RESULTS OF THE CHAIN FLAIL DEBARKING RESEARCH OF SEGMENTED TIMBER
The PURPOSE of the study is to identify the statistical regularities of changes in regime parameters of chain flail debarking of wood influencing the energy consumption process. METHODS. The mathematical statistics method based on Excel spreadsheet is used. RESULTS AND THEIR DISCUSSION. The tests of the homogeneity of variances of Cochran's C tests show that the hypothesis of homogeneity of variances of experiments does not deviate at the 5% significance level (calculated value (0.32 - under the climb feed, 0.35 - under the opposed feed) is less than the critical value (0.4)). The accuracy of experiments is evaluated by the reproducibility variance of S<sub>вс</sub><sup>2</sup> = 0.09 - under the climb feed and 0.073 - under the opposed feed with the number of degrees of freedom f<sub>вс</sub> = 27. The error of experiment reproducibility is S<sub>вс</sub> = 0.3 - at the climb movement and 0.27 - at the opposed movement. CONCLUSIONS. We have obtained the regression models of functional relationship between the energy consumption and debarking mode parameters at climb and opposed feeds adequate to the experiment, suitable for the description of the chain flail debarking process and allowing to solve the applied problems of justifying the parameters and operating modes when designing chain flail debarking equipment. It is recommended to use on industrial installations the rational processing modes involving climb debarking with the debarking shaft rotation rate from 37 to 50 m/s and the feed rate from 0.9 to 1.5-2 m/s.