Гомон, Св. Св. та Гомон, С. С. та Петренко, О. В. (2024) РЕЗУЛЬТАТИ ЕКСПЕРИМЕНТАЛЬНИХ ДОСЛІДЖЕНЬ ДЕФОРМІВНИХ ПОКАЗНИКІВ ДЕРЕВИНИ РІЗНОГО ВІКУ. Вісник Національного університету водного господарства та природокористування (3(107)). с. 169-175.

Text Vt3202417.pdf Download(188kB)

Анотація

Наведено методику експериментальних досліджень деревини листяних та хвойних порід різного віку осьовим стиском вздовж волокон. За результатами експерименту встановлено критичні деформації деревини різного віку. Наведено динаміку зміни критичних відносних деформацій різного віку. Запропоновано графіки залежності критичних деформацій досліджуваних порід деревини від їхнього віку.

Title in English

RESULTS OF EXPERIMENTAL STUDIES OF DEFORMATION INDICATORS OF WOOD OF DIFFERENT AGE

English abstract

Over the past decades, the popularity of products, materials, and constructions made of wood is constantly growing. As a result of such rapid growth in the world, stocks of industrial wood are decreasing, and the age of the trees in the forests is also decreasing. In many cases, humanity began to use wood of a younger age. Therefore, in our opinion, it is necessary to conduct experimental studies of coniferous and hardwood solid wood of different ages on modern testing machines. And also establish the influence of this factor on the main deformation parameters. The purpose of the research was to determine the critical deformations of hardwood and coniferous wood of standard moisture content of different ages by axial compression along the fibers experimentally. The methodology of experimental studies of deciduous and coniferous wood species of standard moisture content aged 60, 40, and 20 years by axial compression along the fibers under a rigid regime of load application is given. Experimental studies were carried out on the STM-100 servo- hydraulic testing machine. The samples were tested by a single short- term compressive load along the fibers. According to the results of the experiment, the critical relative deformations of wood of different ages were established. The dynamics of changes in critical relative strains of different ages are given. Graphs of the dependence of the critical deformations of the studied wood species on their age are proposed. It was established that the critical relative deformations slightly decrease from 60 to 40 years and significantly from 40 to 20 years. it was determined that the critical relative deformations of deciduous and coniferous species decrease with a decrease in the age of wood from 60 to 20 years, in particular, for birch wood by 19%, alder by 49%, ash by 21%, larch by 20%, pine by 20%, spruce by 29%.

Перегляд елементу

Завантажень