Experimental study of construction plywood in conditions of flat stress state.

Autor: Boytemirova, I. N., Boytemirov, F. A., Koreneva, A. I.
Předmět:
Zdroj: AIP Conference Proceedings; 8/17/2022, Vol. 2559 Issue 1, p1-7, 7p
Abstrakt: The aim of our work was to study the mechanical characteristics in conditions of flat stress state and widen the current knowledge of construction plywood appliance. It was decided that the best method for this investigation was to examine randomly selected plywood batches and analyse the results with the use of mathematical methods of statistics. The specimens were made up of plywood that was typified by different veneer grades. The main two groups of the specimens were manufactured with PF and UF resin. The conducted tests under the main types of flat stress in material (linear tension, compression and transverse bending) showed the strengths and their correlation between theoretical and obtained values. Based on the carried on plywood research the linear correlation dependence of veneer thickness on strength limit was obtained along and across fibres of external layers under compressive stress. Our experiments prove that veneer grade does not affect the tensile strength independent of the applied load direction regarding the fibre of external layers. This means that veneer grade defines only the quality of appearance. The mentioned above accessed results could be used for practical calculations during the design and manufacturing. [ABSTRACT FROM AUTHOR]
Databáze: Complementary Index