ANALYSIS OF WOOD MATERIAL RESPONSES AS MEASURED BY THREE POINTS BENDING

Abstract

The neck of guitar is a mechanical structure with a complex geometry which involves many operations and technological solutions with minimal materials consumption, and providing rigidity to maintain the strings tension during the playing. Meeting these requirements is an ongoing challenge for manufacturing because the wood used in the structure of the guitar neck is different as a species, as a structure, as physical-mechanical properties and rheological behavior. The paper presents the results of research conducted on samples from different types of wood: solid wood maple, glued laminated wood containing mahogany-maple-mahogany and others containing masaranduba-maple-masaranduba. The samples were subjected to the three-point bending with different intensities of loads determining for each maximum deflection and the maximum stresses. It was found that the use of laminated wood increases the rigidity of the guitar neck and the bending resistance; the most advantageous combination is masaranduba-maple-masaranduba.