Determination of the strength performance of table frames

Igor Džinčić,Vojislav Dacić,Tanja Palija,Dragan Živanić

doi:10.4067/s0718-221x2021000100461

Igor Džinčić, Vojislav Dacić + Show 2 more

Open Access

https://doi.org/10.4067/s0718-221x2021000100461

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Abstract

The objective of this study was to investigate relation of diameter of pilot hole and screw, and machining accuracy on withdrawal strengths of the screws and durability of the dining tables. For this purpose, fasteners and material types on the failure loads of dining table corner joints have been analyzed experimentally and statistically. Double ended thread bolts with different drilling regimes have been used as fastener types. Parallel investigation of rigidity and durability of tables, according to the current EN norms, and withdrawal capacities in accordance with the procedures described in ISO 9087 was performed. According to the results, it is concluded that the diameter of the drilled hole significantly influences the value of the withdrawal strengths of the screws. By analyzing the effect of drilling diameter on rigidity of tables, a statistically significant difference was determined. As the drilling diameter increases, the rigidity of the examined dining tables decreases

Highlights

Determing the quality of dining tables according to the EN norms, shows that horizontal fatigue is one of the most important factors of durability
When we are analyzing the quality of the dining tables, we have to make a difference between tables with no extension and tables with the possibility of extension
The stength and durability of the XL tables will depend on the type of slider, the way how it is attached to the underconstruction, the length of the draw, the size of the ovelap over the slider, and the number of metal ball-retainers in the slider

Summary

Introduction

Determing the quality of dining tables according to the EN norms, shows that horizontal fatigue is one of the most important factors of durability. The stength and durability of fixed tables are influenced by the following factors: table size, conecting solution between rails and table top, and the way of connecting legs to the underconstruction. If the main board is connected to the understructure in the propprer way, the source of the problem can only be a connection of the leg and rails. In this case, the stength and durability of the table will be influenced by the choice of corner brackets, as well as factors that affect the withdrawal strengths of the screws

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