Factors affecting the glue strength of finger joints in commonly used timber species in Sri Lanka.

Abstract

Finger- jointed timber production plays a vital role in furniture industry in the world. However, issues related with the strength of the joints, fixing time, timber species and glue types etc. are not highly investigated in Sri Lanka. This research evaluated the effects of commonly available glue type timber species, and time allowed to fix the joints on the strength of finger joint. The response variables measured for the tension tests. Data ware gathered using Universal Testing Machine. One way ANOVA was carried out each timber species to analyze the data. It was found that the glue type, timber species and time allowed to fix the joints directly affect the glue tensile strength. Furthermore, the highest tensile strength was recorded in Polyvinyl Acetate (PVA) SWR glue with the allocated time period of 4 hours.