The Effect of Adhesive Types and Dovetail Fitting Height on Stress Carrying Capacity of Miter Frame Corner Joints Constructed of Particleboard and Medium Density Fiberboard (MDF)

This study was conducted to evaluate stress carrying capacity of miter corner joints fabricated with dovetail fitting in frames made with particleboard and medium density fiber board (MDF) under diagonal tension loading. In this study، tests were carried out to determine the effects of dovetail fitting height (9 and 14 mm)، and adhesive types (polyvinyl acetate (PVAs)، cyanoacrylate (CA) on stress carrying capacity of dovetail joints under diagonal tension loading، and the joints without adhesive were compared. The results indicate that stress carrying capacity has increased، with the increase of high dovetail. The stress carrying capacity of joints constructed with CA adhesive was higher than that of those constructed with PVAs and without adhesive. Furthermore، the stress carrying capacity joints constructed with MDF was higher than that of those of particleboard. The lowest ultimate stress carrying capacities (2. 61Mpa) were obtained at 9 mm high dovetail of dovetail joints made of particleboard and without adhesive. Highest bending moment resistance (8. 61Mpa) was observed at 14 mm high dovetail with CA adhesive in medium density fiberboard.