Lap shear tests on adhesive bonds of historic iron and mild steel

Putty has been used for ages to seal the connection between glass plates and glazing bars in window frames or iron and glass roofs. Nowadays, when renovating historic buildings, adhesive bonding can be applied to connect glass to steel. This article examines the magnitude of the stresses that can be transmitted from glass panels to historic iron, when modern adhesive bonding is used. Experiments on single-lap joints were carried out to determine the influence of the substrate roughness and treatment (paint layer) on the shear strength. The substrates used in the lap shear tests are modern construction steel and 19th century mild steel. They were bonded with an MS polymer adhesive. A zinc-phosphate epoxy paint was applied on some of the 19th century mild steel samples.
The experiments demonstrated that the average shear strength increased with increasing surface roughness. However, this influence is small.

Jaar van publicatie:2011

Trefwoorden:adhesion, historic iron, lap shear, bonding

Toegankelijkheid:Open