Thermal cycling and environmental effect on tensile behavior of adhesive single lap joints for fiber metal laminate

In this paper the effects of sea water and thermal cycling conditions on tensile behavior of adhesive lap joints made for fiber metal laminate (FML) and 430 stainless steel adherends are investigated under tensile loading condition. The FMLs (three and five layers) were fabricated using 430 stainless steel sheets and fiberglass prepreg layers. The joints are kept in the sea water taken for 30 days in the laboratory. Some of the specimens are then thermally cycled in an oven (5 & 10 cycles, 40/100 ◦C, dwell time 20 min) and also the others are kept in liquid N2 (5 & 10 cycles, -40/-100 ◦C, dwell time 10 min), and afterwards tested. It was shown that the bond failure of Adhesive lap joint that face to sea water was less than of the same in ambient environment and they improved by 5 & 10 high thermal cycling but strength of lap joint decreased at cryogenic temperatures with respect to sea water at 0 thermal cycling and ambient temperature.