Experimental deformation analysis of an adhesively bonded multi‐material joint for marine applications

The strength and deformation of full-scale adhesively bonded multi-material joints is studied in this paper. Four with a thick layer methyl methacrylate adhesive (MMA) have been manufactured shipyard conditions. In two specimens, cracks introduced at steel–adhesive composite–adhesive interfaces. One cracked one un-cracked specimen were subjected to quasi-static tensile testing; the remaining specimens stepwise loaded/unloaded increasing load until failure. strain layers was measured digital image correlation (DIC). This showed predominant shear dissimilar patterns for different bond lines. Fibre Bragg (FBG) sensors used monitor strains steel composite constituents detect onset evolution damage specimen. Strains by FBG correspond well DIC results nearby regions. All failed delamination panel near interface.