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During the design, fabrication and modification of ships and offshore structures there are innumerable joining tasks to assemble the structure and to install equipment.The vast majority will be done using welding and perhaps some other mechanical joining process such as bolting or riveting. However, there are situations where these joining processes are not the best option. Typically this is for the assembly of lightweight structures based on thin materials or material combinations such as composite and steel that cannot be welded. However, to be successful, adhesively bonded connections not only need to have sufficient mechanical strength and long-term performance, but they first and foremost have to be economically viable. What do we mean by 'adhesive'? According to Adams et al (1997). 'an adhesive can be defined as a polymeric material which, when applied to surfaces, can join them together and resist separation4. Adams and co-workers describe structural adhesives fcas one used when the load required to cause separation is substantial such that the adhesive provides for the major strength and stiffness of the structure'. The structural members of the joint, which are joined together by the adhesive, are the adherends. Adhesion as such is used widely on marine structures.
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