Sociedad Española de Integridad Estructural
Grupo Español de Fractura

Sociedad Española de Integridad Estructural
Grupo Español de Fractura

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Gary Savage        

Anales de la Mecánica de la Fractura, nº 22 . 2005 . Pág. -
Ver (.pdf): 45

Resumen: Adhesive bonding is a particularly effective method of assembling complex structures, especially those made from different materials. Provided the joint is well designed, the adhesive bond ought to be one of the strongest aspects of the structure and most certainly should not be the life limiting factor. This of course pre-supposes that the joint has been correctly executed. The major factors determining the integrity of an adhesive bond are selection of the most appropriate adhesive, joint design, preparation of the bonding surfaces and strict quality control in production and condition monitoring in service. Adhesives have become increasingly important in assembling many of the multi-material structures which make up a contemporary Formula 1 racing car. Structural fibre reinforced composite materials were introduced into Formula 1 motor racing in 1980. Since that time the cars have become increasingly dependent on these materials such that a contemporary chassis may consist of up to 80% by weight of carbon fire reinforced epoxy resins and the appropriate adhesives to facilitate fabrication. One might argue therefore that a modern Formula 1 chassis consists of a series of “plastic” mouldings held together with glue! Many of these structures are very highly stressed and required to operate in aggressive environments, particularly high temperatures. The consequences of failure of “Class A” structures can be catastrophic to the operation of the vehicle and impinge on the safety of the driver. Although increasingly better understood, the science and engineering of adhesives is very much in its infancy. Consequently the design and operation of bonded components tends to be a constantly evolving, semi-quantitative process combining fracture and finite element analysis with practical experience. BAR have been particularly adept in the exploitation of adhesives over recent years. The process of “total quality management” (TQM) encompasses the whole operation from R&D and design through materials procurement, component manufacture and condition monitoring to ensure successful exploitation up to the point of withdrawal from service.


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