Anti-flutter bonding

Typical uses of adhesives in the body shop are hem flange bonding, anti-flutter bonding, and hybrid joining. 

On top of these general requirements, adhesives need additional very specific profiles depending on if they are used for bonding of the structure, for anti-flutter bonding, or for hem flange bonding. 

What is the real strength required for structural bonding This central question cannot be answered in a simple way. The most important property is not the lap shear strength but the G-modulus or E-modulus, which can be used in calculations for the stiffness of a bonded structure. The bonding of a sun roof lid gives an idea about this effect. In this example, the lid is bent as shown in O Pig. 46.7 with a force of up to 500 N, and depending on the modulus of the anti-flutter and hem flange adhesive, the deformation is measured and calculated. 

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