DNV GL MATERIALS AND WELDING II-2-3 PDF

General

1. Parts and components of metal, plastic and other materials may be bonded using elastomeric adhesives. The requirements concerning fire protection shall always be clarified for each individual case.

2. Elastomeric adhesive joints within the sense of this Guideline are adhesive joints which, in the tensile lap shear test, can endure a shear angle of more than 100 % statically for a brief period at room temperature. Therefore an elastomeric adhesive is used which possesses elastomeric properties in the cured state.

3. Elastomeric adhesives do not offer any permanent protection against corrosion.

4. The adhesives and the surface treatment of the bonding surfaces may not adversely affect the material properties of the parts to be joined, i.e. the function of the parts after joining and the bonded joint itself shall not be impaired.

5. Depending upon the application, the adhesives shall exhibit a high durability, e. g. resistance against moisture (including seawater), acids, alkalis, fuel, oil, grease and UV radiation.

6. It must be possible to use the adhesives permanently within the temperature range from – 20 °C to + 60 °C.

7. For the elastic bonding of structural components and components which are integrated into the structure, only adhesives approved by Germanischer Lloyd (GL) shall be used. 8. The field of application of this Guideline is limited to the bonding of structural components and load-bearing components which are integrated into the structure, as well as components of relevance to ship safety. Depending on the area of application, an adhesive approval according to class A or class B will be required.