SPECIAL PROCESSES – BONDING PROCESS – Chapter Four
Qualification of the bonded joint.
This activity is part of the whole bonding process is essential to validate all activities.
For this qualification must be properly planned and performed in accordance with regulations applicable specifications.
It is usually carried out by a third party, in order to ensure proper compliance of course, including the repetitiveness of the qualification itself.
The qualification includes:
The definition and planning of all tests required for qualification of the joint, through the preparation of a specific plan “evidence”, which is part of the coordination process (ref. Special processes – bonding process – Chapter Three) and must be included as a binding phase and Plan Manufacturing and Control of the process.
For this purpose, we quote below for information, some standards to be used in joints by means of adhesives:
EN 923 Adhesives – Terms and definitions
UNI EN ISO 10365 Adhesives – Designation of main types of failure.
UNI EN ISO 9142 Adhesives – Guide to the selection of standardized laboratory conditions for aging tests of bonded joints.
UNI EN 473 Non-destructive testing – Qualification and certification of personnel involved in non-destructive testing – General principles.
The definition and preparation of appropriate test procedures in accordance with applicable regulations, including the acceptable values;
For this purpose, we quote below for information, some standards to be used in joints by means of adhesives:
UNI EN 205 Adhesives – Adhesives for wood for non-structural applications – Determination of resistance to shear strength of bonding overlap
UNI EN 1465 Adhesives – Determination of resistance to shear strength of substrates bonded assemblies.
UNI EN 14869 Structural adhesives – Determination of shear behavior of structural adhesives – Part 2: Test method for cutting thick samples.
The performance of the tests at the laboratory of the Third part have suitable qualifications and / or credits.
The provision of special reports attesting to pass the tests in accordance with acceptable values.
All income above shall be recorded and included into the project to implement the joint.
The positive outcome of qualifying, let you continue with the activities of production and industrialization gel bonded joint.
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