Certified Welding Inspector Practice Exam

What is an adhesive bond?

1. An attraction primarily caused by chemical reactions

2. A physical attraction between adhesive and base materials

3. A mechanical connection between two materials

4. A form of heat fusion between components

The correct answer is: A physical attraction between adhesive and base materials

An adhesive bond is characterized by a physical attraction between the adhesive and the base materials to which it is applied. This interaction is crucial for the effectiveness of adhesive bonds, as it requires proper surface preparation and application techniques to ensure that the adhesive can properly interact with the materials involved. The strength of this bond largely depends on factors such as surface energy, cleanliness, and adherence to the manufacturer's guidelines for the adhesive. The process typically does not rely heavily on chemical reactions or mechanical connections, but rather on the physical properties of the adhesive as it interacts with the surface of the materials. While other types of connections like mechanical bonding or heat fusion may be effective in certain applications, they do not fall under the definition of an adhesive bond. The distinguishing characteristic here is the emphasis on the physical attraction created at the interface of the adhesive and the substrates being bonded.