Which of the following are the two types of blind rivets?

The correct identification of the two types of blind rivets refers to mechanical lock and friction lock rivets. Blind rivets are designed for situations where only one side of the assembly is accessible, which is where these two categories come into play.

Mechanical lock rivets utilize a locking mechanism that creates a strong join when the mandrel is pulled and breaks off. The locking mechanism ensures that the rivet remains secure even under load, making it suitable for applications requiring high strength and durability.

On the other hand, friction lock rivets rely on friction between the rivet and the material to hold the components together. When the mandrel is pulled and breaks off, the distortion of the rivet creates a tight grip against the surrounding materials, resulting in a secure join that is effective in lower-stress applications.

Understanding these two types of blind rivets helps in selecting the appropriate rivet for specific tasks in aviation maintenance, ensuring that structural integrity is maintained throughout various operational conditions. Each type serves its purpose based on the strength needed and environmental considerations in Navy aviation structural mechanics.