What are the two definitions associated with 'manufactured head' and 'shop head' of a rivet?

The definition of 'manufactured head' and 'shop head' pertains to the physical characteristics of a rivet after it has been installed. The 'manufactured head' refers to the original head shape of the rivet as it comes from the manufacturer. This head is designed to distribute the load and provide a secure fastening point. The 'shop head,' on the other hand, is the deformed head created on the tail side of the rivet during the installation process. This is the result of the riveting process where the tail is upset or bucked to form a head, securing the rivet in place and ensuring a tight fit within the materials being joined.

Understanding these definitions is crucial in aerospace applications since the integrity of riveted joints is vital for structural safety and performance. The specifics of how these heads are formed affect not only the fastening strength but also the aerodynamic qualities of the assembly. Consequently, choosing the correct terminology related to these aspects is essential for accurate communication and technical documentation in aerospace engineering.