What does "dimpling" refer to in sheet metal work?

Dimpling in sheet metal work specifically refers to the creation of indents in the surface of the metal. This process is crucial for easing the installation of fasteners, such as rivets, by allowing them to seat properly within the material. The dimples create a uniform surface which enhances the strength of the joint by distributing loads more evenly and minimizing stress concentrations.

This technique helps ensure that fasteners can be installed without interference, reducing potential issues like misalignment that could compromise the integrity of the assembly. Furthermore, dimpling can improve the overall performance and lifespan of metal joints, making it an essential procedure in various manufacturing and assembly applications within the aviation industry and beyond.