Mechanical joints are connections between two or more components that allow for movement or flexibility while maintaining structural integrity. These joints can be found in various applications, such as in machinery, vehicles, and buildings. Common types include bolted joints, welded joints, and riveted joints, each serving specific purposes based on the materials and forces involved. The design of mechanical joints is crucial for ensuring safety and performance. Properly engineered joints can withstand loads, vibrations, and environmental factors. Engineers often consider factors like material properties, joint geometry, and load conditions to optimize the strength and durability of these connections.