Mechanical testing is a process used to evaluate the physical properties of materials, such as metals, plastics, and composites. This testing helps determine how materials will behave under various conditions, including tension, compression, and impact. Common tests include tensile testing, hardness testing, and fatigue testing, which provide valuable data for engineers and manufacturers. The results from mechanical testing are crucial for quality control and material selection in industries like construction, automotive, and aerospace. By understanding a material's strength, ductility, and toughness, engineers can design safer and more efficient products that meet specific performance requirements.