👉 Stiffening is a process in which materials are strengthened by applying pressure or force to increase their strength. This can be achieved through various methods, such as adding reinforcement fibers, coatings, or other additives. Examples of stiffer materials include steel, aluminum, and ceramics. For example, steel is often used in structural applications due to its high strength-to-weight ratio, while aluminum is commonly used for automotive parts because of its lightweight and corrosion-resistant properties. Stiffening can also be achieved through mechanical