Final answer:
When a design moves stress from an area of weakness to an area of strength, it is called stress redistribution. This improves the overall strength and durability of the design.
Step-by-step explanation:
When a design moves stress from an area of weakness to an area of strength, it is called stress redistribution. This is often done using techniques such as reinforcement or adding support structures to areas that are prone to weakness. By redistributing the stress, the design can improve its overall strength and durability.