KIC (Fracture Toughness)

KIC, or fracture toughness, is a measure of a material's ability to resist crack formation and propagation. It indicates how well a material can withstand stress without failing when a crack is present. High KIC values mean the material is more resistant to breaking, making it suitable for applications where durability is crucial, like in construction or aerospace. Essentially, it helps engineers and designers choose materials that can endure tough conditions without breaking under pressure, ensuring safety and reliability in structures and products.