The Stress-Life Method is a technique used in engineering to predict the fatigue life of materials and components. It involves analyzing the relationship between the applied stress and the number of cycles a material can endure before failure. This method is particularly useful for materials subjected to repeated loading, such as in mechanical and structural applications. In this approach, a material's fatigue strength is determined through experiments, often represented in a S-N curve, which plots stress (S) against the number of cycles to failure (N). Engineers use this data to design components that can withstand specific loading conditions over their intended lifespan, ensuring safety and reliability in applications like automobiles and aerospace.