Mechanics of Materials: Lesson 16 - Fatigue and Creep Failures with S-N Diagram

Summary

This video explores two important material failure modes: creep and fatigue. Creep is defined as the slow, time-dependent deformation of materials under constant load below their yield strength, exemplified by children's putty and glass sagging in high temperatures. In contrast, fatigue involves the cyclical loading of materials, leading to failure after repeated stress cycles, illustrated by common items like soda cans and Ethernet cables. The S-N diagram is introduced as a tool to predict the life cycle of materials under stress, emphasizing the importance of understanding these failure mechanisms in engineering and material design.

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