Reliability in Engineering Design | Module 6.1: Material Degradation and Time to Failure | Purdue скачать в хорошем качестве

Reliability in Engineering Design | Module 6.1: Material Degradation and Time to Failure | Purdue

What is material degradation, and why is it important to consider in engineering design? In this video, Purdue University's James G. Dwyer Professor of Mechanical Engineering, Ganesh Subbarayan, discusses why understanding and modeling material degradation is essential. As he explains, degradation is a natural consequence of the second law of thermodynamics: energy dissipates in a system, increasing its entropy. This process results in various types of degradation such as creep, fatigue, and oxidation. Prof. Subbarayan illustrates the "bathtub curve," which depicts the three life phases of engineered products and their associated failure rates. Lastly, we discuss a power low model for characterizing these rates and defining a degradation rate.