Скачать или смотреть Why Do Machine Parts Fail? Failure Theories You Should Know | Machine Design - Lecture 5

In this video, we kick off Module 2 of the Machine Design course with an introduction to failure prevention. We’ll look at how and why machine components fail under different types of loading—static vs. variable (fatigue)—and explore the fundamental differences between ductile and brittle failure.

You’ll also learn how to navigate commonly used failure theories for static loading, including:

✅ Maximum Normal Stress (MNS) theory
✅ Maximum Shear Stress (MSS) theory
✅ Distortion Energy (DE) theory (the foundation for von Mises stresses)
We wrap up by building a failure theory flowchart that helps guide engineering decisions based on loading conditions and material behavior.

Timestamps
00:00 - Introduction
02:16 - Static vs. variable loading
03:46 - Ductile vs. brittle material behavior
06:58 - Building the flowchart
11:45 - Wrap up

📌 Whether you're a student or practicing engineer, this module lays the groundwork for designing components that don’t just work—but last.

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