Practice Key Terms (4.1) - Failure Theories - Machine Element and System Design
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Key Terms

Practice - Key Terms

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Practice Questions

Test your understanding with targeted questions

Question 1 Easy

What is the main principle of the Maximum Normal Stress Theory?

💡 Hint: Think of stress limits.

Question 2 Easy

Define Factor of Safety.

💡 Hint: What does safety mean in terms of design?

4 more questions available

Interactive Quizzes

Quick quizzes to reinforce your learning

Question 1

What happens when the maximum principal stress reaches yield strength?

True
False

💡 Hint: Remember the conditions for failure.

Question 2

Which theory is most suitable for predicting failure in ductile materials?

A) Maximum Normal Stress Theory
B) Maximum Shear Stress Theory
C) Distortion Energy Theory

💡 Hint: Consider the material type.

3 more questions available

Challenge Problems

Push your limits with advanced challenges

Challenge 1 Hard

A beam with a hole is subjected to bending forces. Calculate the SCF if the nominal stress is 50 MPa and the maximum stress at the hole is 100 MPa.

💡 Hint: Use the SCF formula.

Challenge 2 Hard

Design a spring that will endure cyclic loads below its endurance limit. Given a yield strength of 200 MPa, suggest an endurance limit of 80 MPa. Justify your reasoning.

💡 Hint: Consider loading limits when designing for fatigue.

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Reference links

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