Practice Failure Criteria (4.2) - Failure Theories - Machine Element and System Design
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Failure Criteria

Practice - Failure Criteria

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Practice Questions

Test your understanding with targeted questions

Question 1 Easy

What does the Maximum Normal Stress Theory indicate?

💡 Hint: Think about the conditions under which brittle materials fail.

Question 2 Easy

Define Factor of Safety.

💡 Hint: It ensures designs remain within safe limits.

4 more questions available

Interactive Quizzes

Quick quizzes to reinforce your learning

Question 1

Under what condition does failure occur according to the Maximum Normal Stress Theory?

When shear stress exceeds yield strength
When maximum principal stress exceeds yield stress
When alternating stress is below yield strength

💡 Hint: Think about the definitions of stress types.

Question 2

True or False: Fatigue failure can occur even when stresses are below the yield strength.

True
False

💡 Hint: Consider the nature of fatigue in materials.

2 more questions available

Challenge Problems

Push your limits with advanced challenges

Challenge 1 Hard

A cylindrical rod faces an axial load of 40 kN. Its yield strength is 250 MPa. Determine if the rod will fail using the Maximum Normal Stress Theory and discuss factors to consider for safety.

💡 Hint: Use the formula: Stress = Force / Area.

Challenge 2 Hard

Design a simple experiment to evaluate the endurances of two different materials under a fluctuating load scenario. Discuss how you will ascertain their Fatigue Failure criteria.

💡 Hint: Consider using strain gauges for accurate measurements.

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Reference links

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