M7 Analysis QuestionsExplain why "actual" mechanical strength of components or systems as seen in real customer usage is less than the theoretical strength? (page 207 in the textbook) Give a technically correct explanation suitable for a non-technical person.

Explain what a fatigue failure is. Then explain how "fail-safe" and "safe-life" approaches are used to design against fatigue failures.

Describe three types of "wear" processes that can lead to failure of surfaces in moving contact. Describe how each of these wear types can be minimized by designers.