Failure - Chapter 10

Question 1

Simple Fracture

Answer 1

Separation of a body into two or more pieces in response to an imposed stress that is static

Question 2

Two steps of fracture?

Answer 2

Crack formation and propagation

Question 3

Stable crack?

Answer 3

A crack that resists any further extension unless there is an increase in applied stress.

Question 4

Unstable crack?

Answer 4

Once started, continues spontaneously without an increase in applied stress.

Question 5

Why is ductile fracture preferred over brittle fracture?

Answer 5

Ductile is noticeable before failure occurs, however brittle fracture occurs suddenly and catastrophically without warning.