Materials, Properties and Design

· Toughness and Resilience are two other quantities that characterize mechanical response.
· Toughness is the total area under the stress-strain curve to fracture. Resilience is the area under the stress-strain curve to the yield stress
· The diagram indicates that ductile materials are tougher than brittle materials.
· Both Ductile and Brittle behavior may be exhibited by the same material, but in different temperature ranges or at different deformation rates.

From: Callister,
"Materials Science and Engineering,"
Wiley (1997)