Failure Mechanisms

· A mode of void coalescence in a sample is illustrated. Voids act as stress concentrators. When the void length (2h) is on the order of the void separation they can join by micro-rupture of the inter-void material.
· Void coalescence becomes easier as the inter-void spacing decreases (i.e. the inclusion density increases).

From: Courtney, "Mechanical Behavior of Materials," McGraw Hill (1990)