Concept
Fracture — where it appears
2 essays name this object, across one field. What follows is each of them, and the objects they name alongside it.
The flaw that sets the strength
A member with a crack twenty millimetres long fails at its yield stress. Make the steel stronger and the crack that does it gets shorter, so the same flaw that was harmless in the weaker grade decides the stronger one.
The hole that multiplies the stress by three
The stress at the side of a hole is three times the applied stress whatever the hole's size, and at the top and bottom of the same hole it is minus one times it — compression in a plate that nothing is pushing.
Named alongside it
The objects these essays reach for when they reach for this one.
DuctilityStress concentrationBrittle fractureCritical crackElasticityFatigueFracture toughnessGriffithKirschNet sectionRedistributionSaint-Venant's principle