The energy absorbed by a notched test bar of a ductile material under impact load is commonly called ________

The energy absorbed by a notched test bar of a ductile material under

1.	The energy absorbed by a notched test bar of a ductile material under impact load is commonly called ________
A.	Static toughness
B.	Impact strength
C.	Notch-bar toughness
D.	Fracture energy
Answer» D. Fracture energy