Columbia subject headings:
Airframes--Testing.
Airplanes--Crashworthiness.
Airplanes--Materials--Testing.
Composite materials--Fracture.
Metals--Fracture.
Harvard subject headings:
Princeton subject headings:
Airframes--Testing.
Airplanes--Crashworthiness.
Airplanes--Materials--Testing.
Composite materials--Fracture.
Metals--Fracture.