Fatigue and fracture characteristics of aluminum alloy cylinders under internal pressure

This paper presents the results of tensile, plane-strain fracture-toughness, and fatigue evaluations of die forged and premium cast hydraulic cylinders of six high strength aluminum alloys. Comparisons are made of fatigue strengths at stress levels related to design values, and of relations between values of K_Ic and the conditions under which unstable crack growth was observed in the fatigue tests.