Abstract: Acrylic plastic spherical shell sector windows with 117-deg included angle and outside radius of 24-in. (61 mm), have been impacted at their center, with a 12,500 lb (5662 kg) weight, in a ...

Abstract: An improved fracture mechanics model for fatigue crack growth in welded tubular joints is developed. Primary improvements include the use of a wide-ranged equation for the fatigue crack growth ...

Abstract: Exploratory investigation into the structural performance of acrylic plastic plane disk windows with twin conical bearing surfaces has shown that such windows behave under hydrostatic loading ...