Behavior of Deep Flaws in a Thick-Wall Cylinder under Thermal Shock Loading

摘要

Behavior of inner-surface flaws in thick-walled vessels was studied in a 991-mm OD x 152 mm wall x 1220 mm length cylinder with toughness properties similar to those for HSST Plate. The initial temperature of 93 exp 0 C and a thermal shock medium of liquid nitrogen (-197 exp 0 C) were employed. The initial flaw selected was a sharp, 16 mm deep, long (1220 mm) axial crack. Crack arrest methodology was shown to be valid for deep flaws under severe thermal shock. (ERA citation 05:008528)