Rupture testing method for boiler tubes

Abstract From the Canadian patent

Abstract of Disclosure, Disclosed is a method of determining the remaining creep life of metallic boiler tubes which comprises the steps of selecting a section of the boiler tube to be tested, inserting two segments into the tube section, which segments together form a disc having an outside diameter slightly less than the inside diameter of the tube section; exerting two oppositely directed forces on the segments to separate the segments against the wall of the tube section, the forces being selected to simulate the hoop stress applied to the tube section due to internal pressure; and maintaining the application of the oppositely directed forces until the tube section ruptures, wherein the …