Measurement of Strain Across a Transition Joint Interface Using Moire Fringes

摘要

A Moire fringe method has been used to measure the strain distributions in a plate cut from an English-Electric Mark 3 welded transition joint between 2 1/4 CrlMo and AISI316 heavy section pipes. A cut was sawn along part of the interface between the two materials to simulate a crack and the resulting displacements were measured. The plate was heated to 560 exp 0 C and the strain distribution at temperature was measured. The plate behaviour was also examined by a finite element analysis and the computed results compared with the experimental measurements. (ERA citation 06:033325)