Experimental study on repair of cracked pipe under internal pressure

Abstract

Repair of cracked pipeline under internal pressure (IP) was investigated in the current work. To such aim, the test the experiment has been done on the cracked pipeline to find failure pressure (FP). A longitudinal crack that cut 65% thickness of pipe has been applied on the external surface. The reinforced polymer C fibre has been utilized for repairing the system. Additionally, a model of finite element has been established to estimate the unrepaired pipes FP. The results show that the FP in unrepaired pipes is identical to the FP predicted by the standards for corroded pipes; however, the FP of repaired system is lower than the predicted results of standard for corroded pipelines.