Non-Destructive Detection of Pressure Waves Generated in Model Pipeline

Abstract

For effective maintenance and management of pipeline system, it is necessary to evaluate not only the damage of pipe materials but also the detection of pressure waves such as water hammer. In this study, non-destructive inspections of pressure waves are proposed by applying acoustic emission (AE) and image analysis. Thus, pressure waves were detected in the model pipeline system, based on control of valve closing time (0.40-10.48s). The AE behavior of pressure waves were dependent on the degree of maximum pressure scale and could be evaluated applying AE parameter analysis. Using digital image correlation method (DICM), a relationship between maximum pressure level and displacement is correlated. By monitoring the pressure waves in model pipeline based on these results, the generated pressure waves was successfully detected by non-destructive inspection methods.