Modal parameter-based Damage Identification in Cylindrical Pipe using Dynamic Response.

In the present study, a modal parameter-based technique has been presented to identify damage in steel cylindrical pipes under real measurement condition. For this purpose, an analytical formulation has been presented considering radial vibration of the pipe following Prescott’s equation and the relation of its damage with its dynamic properties has been established. The proposed approach and its efficacy have been numerically illustrated and localization as well as comparative quantification of severity of damage has been performed. The difference of modal parameters between the damaged and undamaged cross section of pipe successfully identifies the location of damage. In laboratory environment, specimens of pipes with various anomalies have been introduced to replicate various damage scenarios. Changes in frequency have been observed and tabulated. Ongoing experiments aim to observe similar outputs for different damage conditions. The accuracy of final methodology will rely on accurate extraction of modal parameters of the specimens. [ABSTRACT FROM AUTHOR]