Identifying the characteristics of acoustic excitation for structural health monitoring of blisks

Abstract

In this work an integrated testing for a preliminary calibration blisk procedure is presented. The procedure presented is used for the future benefit of the highly efficient and accurate calibration procedure for mistuning identification (ID) in one piece bladed disks (blisks). Mistuning identification is a particular type of structural damage that can be performed with Acoustic Excitation (AE) in testing the Structural Health Monitoring (SHM) of bladed disks. In this paper the linearity of the results of the AE test data analyzed using the scanning laser vibrometer are put under discussion and related to structural damage.