Component Level Uncertainty Quantification of Thickness Estimations Computed from Full-Field Ultrasonic Inspection

Abstract

This work performs a case study on the error and uncertainty of thickness estimations derived from acoustic steady-state excitation spatial spectroscopy (ASSESS) – a full-field ultrasonic inspection technique that can be utilized for structural health monitoring applications. Thickness estimation was performed using a 40 kHz excitation frequency on 0.2 m x 0.2 m steel plates ranging in thickness between 1.55 mm and 19.14 mm. The experimental thickness estimation results were compared to corresponding analytical results and thickness errors resulting from experimental uncertainties were investigated.