Abstract

Total Focusing Method has emerged in recent years as alternative to standard phased array inspection methods due to its high resolution and the realistic images of defects it provides. In case of crack-like defects, it provides images where the profile and the tips of the defects are reconstructed using relevant ultrasonic paths, also called reconstruction modes. Such realistic image may allow easy interpretation and stronger diagnostic. However, correct image reconstruction requires to use relevant ultrasonic paths among many possibilities that can produces artefacts. In this article, we present a method we developed to predict relevant paths for a realistic TFM image of crack-like defects nearby welds. Validation is achieved on simulated and experimental results. Specimens with realistic defects are inspected with a new acquisition system, Panther, applying real time TFM imaging with selected modes of reconstruction.

How to Cite:

SY, K. . & Roy, O. ., (2019) “Prediction of TFM mode for realistic defect imaging”, Review of Progress in Quantitative Nondestructive Evaluation .