3rd prize in 2025

Application of Elastic Reverse Time Migration to Ultrasonic Echo Data in Civil Engineering

Dr. Maria Grohmann
RWTH Aachen University, Neotectonics and Georisks

Dr. Maria Grohmann from RWTH Aachen University (Neotectonics and Georisks) was awarded third place in the ABC/J Research Prize for Early Career Scientists for her pioneering work in applying geophysical imaging methods to non-destructive testing (NDT) in civil engineering.

Her research adapts the Elastic Reverse Time Migration (RTM) technique—commonly used in geophysics—for ultrasonic echo data to image complex features in concrete structures. Compared to standard techniques like Synthetic Aperture Focusing Technique (SAFT), RTM provides a more accurate representation of features such as vertical or hidden reflectors. Tests on both synthetic models and real concrete specimens showed RTM's superior imaging capability, especially for mapping tendon ducts and structural boundaries. This work represents a significant advancement in ultrasonic NDT, supporting the safety and durability of critical infrastructure.