Tension Estimation in Anchor Rods Using Multimodal Ultrasonic Guided Waves
Year: 2025
Type: article
Abstract: (EDF) structures. These rods are critical for the mechanical strength of structures and electromechanical components. Currently, the standard method for estimating the effective tension of post-stressed tie rods with a free length involves measuring the residual force using a hydraulic jack. However, this method can be costly, impact the structure's operation, and pose risks to employees. Until now, there has been no reliable on-field approach to estimating residual tension using a lightweight setup. This research introduces a nondestructive method using multimodal ultrasonic guided waves to evaluate the residual tension of anchor rods with a few centimeters free at one end. The methodology was developed through both laboratory experiments and simulations. This new method allows for the extraction of dispersion curves for the first three modes, bending, torsional, and longitudinal, using time-frequency analysis and enables the estimation of the steel bar's properties. Future work will focus on applying this methodology in the field.
Source: Sensors
DOI: 10.3390/s25061665
Authors: Thilakson Raveendran, Frédéric Taillade
Institution: Électricité de France (France)
Language: English
Subfield: Mechanics of Materials
Field: Engineering
Domain: Physical Sciences
Open Access status: gold
Estimated APC paid: $3,137
OpenAlex ID: W4408167748