Work

Time Reverse Modeling of Acoustic Waves for Enhanced Mapping of Cracking Sound Events in Textile Reinforced Concrete

Year: 2024

Type: article

Abstract: Time reverse modeling (TRM) is successfully applied to acoustic signals from a circular microphone array, for mapping of sudden cracking sound events. Numerical feasibility using synthetic acoustic sources followed by an experimental study with steel pendulum impacts on a steel plate is carried out. The mapping results from the numerical and experimental data are compared and verified using a delay-and-sum beamforming technique. Based on the feasibility and experimental study, a mapping error is estimated. In the main experimental study, cracking sound events obtained during a tensile test on a textile-reinforced concrete specimen are mapped with the TRM. The enhanced capability of the TRM to map simultaneously occurring cracking sound events along crack paths is demonstrated.

Source: Journal of Nondestructive Evaluation

DOI: 10.1007/s10921-024-01110-8

Authors: Georg Karl Kocur, Bernd Markert

Institution: RWTH Aachen University

Language: English

Topic: Ultrasonics and Acoustic Wave Propagation

Subfield: Mechanics of Materials

Field: Engineering

Domain: Physical Sciences

Open Access status: hybrid

Estimated APC paid: $3,190

Funders: Eidgenössische Technische Hochschule Zürich, RWTH Aachen University