Print Email Facebook Twitter Developing a new acoustic emission source classification criterion for concrete structures based on signal parameters Title Developing a new acoustic emission source classification criterion for concrete structures based on signal parameters Author Zhang, F. (TU Delft Concrete Structures) Yang, Y. (TU Delft Concrete Structures) Fennis, Sonja A.A.M. (Ministry of Infrastructure and the Environment) Hendriks, M.A.N. (TU Delft Concrete Structures; Norwegian University of Science and Technology (NTNU)) Date 2022 Abstract Acoustic emission (AE) signal parameters can be used to classify the source type in concrete structures. However, signal parameters are influenced by the wave propagation from the source to the receiver, leading to wrong source classification results, especially for monitoring large concrete structures. This paper experimentally evaluates the influence of wave travel distance on signal parameters on a full-scale shear test of a reinforced concrete beam. The evaluated signal parameters include the RA value, average frequency, peak frequency, frequency centroid, and partial power. The evaluation reveals the limitation of using RA value - average frequency trends in large scale structural concrete members. Based on the evaluation, we propose a new source classification criterion using peak frequency or partial power, which can effectively classify the source type. The new criterion is also validated in a reinforced concrete slab test, which is another structural type. Based on the new criterion, we suggest a sensor layout that is suitable for source classification for large concrete structures. The results of this paper can help developing a reliable solution for real-time source classification for large concrete structures in general. Subject Acoustic emission source classificationConcrete structuresConcrete tensile crackingFrictionSignal parametersWave propagation in concrete To reference this document use: http://resolver.tudelft.nl/uuid:70518569-822f-498f-b95e-9fc160329f54 DOI https://doi.org/10.1016/j.conbuildmat.2021.126163 ISSN 0950-0618 Source Construction and Building Materials, 318 Part of collection Institutional Repository Document type journal article Rights © 2022 F. Zhang, Y. Yang, Sonja A.A.M. Fennis, M.A.N. Hendriks Files PDF 1_s2.0_S0950061821038952_main.pdf 7.2 MB Close viewer /islandora/object/uuid:70518569-822f-498f-b95e-9fc160329f54/datastream/OBJ/view