Improved Accuracy of Damage Index Evaluation in Concrete Structures by Simultaneous Hardware Triggering

Author:

Lamonaca Francesco,Carrozzini Antonio,Grimaldi Domenico,Olivito Renato Sante

Abstract

Abstract Non-invasive damage monitoring of concrete structures by means of Acoustic Emission (AE) requires multitransducers, multi-channel acquisition, high sampling frequency and long observation time. Owing to its propagation in concrete, the signal from AE reduces its amplitude during the propagation, and, consequently, some events can be lost due to lower signal intensity than the trigger level set on one sensor only. The innovative proposal discussed in the paper consists in the introduction of a Flat Amplifier and Trigger generator block (FAT) in order to generate a logical trigger when the AE is detected by any transducer. Experimental tests confirm the effectiveness of the FAT to acquire all the AE events and to increase the evaluation accuracy of damage indexes.

Publisher

Walter de Gruyter GmbH

Subject

Instrumentation,Control and Systems Engineering

Cited by 2 articles. 订阅此论文施引文献 订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献

1. Structural Health Monitoring Systems: an Overview;2022 IEEE International Workshop on Metrology for Living Environment (MetroLivEn);2022-05-25

2. Implementation of Information Entropy, b-Value, and Regression Analyses for Temporal Evaluation of Acoustic Emission Data Recorded during ASR Cracking;Practice Periodical on Structural Design and Construction;2021-02

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