Coherent Fiber-Optic Sensor for Ultra-Acoustic Crack Emissions

Coherent Fiber-Optic Sensor for Ultra-Acoustic Crack Emissions

A coherent optical fiber sensor with adequate sensitivity for detecting the acoustic emission (AE) during the propagation of a crack in a ferrous material is presented. The proposed fiber optic sensor is successfully compared in terms of the SNR (Signal to Noise Ratio) and detectable AE energy level...

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Bibliographic Details
Main Authors: Ilaria Di Luch, Maddalena Ferrario, Davide Fumagalli, Michele Carboni, Mario Martinelli
Format: Article
Language:English
Published: MDPI AG 2021-07-01
Series:Sensors
Subjects:
fiber optic sensor
guided waves
acoustic emission
fatigue crack propagation
Online Access:https://www.mdpi.com/1424-8220/21/14/4674
Description
Summary:A coherent optical fiber sensor with adequate sensitivity for detecting the acoustic emission (AE) during the propagation of a crack in a ferrous material is presented. The proposed fiber optic sensor is successfully compared in terms of the SNR (Signal to Noise Ratio) and detectable AE energy levels to commercially available AE piezo-transducers sensors and is proven to be an effective and advantageous alternative for sensing and monitoring fatigue damage in structural applications.
ISSN:1424-8220

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