Real time extraction of TOA from overlapped AE waves

Avik Kumar Das, Christopher K.Y. Leung

Research output: Chapter in Book/Conference Proceeding/ReportConference Paper published in a bookpeer-review

Abstract

Time of Arrival (TOA) detection is essential successful Acoustic Emission (AE) based structural health monitoring (SHM) system. During high burst rate results AE waves could overlap. AE waves shows similar narrowband, low frequency content thus overlapping of AE waves leads to overlap in both in time and frequency. As a result, the TOA information is lost in the coda of the previous wave and cannot be (reliably) detected by conventional techniques. In this paper, the problem was addressed through creation of a) Wave (Overlapping) Identification (WI) b) Wave Cleaning (WC) c) Arrival Detection (AD) approaches. In this paper, specifically the Wave Detection and Wave Cleaning approaches are introduced and described in detail. 3D Fingerprinting is meticulously designed to exploit wave arrival characteristics thus autogenously identifying the overlapping of waves for completing the WI system. Positive identification activates Wave Cleaning system which eradicates the influence of the Intersecting Wave using adaptive spectral subtraction (ASpS). Post removal of the TOA for the Intersected Wave was identified.

Original languageEnglish
Title of host publicationStructural Health Monitoring 2019
Subtitle of host publicationEnabling Intelligent Life-Cycle Health Management for Industry Internet of Things (IIOT) - Proceedings of the 12th International Workshop on Structural Health Monitoring
EditorsFu-Kuo Chang, Alfredo Guemes, Fotis Kopsaftopoulos
PublisherDEStech Publications Inc.
Pages57-64
Number of pages8
ISBN (Electronic)9781605956015
DOIs
Publication statusPublished - 2019
Event12th International Workshop on Structural Health Monitoring: Enabling Intelligent Life-Cycle Health Management for Industry Internet of Things (IIOT), IWSHM 2019 - Stanford, United States
Duration: 10 Sept 201912 Sept 2019

Publication series

NameStructural Health Monitoring 2019: Enabling Intelligent Life-Cycle Health Management for Industry Internet of Things (IIOT) - Proceedings of the 12th International Workshop on Structural Health Monitoring
Volume1

Conference

Conference12th International Workshop on Structural Health Monitoring: Enabling Intelligent Life-Cycle Health Management for Industry Internet of Things (IIOT), IWSHM 2019
Country/TerritoryUnited States
CityStanford
Period10/09/1912/09/19

Bibliographical note

Publisher Copyright:
© International Workshop on Structural Health Monitoring. All rights reserved.

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