Fiber optic acoustic emission shm system for condition management of aircraft structures

Edgar Mendoza, John Prohaska, Connie Kempen, Yan Esterkin, Sunjian Sun, Sridhar Krishnaswamy

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Acoustic emission is the leading structural health monitoring technique use for the early warning detection of structural damage in advanced aircraft structures associated with impacts, fatigue, cracks, fractures, corrosion, and delaminations. This paper describes progress towards the development and testing of a distributed fiber optic acoustic emission sensor (FAESense™) system based on the use of a novel adaptive and dynamic reconfigurable two-wave mixing (TWM) interferometer produced on a photonic integrated circuit (PIC) microchip. The FAESense system uses a distributed array of miniature and minimally invasive fiber Bragg grating sensors, embedded or surface mounted on a composite or metal aircraft structure, used for the detection and localization of acoustic emission events associated with structural damage. The FAESense system process data in the time domain and frequency domain in real time enabling the detection of acoustic emission events in the presence of unwanted noise. The TWM interferometer interrogates the status of the array of FBG sensors and demodulates the small wavelength shifts of the FBG sensors associated with the detection of acoustic emission waves in the presence of quasi-static strain and temperature variation effects. The FAESense™ system represents a new, robust and reliable, technology for potential use in structural health monitoring applications in aviation and aerospace, civil engineering, oil and gas, renewable energy, biomedicine, and security.

Original languageEnglish (US)
Title of host publicationSAMPE Baltimore 2015 Conference and Exhibition
PublisherSoc. for the Advancement of Material and Process Engineering
Volume2015-January
ISBN (Electronic)9781934551196
StatePublished - Jan 1 2015
EventSAMPE Baltimore 2015 Conference and Exhibition - Baltimore, United States
Duration: May 18 2015May 21 2015

Other

OtherSAMPE Baltimore 2015 Conference and Exhibition
Country/TerritoryUnited States
CityBaltimore
Period5/18/155/21/15

ASJC Scopus subject areas

  • Mechanical Engineering
  • Mechanics of Materials
  • Materials Science(all)

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