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<p>This study presents an analysis of Fiber Bragg Grating (FBG) integrated systems for structural health monitoring (SHM) applications. FBG sensors were embedded within aluminium, epoxy, and titanium materials and evaluated through finite element analysis (FEA) simulations and experimental testing. The results show wavelength responses of 1546.9&#xa0;nm to 1550&#xa0;nm for aluminium, 1535.5&#xa0;nm to 1555&#xa0;nm for epoxy, and 1548&#xa0;nm to 1558&#xa0;nm for titanium. Strain variation analysis revealed that aluminium exhibited a moderate increase in strain up to 150&#xa0;MPa across sensor positions 1 to 3, remaining constant thereafter. Epoxy displayed larger strain variations, ranging from 40&#xa0;MPa to 200&#xa0;MPa, while titanium demonstrated the highest strain sensitivity, varying from 30&#xa0;MPa to 200&#xa0;MPa across all sensor positions. The close alignment between experimental and simulation data highlights the effectiveness of FBG sensors for real-time strain monitoring, with titanium showing the greatest sensitivity. Proposed work will be useful for different application in aerospace industries.</p>

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Design and analysis of FBG sensors for monitoring the integrity of metal structures

  • 期刊论文

  • 发表日期：

    2025年3月7日

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  • Soni Gupta,
  • Bhupesh Kumar Singh,
  • Sumita Mishra

摘要

This study presents an analysis of Fiber Bragg Grating (FBG) integrated systems for structural health monitoring (SHM) applications. FBG sensors were embedded within aluminium, epoxy, and titanium materials and evaluated through finite element analysis (FEA) simulations and experimental testing. The results show wavelength responses of 1546.9 nm to 1550 nm for aluminium, 1535.5 nm to 1555 nm for epoxy, and 1548 nm to 1558 nm for titanium. Strain variation analysis revealed that aluminium exhibited a moderate increase in strain up to 150 MPa across sensor positions 1 to 3, remaining constant thereafter. Epoxy displayed larger strain variations, ranging from 40 MPa to 200 MPa, while titanium demonstrated the highest strain sensitivity, varying from 30 MPa to 200 MPa across all sensor positions. The close alignment between experimental and simulation data highlights the effectiveness of FBG sensors for real-time strain monitoring, with titanium showing the greatest sensitivity. Proposed work will be useful for different application in aerospace industries.