Skip to main content

Structural Health Monitoring

Structural Health Monitoring with Fiber Bragg Grating Sensors

Structural Health Monitoring (SHM) is the continuous or periodic assessment of a structure’s integrity to detect damage, stress, or environmental effects.

Proximion FBG optical fiber embedded or attached to the structure measure strain and temperature with high precision. This monitoring of stress and strain can give early warning of structural issues well in advance of any catastrophic damage.

Why Proximion FBG-sensors for SHM

Why Proximion FBG Sensors for SHM?

  • High Sensitivity: Detects micro-strain and thermal variations.
  • Multiplexing Capability: Multiple gratings on a single fiber allow distributed sensing over large areas.
  • Durability: Resistant to corrosion, electromagnetic interference, and harsh environments.
  • Lightweight & Non-Intrusive: Ideal for aerospace, civil, and energy applications.

Working Principle

  • An FBG reflects a specific wavelength of light (Bragg wavelength).
  • Structural strain or temperature changes alter the grating spacing, shifting the reflected wavelength.
  • This wavelength shift is proportional to strain or temperature, enabling precise monitoring.
SHM - Working principle
Structural Health Monitoring Applications

Applications

  • Civil Infrastructure: Bridges, tunnels, dams for load and stress monitoring.
  • Aerospace: Aircraft wings and fuselage for deformation tracking.
  • Energy: Wind turbine blades and offshore platforms for fatigue detection.
  • Industrial: Pipelines for strain due to pressure or ground movement.

Advantages Over Traditional Sensors

  • Long-distance monitoring (up to tens of kilometres).
  • No electrical interference.
  • Ability to integrate into composite materials.
  • Reduced cabling complexity.
structural health monitoring sensors have Advantages over traditional sensors

Why Choose Proximion

Proven expertise in Fiber Bragg Grating technology and optical dispersion management.
Full in-house design and manufacturing capability ensuring traceability and quality control.
Experience across multiple domains: telecom, energy, defence, aerospace, medical, and research.
Scalable solutions — from prototype development to large-scale production.
Trusted by global industry leaders and research institutions for reliability and precision.