Retro-fitting Stressed / Loaded Systems for Structural Health Monitoring Using Back Track -Calibration

Abstract

Abstract A structural health monitoring system is provided for use in structures that are already under permanent stress and cannot be de‑stressed for sensor installation. The system employs multiple strain gauges arranged to detect changes in force without altering the existing load path. A BackTrack‑Calibration method is used, in which temporary load path diversion allows collection of reference de‑stressing data. Firmware or software then applies an algorithm that correlates ongoing strain measurements with this data to create a calibrated baseline. This enables accurate, continuous monitoring of pre‑stressed structures where conventional systems cannot be retrofitted.

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