Concept of a seven-wire steel strand embedding an FBG sensor.

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Schematic of the all-fiber Sagnac interferometer-based taper coupling

Bang Yeon LEE, Chonnam National University, Gwangju

Enhanced Strain Measurement Range of an FBG Sensor Embedded in Seven-Wire Steel Strands. - Abstract - Europe PMC

Elasto-magneto-electric (EME) sensors for force monitoring of prestressing tendons, Advances in Bridge Engineering

PDF) Enhanced Strain Measurement Range of an FBG Sensor Embedded in Seven-Wire Steel Strands

Monitoring of prestress and bond stress of self-sensing FBG steel strand - ScienceDirect

Table 2 from A Sensor-Type PC Strand with an Embedded FBG Sensor for Monitoring Prestress Forces

Monitoring of prestress and bond stress of self-sensing FBG steel strand - ScienceDirect

n x , n y , and B at the wavelengths from 1 to 2 µm where n x and n y

Seven-wire strand with FBG sensors

Analysis of Short-Term Prestress Losses in Post-tensioned Structures Using Smart Strands, International Journal of Concrete Structures and Materials

FBG Sensors Encapsulated into 7-Wire Steel Strand for Tension Monitoring of a Prestressing Tendon

Experimental Investigation of a Self-Sensing Hybrid GFRP-Concrete Bridge Superstructure with Embedded FBG Sensors - Yanlei Wang, Yunyu Li, Jianghua Ran, Mingmin Cao, 2012