Application of the Microclamped Fiber Bragg Grating (FBG) Sensor in Rock Bolt Support Quality Monitoring

<table class="table-group" id="tab1"><tr><td><table class="table"><tr><td class="thead-hr" colspan="2"><hr/></td></tr><tr class="thead"><td class="align_left">Material parameter</td><td class="align_center">Numerical value</td></tr><tr><td class="thead-hr" colspan="2"><hr/></td></tr><tr><td class="align_left">Elastic modulus of the optical fiber (<i>E</i><sub><i>f</i></sub>)</td><td class="align_center">7.2 × 10<sup>10</sup> Pa</td></tr><tr><td class="align_left">Elastic modulus of the steel capillary tube (<i>E</i><sub><i>s</i></sub>)</td><td class="align_center">210 × 10<sup>9</sup> Pa</td></tr><tr><td class="align_left">Diameter of the steel capillary tube (<i>d</i><sub><i>s</i></sub>)</td><td class="align_center">0.8 mm</td></tr><tr><td class="align_left">Diameter of the optical fiber (<i>d</i><sub><i>f</i></sub>)</td><td class="align_center">0.125 mm</td></tr><tr class="table-tr"><td colspan="2"><hr class="tbody-hr"/></td></tr></table></td></tr></table>

<div>Material properties of the optical fiber and steel capillary tube.</div>

Advances in Civil Engineering

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Table 1

Table 1: Application of the Microclamped Fiber Bragg Grating (FBG) Sensor in Rock Bolt Support Quality Monitoring 