Assessing the Difference in Measuring Bolt Stress: A Comparison of Two Optical Fiber Sensing Techniques

Monitoring the load level of the rock bolts is of great importance for assessing risk. Based on the mechanical transmission mechanism of grouting bolts, the bolt pull-out test was carried out in lab. The performance of the bolt under pull-out loading was measured using the pulse-pre-pump Brillouin o...

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Veröffentlicht in:	Journal of sensors 2018-01, Vol.2018 (2018), p.1-11
Hauptverfasser:	Zhang, Dingding, Zhang, Guihua, Liu, Jinxuan, Liu, Qi, Chai, Jing, Qiu, Fengqi
Format:	Artikel
Sprache:	eng
Schlagworte:	Axial stress Bolts Deformation mechanisms Detection Engineering Fiber optics Grout Grouting Humidity Mining Optical fibers Pull out tests Reproducibility Rock bolts Sensors Smart materials Standard deviation Strain gauges Stress concentration Time domain analysis
Online-Zugang:	Volltext
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