Journal of Sensors / 2009 / Article / Fig 7

Review Article

Plastic Optical Fibre Sensors for Structural Health Monitoring: A Review of Recent Progress

Figure 7

(a) Photograph showing the crack line across the electrical strain gauge at approximately 0.3 mm beam central deflection. (b) Photograph showing the widening of the crack after several loading cycles—the damage of the electrical strain gauge is evident while the POF sensors continued to monitor the loading process (after [14]).

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