Research Article
Damage Detection Test of GFRP Composite Civil Materials Based on Piezoelectric Ceramic Sensors
| | Specimen number | Number of crack | Crack depth (mm) |
| | Group A (GP-A--) | GP-A-0-0 | 0 | 0 | | GP-A-1-1 | 1 | 1 | | GP-A-1-3 | 1 | 3 | | GP-A-1-5 | 1 | 5 | | GP-A-1-7 | 1 | 7 |
| | Group B (GP-B--) | GP-B-0-0 | 0 | 0 | | GP-B-1-3 | 1 | 3 | | GP-B-3-3 | 3 | 3 | | GP-B-5-3 | 5 | 3 |
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