Research Article
Using Expert Opinion to Quantify Uncertainty in and Cost of Using Nondestructive Evaluation on Bridges
Table 8
Comparison of NDE methods using rankings indicated by participant responses.
| | | Bias | Accuracy | Reliability | Average cost |
| | Concrete NDE methods | | | | | | Cover meters/pachometer | 1 | — | 1 | 4 | | Electrical potential | — | 1 | 6 | 5 | | Impact echo | 2 | — | 7 | 9 | | Mechanical sounding | — | 3 | 1 | 1 | | Radar | 5 | — | 5 | 7 | | Rebound hammer | — | — | 8 | 3 | | Thermal | — | 4 | 9 | 7 | | Ultrasonic testing | 4 | — | 1 | 6 | | Visual inspection | 3 | 2 | 4 | 2 | | Steel NDE methods | | | | | | Acoustic emission | 1 | 1 | 2 | 8 | | Liquid penetrant testing | — | 5 | 8 | 2 | | Magnetic particle testing-crack | — | 8 | 2 | 3 | | Magnetic particle testing-weld | — | 7 | 7 | 3 | | Radiography | 5 | 3 | 1 | 9 | | Ultrasonic testing-crack detection | 3 | 4 | 6 | 5 | | Ultrasonic testing-pin inspection | 2 | 6 | 5 | 5 | | Ultrasonic testing-weld inspection | 4 | 2 | 2 | 5 | | Visual inspection | 6 | 9 | 8 | 1 |
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