Research Article
Acoustic Emission-Based Small Leak Detection of Propulsion System Pipeline of Sounding Rocket
Table 3
Validation results for unqualified features based on 3 kernel functions.
| Kernel function/feature set | Accuracy of testing set (%) | {Mean, STD, RMS, peak, energy} | {Skewness, kurtosis, peak frequency, average frequency} | {Envelope, mean, peak} | {Envelope, skewness, kurtosis, peak frequency} |
| KG | 96.21 | 94.70 | 99.24 | 99.24 | KL | 94.70 | 95.45 | 98.48 | 99.24 | KP | 94.70 | 94.70 | 97.73 | 99.24 |
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