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 setAccuracy of testing set (%)
{Mean, STD, RMS, peak, energy}{Skewness, kurtosis, peak frequency, average frequency}{Envelope, mean, peak}{Envelope, skewness, kurtosis, peak frequency}

KG96.2194.7099.2499.24
KL94.7095.4598.4899.24
KP94.7094.7097.7399.24