HYBRID TRANSIENT-PARAMETRIC METHOD AND SYSTEM TO DISTINGUISH AND ANALYZE SOURCES OF ACOUSTIC EMISSION FOR NONDESTRUCTIVE INSPECTION AND STRUCTURAL HEALTH MONITORING

摘要

A nondestructive evaluation (NDE) technique for inspecting or health monitoring of strutures and/or specimens by analyzing acoustic emission (AE) signals emitted by the structures and/or specimens. The method and system analyzes acoustic emission (AE) signals emitted by structures and/or specimens. AE signals emitted by the structures and/or specimens are parametrically filtered as a function of parametric filters corresponding to characteristic waveforms of transient AE classes of predefined AE signals. In parametric analysis, the filtering may be pre- or post-recording. In transient AE analysis, the filtering may be prior to transient recording of the transient signals.