Acoustic Emission (AE) signals, which are electrical version of acoustic emissions, are usually analysed using a set of signal parameters. The major objective of signal analysis is to study the characteristics of the sources of emissions. Peak amplitude (P{sub}a) and rise time (R{sub}t) are two such parameters used for source characterization. In this paper, we theoretically investigate the efficiency of P{sub}a and R{sub}t to classify and characterize AE sources by modelling the input stress pulse and transducer. Analytical expressions obtained for P{sub}a and R{sub}t clearly indicate their use and efficiency for source characterization. It is believed that these results may be of use to investigators in areas like control systems and signal processing also.
展开▼
