抄録
One of the most fruitful areas for application of the AE technique lies in monitoring defects of weld part. AE monitoring system was designed to apply AE technique to the continuous detection of weld defects and classification of noise during welding process by using synchroscope and spectrum analyzer.
The system applied to a simulation welding experiment where several simulating AE were generated at the simulated weld line on the test specimen like as travelling weld arc and weld defects in weld bead, if occurred, and received at the various location of different distance from the signal source of the simulated weld line.
Both reproducibility of simulated AE source and directivity of transducer have of good performance to detect the weld defects and noise. Further the system will be successfully applied to monitor and analyze the signal from weld defects and noise by the AE signal shape and frequency spectra.
