In order to enhance the inspection abilities of an ultrasound system, it can be convenient to increase the number of probes used for the monitoring. In case of multiple simultaneously-operated transmitting transducers, the possibility of interference among the multiple excitations injected in the system should be considered. To avoid such interference, one may use code division. This solution requires some special processing when applied to systems that rely on guided waves (GWs) inspections. In this work, a phase-modulation and pulse compression strategy for guided wave inspections which is based on the Warped Frequency transform is proposed.
De Marchi, L., Marzani, A., Moll, J., Kudela, P., Radzienski, M., Ostachowicz, W. (2015). Spread spectrum pulse coding in lamb wave inspections. DEStech Publications.
Spread spectrum pulse coding in lamb wave inspections
DE MARCHI, LUCA;MARZANI, ALESSANDRO;
2015
Abstract
In order to enhance the inspection abilities of an ultrasound system, it can be convenient to increase the number of probes used for the monitoring. In case of multiple simultaneously-operated transmitting transducers, the possibility of interference among the multiple excitations injected in the system should be considered. To avoid such interference, one may use code division. This solution requires some special processing when applied to systems that rely on guided waves (GWs) inspections. In this work, a phase-modulation and pulse compression strategy for guided wave inspections which is based on the Warped Frequency transform is proposed.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
