High Voltage Pulser for NDE Air-Coupled Lamb Wave Ultrasonic System

High Voltage Pulser for NDE Air-Coupled Lamb Wave Ultrasonic System

This paper describes a high voltage pulser developed for an air-coupled ultrasonic array NDE system based on Lamb waves. Unlike the classical single pulse excitation circuits, this pulser is able to generate a bipolar return-to-zero square-wave burst signal up to plus or minus 250 V of amplitude. Th...

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Hauptverfasser: Garcia-Rodriguez, M, Arjones, V, Yanez, Y, Garcia-Hernandez, M J, Salazar, J, Turo, A, Chavez, J A
Format: Tagungsbericht
Sprache:eng
Schlagworte:
Amplitudes
Arrays
Bursting
Circuits
Excitation
High voltages
Lamb waves
Nondestructive testing
Pulse generators
Resonant frequencies
Transducers
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Beschreibung
Zusammenfassung:This paper describes a high voltage pulser developed for an air-coupled ultrasonic array NDE system based on Lamb waves. Unlike the classical single pulse excitation circuits, this pulser is able to generate a bipolar return-to-zero square-wave burst signal up to plus or minus 250 V of amplitude. The system is composed of two 32 elements concave array with a resonant frequency of 800 kHz. To excite all the transducers an array of pulsers with small volume and weight to be able to place it close to the concave array has been designed.
ISSN:0094-243X
DOI:10.1063/1.3455448