Title :
High-power high-resolution pulser for air-coupled ultrasonic NDE applications
Author :
Salazar, J. ; Turó, A. ; Chávez, J.A. ; Ortega, J.A. ; García, M.J.
Author_Institution :
Dept. of Electron. Eng., Univ. Politecnica de Catalunya, Barcelona, Spain
Abstract :
This paper describes the design and development of a high-power high-resolution pulser designed especially for air-coupled ultrasonic NDE applications requiring high material penetration capability. The pulser can deliver up to 800 V in a spike excitation type pulse to appropriate low/medium frequency transducers. Moreover, the pulser operates in three different modes: single pulse, double pulse (pulse cancellation technique) and external reference signal, where the last two operating modes are intended to enhance the resolution of ultrasonic inspections
Keywords :
acoustic pulses; pulse generators; pulsed power supplies; ultrasonic materials testing; ultrasonic transducers; 800 V; US short pulse generation; air-coupled US NDE application; double pulse; enhanced inspection resolution; external reference signal; high material penetration capability; high-power high-resolution pulser; low frequency transducers; medium frequency transducers; pulse cancellation technique; pulser design; single pulse; spike excitation type pulse; Acoustic pulses; Acoustic transducers; Delay effects; Insertion loss; Inspection; Pulse generation; Pulsed power supplies; Signal to noise ratio; Ultrasonic transducers; Voltage;
Conference_Titel :
Instrumentation and Measurement Technology Conference, 2001. IMTC 2001. Proceedings of the 18th IEEE
Conference_Location :
Budapest
Print_ISBN :
0-7803-6646-8
DOI :
10.1109/IMTC.2001.929502
