Title :
Ultrasonics research in the NIST Manufacturing Engineering Laboratory
Author :
Blessing, Gerald V. ; Hsu, Nelson N. ; Slotwinski, John A. ; Xiang, Dan
Author_Institution :
Nat. Inst. of Stand. & Technol., Gaithersburg, MD, USA
fDate :
5/1/2000 12:00:00 AM
Abstract :
The Ultrasonic Standards Group in the Manufacturing Engineering Laboratory of the National Institute of Standards and Technology (NIST) performs research, develops standards, and offers calibration services in support of United States industry. In this paper, two areas of recent experimental research using a thin film piezoelectric polymer are briefly reviewed. One is the development and application of a large aperture lensless line-focus transducer for time-resolved pulsed-wave measurements. The second is the effect of nonlinear wave propagation on pulsed waveforms in industrial ultrasonic nondestructive testing applications.
Keywords :
acoustic pulses; nonlinear acoustics; piezoelectric transducers; ultrasonic materials testing; ultrasonic transducers; NIST Manufacturing Engineering Laboratory; Ultrasonic Standards Group; United States industry; calibration; lensless line-focus transducer; nonlinear wave propagation; piezoelectric polymer thin film; time-resolved pulsed wave measurement; ultrasonic nondestructive testing; ultrasonics research; Apertures; Calibration; Laboratories; Manufacturing industries; NIST; Piezoelectric films; Piezoelectric transducers; Polymer films; Pulse measurements; Standards development;
Journal_Title :
Ultrasonics, Ferroelectrics, and Frequency Control, IEEE Transactions on
