Ferroelectric Nylon-7, -11 Ultrasonic Transducer Performance.
Abstract
Measurements of the high frequency electrical and acoustic properties of ferroelectric nylon 7 and 11 are reported for frequency and temperature ranges of interest for ultrasonic transducer applications in medicine and nondestructive testing. The dielectric properties of the samples were measured over a broadband frequency range (typically 1-100 MHz), including the fundamental half-wave resonance frequency for the sample, and the properties of interest for ultrasound transducer design were determined using a curve fitting resonance technique. These properties were then used in a computer simulation program to assess the acoustic performance of nylon based ultrasonic transducers and compare them with PVDF and P(VDF-TrFE) copolymer designs. Comparisons were carried out on the pulse echo acoustic performance including pulse width, sensitivity, insertion loss, and bandwidth. Finally, a nylon ultrasound transducer was fabricated for pulse echo acoustic performance measurements and comparison with PVDF. Tests verified the broadband acoustic performance of nylon 7.
Document Details
- Document Type
- Technical Report
- Publication Date
- Apr 01, 1996
- Accession Number
- ADA307795
Entities
People
- B. A. Newman
- D. Khataniar
- J. I. Scheinbeim
- J. L. Mason
- L. F. Brown
Organizations
- Rutgers University–New Brunswick