Progress in Ultrasonic Measurements Research in 1990: Transient Sources for Acoustic Emission Work
Abstract
Many techniques have been used by acoustic emission workers to produce rapid transient disturbances in elastic media. Techniques employing transient sources are necessary for characterizing many acoustic emission system components such as receiving transducers, transfer media, and other sources as well. Wave forms from seven types of sources were studied by performing experiments in which the source and a high fidelity receiver were mounted on opposite sides of an aluminum plate. Soundspeeds in the plate had been previously measured to provide information necessary for the calculation of the plate Green's function. In each experiment, a source was triggered and the ensuing output from the receiver was captured by a transient recorder. The force waveform of the source was calculated by convolving the inverse of the plate Green's function with the captured waveform.
Document Details
- Document Type
- Technical Report
- Publication Date
- Aug 21, 1990
- Accession Number
- ADA234965
Entities
People
- D. G. Eitzen
- F. R. Breckenridge
- N. N. Hsu
- S. E. Frick
- T. M. Proctor
Organizations
- National Institute of Standards and Technology