PULSE PROPAGATION IN A LAMINATED MEDIUM,
Abstract
The properties of a stratified elastic medium, with respect to propagation of stress pulses in a direction normal to the layers are examined. The medium is found to possess a dispersion curve with passing and stopping bands. If a ringing pulse has a frequency in a stopping band it will not propagate but will quickly attenuate; conversely, if its frequency lies in a passing band it will propagate with a group velocity corresponding to that particular frequency. The medium resolves ordinary pulses into two classes of ringing pulses, those which propagate and those which attenuate. Thus the energy admittance of the medium can be reduced by suitably narrowing the passing bands. Analytical solutions for propagating and attenuating pulses are given. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Sep 01, 1970
- Accession Number
- AD0712376
Entities
People
- Kirk C. Valanis
Organizations
- University of Iowa