A PDP-8 FORTRAN PROGRAM FOR REDUCTION OF ACOUSTIC IMPEDANCE DATA.

Abstract

A FORTRAN program was developed to compute the propagation constants of a sample of material from measured values of the complex reflection coefficient, the sample density, and the sample thickness. Because the equations relating the reflection coefficient to the propagation constants are transcendental and cannot be solved algebraically for the attenuation and sound speed, the technique is to assume a pair of values and use the method of successive approximations. The program and its present limitations are discussed, and sample computations are presented. (Author)

Document Details

Document Type
Technical Report
Publication Date
Mar 28, 1969
Accession Number
AD0686663

Entities

People

  • Gerald A. Sabin
  • James L. Lastinger

Organizations

  • United States Naval Research Laboratory

Tags

DTIC Thesaurus Topics

  • Acoustic Impedance
  • Attenuation
  • Coefficients
  • Computations
  • Equations
  • Impedance
  • Materials
  • Mathematics
  • Physical Properties
  • Reflection
  • Thickness

Readers

  • Calculus or Mathematical Analysis
  • Microwave Engineering.
  • Parallel and Distributed Computing.