Ultrasonic Wave Propagation Model for Nondestructive Evaluation of Solid Rocker Motor Propellant

Abstract

The detection of voids in SRM propellant is critical to the safety of Launch Vehicles. Currently this is done with the use of x-rays as an NDE technique. It is hoped to supplant this technique with the use of ultrasonic NDE methods for reasons of reduced cost, increased mobility of the NDE set-up, automated accept/reject criteria, to name a few. To be feasible the ultrasonic NDE methods must be to differentiate between a through-transmission signal from an SRM propellant segment with a void, and a signal from a segment without a void. The ability of ultrasonic NDE to penetrate one meter of propellant has already been demonstrated with sufficient signal-to-noise ratio. The crux of the ultrasonic NDE method will be in using the information present in the received signal to detect, locate, and size voids.

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Document Details

Document Type
Technical Report
Publication Date
Jan 01, 1993
Accession Number
ADA267653

Entities

People

  • Rosario Nici

Organizations

  • Air Force Institute of Technology

Tags

Communities of Interest

  • Energy and Power Technologies
  • Weapons Technologies

DTIC Thesaurus Topics

  • Complex Variables
  • Computational Fluid Dynamics
  • Computational Science
  • Differential Equations
  • Environment
  • Materials Laboratories
  • Materials Science
  • Materials Testing
  • Mechanics
  • Modulus Of Elasticity
  • Standing Waves
  • Test And Evaluation
  • Three Dimensional
  • Two Dimensional
  • Ultrasounds
  • Wave Propagation
  • Waveforms

Fields of Study

  • Physics

Readers

  • Electrical Engineering
  • Radar Systems Engineering.
  • Structural Health Monitoring of Composite Structures.