Acoustical Imaging System Evaluation

Abstract

A non-destructive evaluation device was delivered to the AFRPL by Battelle Laboratories. The sensitivity and other operational limitations of the device were not known, and a project was initiated at the AFRPL to determine those parameters. Sensitivities for both the through transmission subsystem and the pulse echo subsystem were determined. Both techniques use ultrasound to detect inner bore cracks in the propellant grains, and case/liner debonds (respectively) in tactical missile motors. In addition, the limitation of the mechanical subsystem and the transducer head geometry were investigated. Several inert analog motor sections, with both metal and phenolic cases, were used in the investigation, including a full size inert Sidewinder motor. The goal for the technology is to produce a field-usable motor health monitor for the DoD.

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Document Details

Document Type
Technical Report
Publication Date
Sep 01, 1985
Accession Number
ADA159425

Entities

People

  • M. Foley

Organizations

  • Air Force Research Laboratory

Tags

Communities of Interest

  • Weapons Technologies

DTIC Thesaurus Topics

  • Acoustic Properties
  • Air Force
  • Air Gaps
  • Ballistic Missiles
  • Classification
  • Computers
  • Detection
  • Diameters
  • Frequency
  • Geometry
  • Holography
  • Imaging Techniques
  • Propellant Grains
  • Rocket Engines
  • Rocket Propulsion
  • Test And Evaluation
  • Ultrasounds

Fields of Study

  • Physics

Readers

  • Aerospace Test and Evaluation
  • Rocket Propulsion.
  • Structural Health Monitoring of Composite Structures.