Accession Number:

ADA030319

Title:

Diversification of Acoustical Holography as a Nondestruct Inspection Technique to Determine Aging Damage in Solid Rocket Motors.

Descriptive Note:

Final rept.,

Corporate Author:

HOLOSONICS INC RICHLAND WASH

Personal Author(s):

Report Date:

1976-04-01

Pagination or Media Count:

117.0

Abstract:

The feasibility of using acoustical holography as a nondestructive technique for determining small innerbore cracks and debonds in larger solid rocket motors was demonstrated. Cracks as small as one inch long, one-half inch deep, and less than 0.002-in. thick located on the innerbore of simulated Minuteman first, second, and third stage motors 18-in. web-thickness were readily identified. Unbonds of one square inch area between the case and propellant were imaged. Acoustic attenuation in TITAN III C type propellant was measured. Off axis scanning and concentric axial scanning were investigated. Author

Subject Categories:

  • Test Facilities, Equipment and Methods
  • Acoustics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE