Accession Number : AD0774905

Title :   The Selection and Demonstration of Advanced Nondestructive Testing Techniques for on-Site Missile Inspection. Volume II. Appendices.

Descriptive Note : Final rept. 15 May 72-14 Sep 73,

Corporate Author : AEROJET SOLID PROPULSION CO SACRAMENTO CALIF

Personal Author(s) : Briar,H. P. ; Bills,K. W. , Jr. ; Cribbs,R. W. ; Lamb,B. L.

Report Date : NOV 1973

Pagination or Media Count : 168

Abstract : The report describes a program planned around the problem of on-site non-destructive testing (NDT) of solid rocket motors. It was designed to select, evaluate, and demonstrate NDT capabilities, beginning with comprehensive surveys of industry and the world's literature (from 1960 to mid-1972). Only two techniques showed promise: Ultrasonic holography and gamma radiography. In the ensuing developments ASPC evaluated two ultrasonic systems. The first, modified ultrasonic holography, was developed from known principals of holography and ultrasound transmission through materials. The theoretical resolution of this system ranges between 0.4 in. and 1 in. at a depth of 18 in. into the propellant. The second system, acoustic profilography, uses the principal of diffraction to measure the shortest path across a secant of the motor. (Modified author abstract)

Descriptors :   *Guided missile silos, *Surface to surface missiles, *Solid rocket propellants, *Nondestructive testing, Solid propellant rocket engines, Ultrasonic tests, Holography, Radiography, Gamma rays, Profiles

Subject Categories : Test Facilities, Equipment and Methods
      Surface-launched Guided Missiles
      Solid Rocket Propellants

Distribution Statement : APPROVED FOR PUBLIC RELEASE