Accession Number : AD0650876

Title :   BOND INSPECTION BY SCANNING IMAGES IN SCINTILLATING CRYSTALS,

Corporate Author : NAVAL ORDNANCE LAB WHITE OAK MD

Personal Author(s) : Dyer,C. H. ; Criscuolo,E. L. ; Polansky,D.

Report Date : 15 MAR 1967

Pagination or Media Count : 22

Abstract : Characteristics of filmless methods of bond inspection for large diameter motors are presented. High energy radiation after traversing the bond area of a motor impinges on a sodium iodide crystal, which transforms the radiation intensity into a light pattern. This image on the crystal is scanned with an optical scanning system. A photomultiplier converts the light to an electrical signal, which is then displayed on an oscilliscope. Limitations of the system due to the relatively poor image formation ability of a scintillating crystal are given. Data are presented on detectable slit sizes using a 10 Mev betatron and 14 inches of low atomic number materials. (Author)

Descriptors :   (*SOLID ROCKET PROPELLANT BINDERS, *NONDESTRUCTIVE TESTING), (*SCINTILLATION, SCANNING), X RAYS, CRYSTALS, IMAGES, DETECTORS, SOLID ROCKET PROPELLANTS, ROCKET ENGINE CASES, BONDING

Subject Categories : Test Facilities, Equipment and Methods
      Solid Propellant Rocket Engines
      Solid Rocket Propellants

Distribution Statement : APPROVED FOR PUBLIC RELEASE