Accession Number : ADA304580

Title :   Nondestructive Testing of Scout Rocket Motors.

Descriptive Note : Contractor rept.,

Corporate Author : GENERAL ELECTRIC CO PHILADELPHIA PA

Personal Author(s) : Oaks, Arthur E.

PDF Url : ADA304580

Report Date : APR 1972

Pagination or Media Count : 288

Abstract : The nondestructive tests applied to Scout rocket motors were reviewed and appraised. Analytical techniques were developed to evaluate the capabilities of the radiographic end ultrasonic procedures used. Major problem areas found were the inadequacy of high voltage radiography for detecting unbonds and propellant cracks having narrow widths, the inability to relate the ultrasonic signals received from flat-bottomed holes in standards to those received from real defects and in the general area of the specification of acceptance criteria and how these were to be met. To counter the deficiencies noted, analyses were conducted of the potential utility of radiometric, acoustic, holographic and thermographic techniques for motor and nozzle bond inspection, a new approach to qualifying magnetic particle inspection and the application of acoustic emission analysis to the evaluation of proof and leak test data. Recommendations to correct current operational problem areas and for experimental programs to demonstrate the efficacy of the analyses performed are included.

Descriptors :   *ROCKET ENGINES, EXPERIMENTAL DATA, NONDESTRUCTIVE TESTING, CRACKS, PROPELLANTS, DEFECTS(MATERIALS), ULTRASONICS, INSPECTION, NOZZLES, ACOUSTIC SIGNALS, BONDING, WIDTH, ACOUSTIC EMISSIONS, RADIOGRAPHY, ACCEPTABILITY, HIGH VOLTAGE, SOUND ANALYZERS.

Subject Categories : Rocket Engines

Distribution Statement : APPROVED FOR PUBLIC RELEASE