Accession Number : AD0282223

Title :   X-RAY IMAGE SYSTEM FOR NONDESTRUCTIVE TESTING OF SOLID PROPELLANT MISSILE CASE WALLS AND WELDMENTS.

Descriptive Note : Quarterly progress rept. no. 3, 21 Dec 61-20 Mar 62,

Corporate Author : OHIO STATE UNIV RESEARCH FOUNDATION COLUMBUS

Personal Author(s) : McMaster ,Robert C. ; Mitchell ,Jay P. ; Rhoten,Merle L.

Report Date : 20 MAR 1962

Pagination or Media Count : 50

Abstract : A television X-ray image enlargement system was developed for in-motion examination of missile case materials and weldments. Imaging tests of steel materials indicate that a 2% penetrameter contrast sensitivity can be obtained up to 1/4-inch thickness with 1/1000-inch detail resolution. Resolution tests indicate that wire diameters down to 5/10,000-inch can be visualized on the monitor screen. Comparative signal response evaluation tests of glass-window television camera tubes have been made with 150, 220, and 300 kv X-ray sources. The data indicate similar responses to the 220 and 300 kv sources. Comparative data taken at 100 kv with the 150 kv Be-window and 220 kv glass-window X-ray sources indicate that signal response is greater to the 220 kv glass-window X-ray source. Evaluation tests of an image memory camera tube indicate that it is sensitive to X-radiation and can store X-ray images up to 10 minutes. Imaging tests with 1/2-inch thick Al specimens indicate that 2% penetrameter contrast sensitivity can be observed. A gamma amplifier was constructed to improve the contrast range of the television image. (Author)

Descriptors :   *CAMERA TUBES, *NONDESTRUCTIVE TESTING, *ROCKET ENGINE CASES, *TELEVISION CAMERAS, ALUMINUM, BERYLLIUM, CIRCUITS, MEMORY DEVICES, DATA STORAGE SYSTEMS, GLASS, SELENIUM, STEEL, TARGETS, THICKNESS, THIN FILMS (STORAGE DEVICES), TUNGSTEN ALLOYS, WELDS, WIRE, X RAY PHOTOGRAPHY, X RAYS

Distribution Statement : APPROVED FOR PUBLIC RELEASE