X-RAY IMAGE SYSTEM FOR NONDESTRUCTIVE TESTING OF SOLID PROPELLANT MISSILE CASE WALLS AND WELDMENTS
Abstract
A vidicon X-ray image enlargement system for inspection of missile case walls and weldments was developed for in-motion examination of steel missile case materials and weldments, up to 1/4 in. in thickness, with 2% penetrameter sensitivity and 1/1000 in. detail resolution. X-ray images are detected directly by vidicon camera tubes with 3/8 by 1/2 in. sensing areas, and enlarged through 525-line closed-circuit television systems and 17 in. kinescope picture tubes to provide 32X images of fine details. Tests of the inspection system with missile case materials and weldments showed fine cracks, porosity, inclusions, and other discontinuities, with sensitivities comparable to optimum film radiography with fine-grain, high-contrast, Class I X-ray films. The system offers these potential advantages over X-ray film inspection: production of enlarged images suitable for direct viewing; elimination of costs of X-ray film and processing; immediate interpretation during in-motion inspection; and flexibility in control of inspection conditions. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Jun 01, 1961
- Accession Number
- AD0271365
Entities
People
- Jay P. Mitchell
- Merle L. Rhoten
- Robert C. Mcmaster
Organizations
- Ohio State University