Composite Screens Used as a Radiographic Aid.
Abstract
Tests evaluating fluorometallic or composite X-ray intensifying screens have shown that these screens can be valuable and useful accessories in the field of industrial radiography. In many applications, they can increase inspection efficiency by reducing exposure times and possibly lowering the kilovoltages which are required when using conventional lead screens. The radiographic tests were performed using steel plates ranging in thickness from 0.250 to 4.0 inches in the 150 kV to 2.5 MeV radiation quality range with ASTM film classes 1 and 2. Image resolution assessment was based upon penetrameter requirements (2-2T) set forth in MIL-STD-453, Inspection, Radiographic. The resultant radiographs using these screens attained at least the 2-2T quality required by most codes. The high speed screen appears to offer more advantages than the high definition screen. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Mar 01, 1981
- Accession Number
- ADA097936
Entities
People
- Albert J. Coates
- Satrak Derboghosian
Organizations
- United States Army Research Laboratory