Evaluation of a Radiographic Paper System Using Ultraviolet Fluorescent Screens. Part 1. Program Objectives,Technique and Sensitivity Data for F-1Screen.

摘要

Ultraviolet fluorescent screens are being evaluated as part of a radiographic paper system over an X-ray energy range from 25KVCP to 300KVCP in order to determine its potential for replacing X-ray film at a cost savings in certain applications. Part I gives the technique curves obtained for 2024aluminum from 25KVCP to 150KVCP without screens and with Kodak Industrex Intensifying Screen F-1. Detail sensitivity obtained with penetrameters is reported with this screen for selected thicknesses of aluminum with penetrameters is reported with this screen for selected thicknesses of aluminum over this energy range. A comparison is made of film radiography and paper radiography using two different types of fluorescent screens with titanium and aluminum honeycomb samples. These samples illustrate varying degrees of foam adhesive used to bond the honeycomb to the spar or end closure,water entrapped in the cells,deformed and crushed core. Another application of paper radiography is inspecting wax molds used for making investment cast turbine blades for cracks and porosity. (Modified author abstract)