Radiography is one of the most widely used non-destructive examination methods, with applications in practically all industries. Conventional radiography utilizes the film/screen combination for recording the images.
New digital radiographic techniques are replacing classical film based radiography techniques in non destructive testing (NDT). Detector based digital radiography is now being applied to a broad range of X ray applications, including inspection of pipeline welds, castings, electronics assemblies, wheels, bridges and many other industrial uses for technical, environmental, safety and economic advantages. Increased emphasis on environmental safety, concerns for the effects of radiation on workers and the requirement for disposal of the chemicals used to process film, have contributed to the growing need to replace conventional X ray inspections involving long film exposures. The relatively low operational cost of digital radiography and the possibility for online inspection are other major advantages of digital radiography.
The major handicap of digital radiography at present is the relatively high cost of the commercial hardware and software. There is sufficient evidence, when comparing film-based and digital radiography, that simple and low cost DIR technology is economically attainable and offers a very substantial advantage in many situations. The objective of the proposed coordinated research project (CRP) is to develop the methodologies based on simple, low cost and affordable digital radiography techniques for selected material and defect investigations. The CRP will assist developing member states to introduce advanced digital radiography technology for online plant life assessment. An educational package will be prepared for training NDT practitioners in simple and low cost DIR experimental design, data processing and interpretation. The final goal of the CRP is the optimization of Digital Industrial Radiography (DIR) techniques for specific applications of importance to developing Member States.