7 th International Symposium on NDT in Aerospace – Tu.3.A.1 1 License: http://creativecommons.org/licenses/by/3.0/ PORTABLE LOW-COST FLAT PANEL DETECTORS FOR REAL-TIME DIGITAL RADIOGRAPHY Mihai IOVEA 1 , Marian NEAGU 1 , Bogdan STEFANESCU 1 , Gabriela MATEIASI 1 , Ioana POROSNICU 1 , Elena ANGHELUTA 1 1 Accent Pro 2000 S.R.L., Bucharest, Romania Abstract. The X-ray inspection is one of the most common used non-destructive testing methods in industry applications, but for the portable X-ray digital solution are not so many accessible, low-cost and versatile detection devices. The efficiency of a non-destructive X-ray portable device is represented by the quality of digital images, by its low acquisition time combined with a high resolution, in condition of low noise and at an affordable cost. The paper presents two x-ray portable imaging systems developed by us, suitable also for aerospace NDT applications, which are also very versatile for being easily adapted for other fields that requires mobile solutions. The first device described in the paper represent a portable large-size (210mm X 550 mm) and high-resolution (27/54 microns) flat panel detector based on linear translation of a X-Ray TDI detector, destined for various components/parts real-time transmission measurements. The second system it is also a flat panel detectors, with a size of 510mmX610mm, with the detector size from 0.2mm until 1.5 mm, which can operate by applying the dual-energy method, very useful for discriminating materials by evaluating their Atomic effective number. The high resolution and low- cost of this flat-panels widens their applicability by covering large requirements, from identifying unwanted materials within a structure until detection of very thin cracks in complex components. 1.Introduction The nondestructive testing (NDT) techniques are covering very large field of applications being widely used in manufacturing, fabrication and in-service inspections. One of the most nowadays used NDT method is the Digital Radiography (DR) that has been continuously improved for increasing its spatial resolution and reducing the equipment cost. To put in perspective in the aerospace inspection, the X-ray method is still widely using radiological films or Digital Plates (DP) techniques, this being a time-consuming process because often requires re-exposures while the data reading time is quite long. As an alternative solution, came out the flat panel X-ray detectors solution, offering a resolution as good as the film method, practically working in real-time, having an initial high price but also a lower exploitation and maintenance costs. So, the most advanced x-ray inspections are relying on digital Flat Panel Detectors (FPDs), this type of detector being accurate and fast, delivering an image in real time compared with traditional radiological film and allowing a lower dose of radiation due to their high sensitivity. There are many companies that have developed FPDs for several fields, such as: medical application and security luggage inspection, food and pharmaceutical products control. [1,2]. An intermediate X-ray digital radiography solution, that penetrated