Digital radiography is earning its place in the NDT market, as specialists realize this technology surpasses Film and Film Replacement. Portable digital Radiography provides many benefits to users. Fast images upon request for immediate analysis mean there is no compromise on image quality and no repositioning. Vidisco flat panel systems enable the reduction of working time and costs while enla...

We show that discrete tomography (DT) is suitable to increase the possible inspection size of single material oblong objects compared to filtered back projection (FBP) in non-destructive testing (NDT) with 2D X-ray computed tomography (CT). For such objects which are in one dimension larger than the maximum detectable material thickness limited view angles occur and FBP is not suitable for reco...

Gauss-Markov-Potts models for images and its use in many image restoration and super-resolution problems have shown their effective use for Non Destructive Testing (NDT) applications. In this paper, we propose a 3D Gauss-Markov-Potts model for 3D CT for NDT applications. Thanks to this model, we are able to perform a joint reconstruction and segmentation of the object to control, which is very ...

Requirements on components for automotive applications are becoming evermore stringent. Defects need to be banned and dimensional measurement of complex geometries with high resolution is required. In addition, throughput is high and production cycles may last only a few seconds. These objectives call for nondestructive testing (NDT) that keeps step with the production cycle. Production and qua...

NDT is mainly discussed as an engineering technology to detect, classify and size material imperfections, called material defects. Lattice defects and microstructure inhomogeneities like vacancies, dissolved atoms dislocations and precipitations are normally not discussed as defects but they are influence parameters which mainly predict the macroscopic properties, the physical properties as wel...

In the context of infrared thermographic NDT, the whole acquisition chain is first reviewed including the required pre-processing stages needed to restore images from degradations such as vignetting, camera noise and dead pixels. Polynomial conversion to temperature values is next. Secondly, the processing steps are discussed following two main directions: qualitative imaging which requires ima...

4. Neutron and X-ray Tomography in Non-Destructive Testing (NDT): A new complex neutron-, gamma-, and X-ray three-dimensional computer tomography system suitable for experimental and industrial applications has been built at 10-MW Budapest research reactor site. A number of objects were investigated and tomographic projections were made. We study the optimal preprocessing steps and the optimal ...

In recent years, NonDestructive Testing (NDT) systems have been upgraded with three-dimensional information. Indeed, combine the three-dimensional and thermal information allows a more meaningful analysis. In the literature, the data for NDT and three-dimensional (3D) reconstruction analysis are commonly acquired from independent systems. However, the use of two such systems leads to error anal...

This study sums up the authors recent works on steel Non-Destructive Testing and Evaluation achieved between 2000 and 2008. The main related items are the establishment of a first-order correlation between the thermal diffusivity and the Vickers hardness HV as a guide to set an NDT protocol to investigate steel strengthened surface performance. A special attention is confined toward carburized ...

Purpose: This study aimed to evaluate the effectiveness of neurodevelopmental therapy (NDT) for improving lower extremity functions, ankle dorsiflexion range motion (ROM), popliteal angle, medial gastrocnemius (GCM) muscle thickness (MT), and functionality on children with hemiparetic Cerebral Palsy (CP).
 Methods: Eighteen CP aged between 6-15 years were included in study. Structured NDT ...