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Combination of shape and X-ray inspection for apple internal quality control: in silico analysis of the methodology based on X-ray computed tomography KU Leuven University of Antwerp
© 2018 Elsevier B.V. Multisensor inspection allows for inline detection of internal defects of products with variable shapes, such as fruit and vegetables, by combining X-ray radiography with 3D shape recognition and modelling. For products with a complex internal structure such as apple fruit, inspection must also account for the corresponding internal density gradients that can affect X-ray radiographic images. Apple fruit consist of different ...
Quantitative reconstruction of polychromatic X-ray fluorescence computed tomography using transmission tomography Ghent University
Understanding the mechanical strength and dynamic structural changes of wood-based products using X-ray computed tomography Ghent University
The mechanical strength of wood-based products (WBP) is determined by the anatomical structure of wood, including the specificities of earlywood (EW) and latewood (LW), and the bonding interphase between wood and adhesive. In this study, two-layered specimens were manufactured according to three possible assembling strategies in terms of the anatomical structure of wood. Wood micro-structure and phenol formaldehyde (PF) adhesive distribution ...
Iterative reconstruction algorithms for the reduction of artifacts in high resolution X-ray computed tomography Ghent University
A multiresolution approach to iterative reconstruction algorithms in X-ray computed tomography Ghent University
In computed tomography, the application of iterative reconstruction methods in practical situations is impeded by their high computational demands. Especially in high resolution X-ray computed tomography, where reconstruction volumes contain a high number of volume elements (several giga voxels), this computational burden prevents their actual breakthrough. Besides the large amount of calculations, iterative algorithms require the entire volume ...
An Inside Perspective on Magma Intrusion: Quantifying 3D Displacement and Strain in Laboratory Experiments by Dynamic X-Ray Computed Tomography Vrije Universiteit Brussel KU Leuven
Magma intrusions grow to their final geometries by deforming the Earth's crust internally and by displacing the Earth's surface. Interpreting the related displacements in terms of intrusion geometry is key to forecasting a volcanic eruption. While scaled laboratory models enable us to study the relationships between surface displacement and intrusion geometry, past approaches entailed limitations regarding imaging of the laboratory model ...
Observation of crack initiation zone in brick masonry couplets under compression using X-ray microfocus computed tomography and digital image correlation Vrije Universiteit Brussel KU Leuven
The constituent materials of masonry include different brick and mortar types with various properties. The difference in the stiffness properties of these materials influence the observed failure modes under compression. The general theory of the failure mechanisms in brick masonry under compressive loading relies on the difference between the relative elastic modulus of brick and mortar. The aim of this paper is to visually examine the above ...
X-ray computed tomography for characterization of expanded polystyrene (EPS) foam Ghent University
Expanded polystyrene (EPS) foam is widely used in building and construction applications for thermal and acoustic insulation. This material is nearly transparent for X-rays, making it difficult to characterize its pore structure in 3D with X-ray tomography. Because of this difficulty, the pore network is often not investigated and is, thus, poorly known. Since this network controls different physical properties, such as the sound absorption, it ...
An analytical simulation method for X-ray fluorescence computed tomography Ghent University
X-ray Fluorescence Computed Tomography (XFCT) is an emerging imaging technique that provides elemental distribution in objects non-invasively. To predict and optimize the experimental outcome of XFCT, data generated by Monte Carlo (MC) simulation is usually used. However, MC codes typically require extended computing times to generate sufficient data. In this paper, we report an XFCT simulation method based on analytical computation. By ...