A5022300759- Advanced X-ray and CT Imaging
- Medical Imaging Techniques and Applications
- Radiation Dose and Imaging
- Additive Manufacturing and 3D Printing Technologies
- Advanced Measurement and Metrology Techniques
- 3D Surveying and Cultural Heritage
- Remote Sensing and LiDAR Applications
- Electrical and Bioimpedance Tomography
- Scientific Measurement and Uncertainty Evaluation
- Surface Roughness and Optical Measurements
- Additive Manufacturing Materials and Processes
- Optical measurement and interference techniques
- Laser-Plasma Interactions and Diagnostics
- Advanced X-ray Imaging Techniques
- Ion-surface interactions and analysis
- Digital Radiography and Breast Imaging
- Cellular and Composite Structures
- Digital Imaging in Medicine
- High-Velocity Impact and Material Behavior
- Robotics and Sensor-Based Localization
- Manufacturing Process and Optimization
- 3D Shape Modeling and Analysis
- Advanced Sensor and Energy Harvesting Materials
- Dental materials and restorations
- Fluid Dynamics and Heat Transfer
Lawrence Livermore National Laboratory
2023-2025
Materialise (Belgium)
2018-2021
KU Leuven
2015-2021
National Institute of Standards and Technology
2014-2021
National Physical Laboratory
2015-2018
Flanders Make (Belgium)
2018
VIB-KU Leuven Center for Microbiology
2016
Functional graded cellular materials (FGCMs) have attracted increasing attentions for their improved properties when compared to uniform structures. In this work, Gyroid structures (GCSs) with varying gradient directions were designed and manufactured via selective laser melting (SLM). As a reference, also manufactured. The surface morphology mechanical response of these under compressive loads investigated. Results indicate high manufacturability repeatability GCSs by SLM. Optimized density...
Industrial x-ray computed tomography (XCT) is seen as a potentially effective tool for the industrial inspection of complex parts. In particular, XCT an attractive solution measurement internal geometries, which are inaccessible by conventional coordinate measuring systems. While technology available and benefits recognized, methods to establish assurance systems lacking. More specifically, assessment uncertainty subsequent establishment traceability largely unknown process. This paper...
Long synonymous with medical imaging, x-ray computed tomography (CT) is proving its worth in industrial applications such as material characterization, defect analysis, and dimensional inspection e.g. of manufactured components. Since 2005, when the first purpose-built CT instrument was made commercially available, there have been significant efforts to understand just how reliable measurements are. In metrology, ultimate measure confidence metrological traceability—a clearly-defined but...
In this work, we detail a novel application of inverse design and advanced manufacturing to rapidly develop experimentally validate modifications shaped charge jet analog. The analog comprises copper liner, high explosive (HE), silicone buffer. We apply genetic algorithm determine an optimal buffer that can be placed between the liner HE results in largest possible change velocity. use allows for discoveries unintuitive, complex, yet designs. Experiments using verified effectiveness...
Architected materials offer promising advancements in energy storage by enabling highly customizable, high-surface-area, ordered, and low-defect porous structures. This study investigates the current distribution mass transport within complex 3D-printed lattice electrodes under flow-through conditions. Conductive lattices were fabricated using microstereolithography followed pyrolytic carbonization. Lattice geometry effects analyzed varying unit cell type [simple cubic (SC), body-...
Volumetric additive manufacturing (VAM) rapidly prints solid objects within minutes, accessing photochemistries that are traditionally challenging for layer-based methods. This includes high-viscosity materials, air-free chemistries, and solid-state systems. Catalytic chemistries appealing as a pathway to engineering advanced including tough thermosets, silicone elastomers, complex block copolymers. However, photoactivated dormant catalytic where the catalyst irreversibly activates upon...
The recent emergence of advanced manufacturing techniques such as additive and an increased demand on the integrity components have motivated research application x-ray computed tomography (CT) for dimensional quality control. While CT has shown significant empirical potential this purpose, there is a need metrological to accelerate acceptance measuring instrument. accuracy in CT-based measurements vulnerable instrument geometrical configuration during data acquisition, namely relative...
Large volume laser scanners are increasingly being used for a variety of dimensional metrology applications. Methods to evaluate the performance these still under development and there currently no documentary standards available. This paper describes results extensive ranging volumetric tests conducted on large scanner. The demonstrated small but clear systematic errors that explained in context geometric error model instrument. instrument was subsequently returned manufacturer factory...
Abstract Scales for photography provide a geometrical reference in the photographic documentation of crime scene, pattern, or item evidence. The ABFO No. 2 Standard Reference Scale (1) is used by forensic science community as an accurate scale. We investigated overall accuracy major centimeter graduations, internal/external diameters circles, error placement circle centers, and leg perpendicularity. Four vendors were selected scales, features measured on vision‐based coordinate measurement...
4D time-space reconstruction of dynamic events or deforming objects using X-ray computed tomography (CT) is an extremely ill-posed inverse problem. Existing approaches assume that the object remains static for duration several tens hundreds projection measurement images (reconstruction consecutive limited-angle CT scans). However, this unrealistic assumption many in-situ experiments causes spurious artifacts and inaccurate morphological reconstructions object. To solve problem, we propose to...
Industrial Computed Tomography (CT) has recently gained a prominent role in the field of dimensional metrology as powerful 3D coordinate measurement technique. Its main advantage is ability measuring both inner and outer features geometrically complex workpieces without altering or damaging them. The settings with which CT data are acquired can contribute to uncertainty measurements; these chosen by users an intuitive way, resulting high variability outcome. There currently no available...