X-ray applications and recent advances @ XLab Frascati

Dabagov, S.B.; Hampai, D.; Guglielmotti, Valeria; Cappuccio, G.; Capitolo, E.; Gladkikh, Yu. P.

doi:10.1007/s12210-020-00903-z

Cited by 5 publications

(1 citation statement)

References 36 publications

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“…Further investigations are needed to characterize precipitates, distortion, and other features, possibly with the addition of neutron and X-ray diffraction (Merlino 2013;Allegra 2013;Artioli 2013;Dabagov et al 2020). Furthermore, a full UHV characterization on purposely-prepared metal AM vacuum parts is also necessary.…”

Section: Discussionmentioning

confidence: 99%

A multi-technique tomography-based approach for non-invasive characterization of additive manufacturing components in view of vacuum/UHV applications: preliminary results

Grazzi

Cialdai

Manetti

et al. 2021

Rend. Fis. Acc. Lincei

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In this paper, we have studied an additively manufactured metallic component, intended for ultra-high vacuum application, the exit-snout of the MACHINA transportable proton accelerator beam-line. Metal additive manufacturing components can exhibit heterogeneous and anisotropic microstructures. Two non-destructive imaging techniques, X-ray computed tomography and Neutron Tomography, were employed to examine its microstructure. They unveiled the presence of porosity and channels, the size and composition of grains and intergranular precipitates, and the general behavior of the spatial distribution of the solidification lines. While X-ray computed tomography evidenced qualitative details about the surface roughness and internal defects, neutron tomography showed excellent ability in imaging the spatial density distribution within the component. The anisotropy of the density was attributed to the material building orientation during the 3D printing process. Density variations suggest the possibility of defect pathways, which could affect high vacuum performances. In addition, these results highlight the importance of considering building orientation in the design for additive manufacturing for UHV applications. Graphical Abstract

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Section: Discussionmentioning

confidence: 99%

A multi-technique tomography-based approach for non-invasive characterization of additive manufacturing components in view of vacuum/UHV applications: preliminary results

Grazzi

Cialdai

Manetti

et al. 2021

Rend. Fis. Acc. Lincei

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Conclusive editorial on non-destructive techniques for cultural heritage

Fernández

Taccetti²,

Kenny

et al. 2020

Rend. Fis. Acc. Lincei

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scientists. The meeting was characterised by presentations and discussions about recent advances, research results and perspectives, as well as open problems and incoming activities where new technological developments are required. The increasing importance of non-invasive diagnostic techniques was highlighted, by putting into evidence how they allow for getting information about problems related to very different fields. Just to give an example among the many, one (Calderón et al. 2020) deals to reveal techniques used by the artists in order to have a preliminary basis for conservation/restoration interventions, another is focused on tracking ancient people movements (Cattaneo et al. 2020). Presented works address various issues, presenting different diagnostic methodologies, some based on large scale facilities (Pronti et al. 2020), others exploiting mobile instrumentation (Domenici et al. 2020). The papers cover different historical periods on both continents which span from archaeological (Sario et al. 2020) up to modern era. The contributions are essentially concentrated on applied research and applications to CH. Most of the papers are based on detection of electromagnetic (E.M.) radiation and complementary techniques, including, but not limiting to, XRF/XRF-imaging (Kriznar et al. 2020), XRF (Dabagov et al. 2020), SEM (Bruni et al. 2020), γ-rays transmission (Cesareo et al. 2020). Given the importance of this field for the community, a session was also dedicated to the interpretation of the detector response function of E.M. radiations. Innovative techniques and experimental setups have been proposed and tested. In the presented papers, the interdisciplinary approach is strong, as shown by the many cases where X-ray based techniques are integrated by other techniques, such as, for example, FT-IR, multispectral techniques (visible, UV, IRR) and Raman microscopy (Palamarczuk et al. 2020;Pronti et al. 2020;Martín and Nuevo 2020;Domenici et al. 2020). A new approach to implement effective low-cost, multiparameter conservation strategies in museums and artwork repositories has been presented, of great interest because it opens up the way to economically affordable, customized solutions suitable for all sites (Marcelli et al. 2020).

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