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Dynamic multicontrast X-ray imaging method applied to additive manufacturing
DOI:
10.1103/PhysRevLett.127.215503
Authors:
Lorenzo
Massimi
(University College London)
,
Samuel J.
Clark
(University College London)
,
Sebastian
Marussi
(University College London)
,
Adam
Doherty
(University College London)
,
Joachim
Schulz
(MicroWorks GmbH; Karlsruhe Institute of Technology)
,
Shashidhara
Marathe
(Diamond Light Source)
,
Christoph
Rau
(Diamond Light Source)
,
Marco
Endrizzi
(University College London)
,
Peter D.
Lee
(University College London)
,
Alessandro
Olivo
(University College London)
Co-authored by industrial partner:
No
Type:
Journal Paper
Journal:
Physical Review Letters
, VOL 127
State:
Published (Approved)
Published:
November 2021
Diamond Proposal Number(s):
23760
Abstract: We present a dynamic implementation of the beam-tracking x-ray imaging method providing absorption, phase, and ultrasmall angle scattering signals with microscopic resolution and high frame rate. We demonstrate the method’s ability to capture dynamic processes with 22-ms time resolution by investigating the melting of metals in laser additive manufacturing, which has so far been limited to single-modality synchrotron radiography. The simultaneous availability of three contrast channels enables earlier segmentation of droplets, tracking of powder dynamic, and estimation of unfused powder amounts, demonstrating that the method can provide additional information on melting processes.
Diamond Keywords: Additive Manufacturing
Subject Areas:
Materials,
Physics,
Technique Development
Instruments:
I13-2-Diamond Manchester Imaging
Added On:
24/11/2021 14:01
Discipline Tags:
Physics
Technique Development - Physics
Materials Science
Technical Tags:
Imaging
Tomography