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