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Journal of Imaging, Volume 4, Issue 3

2018 March - 6 articles

Cover Story: This paper introduces a new neutron imaging facility, called IMAT, which is now well into its commissioning phase and is being prepared for user operation. One of the benefits of operating on a pulsed neutron source like ISIS is that neutron energies are determined via time of flight measurements, thus enabling energy-dispersive neutron imaging for maximizing image contrasts and for mapping microstructure properties of materials. We report the basic performance parameters and survey the infrastructure efforts that have been made to prepare the facility for a diverse range of disciplines such as engineering material science, battery research, earth science and cultural heritage. View this paper
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Articles (6)

  • Technical Note
  • Open Access
36 Citations
12,700 Views
22 Pages

A Python non-uniform fast Fourier transform (PyNUFFT) package has been developed to accelerate multidimensional non-Cartesian image reconstruction on heterogeneous platforms. Since scientific computing with Python encompasses a mature and integrated...

  • Article
  • Open Access
12 Citations
6,886 Views
9 Pages

Demonstration of Focusing Wolter Mirrors for Neutron Phase and Magnetic Imaging

  • Daniel S. Hussey,
  • Han Wen,
  • Huarui Wu,
  • Thomas R. Gentile,
  • Wangchun Chen,
  • David L. Jacobson,
  • Jacob M. LaManna and
  • Boris Khaykovich

Image-forming focusing mirrors were employed to demonstrate their applicability to two different modalities of neutron imaging, phase imaging with a far-field interferometer, and magnetic-field imaging through the manipulation of the neutron beam pol...

  • Article
  • Open Access
11 Citations
5,827 Views
15 Pages

CT-Based Micro-Mechanical Approach to Predict Response of Closed-Cell Porous Biomaterials to Low-Velocity Impact

  • Mehrdad Koloushani,
  • Reza Hedayati,
  • Mojtaba Sadighi and
  • Mohammad Mohammadi-Aghdam

In this study, a new numerical approach based on CT-scan images and finite element (FE) method has been used to predict the mechanical behavior of closed-cell foams under impact loading. Micro-structural FE models based on CT-scan images of foam spec...

  • Article
  • Open Access
63 Citations
13,559 Views
22 Pages

Time-of-Flight Neutron Imaging on IMAT@ISIS: A New User Facility for Materials Science

  • Winfried Kockelmann,
  • Triestino Minniti,
  • Daniel E. Pooley,
  • Genoveva Burca,
  • Ranggi Ramadhan,
  • Freddie A. Akeroyd,
  • Gareth D. Howells,
  • Chris Moreton-Smith,
  • David P. Keymer and
  • Jim Nightingale
  • + 23 authors

28 February 2018

The cold neutron imaging and diffraction instrument IMAT at the second target station of the pulsed neutron source ISIS is currently being commissioned and prepared for user operation. IMAT will enable white-beam neutron radiography and tomography. O...

  • Article
  • Open Access
7 Citations
5,743 Views
12 Pages

Energy-Resolved Neutron Imaging for Reconstruction of Strain Introduced by Cold Working

  • Anton S. Tremsin,
  • Winfried Kockelmann,
  • Joe F. Kelleher,
  • Anna M. Paradowska,
  • Ranggi S. Ramadhan and
  • Michael E. Fitzpatrick

28 February 2018

Energy-resolved neutron transmission imaging is used to reconstruct maps of residual strains in drilled and cold-expanded holes in 5-mm and 6.4-mm-thick aluminum plates. The possibility of measuring the positions of Bragg edges in the transmission sp...

  • Article
  • Open Access
7 Citations
7,702 Views
24 Pages

26 February 2018

Indirect Immuno-Fluorescence (IIF) microscopy imaging of human epithelial (HEp-2) cells is a popular method for diagnosing autoimmune diseases. Considering large data volumes, computer-aided diagnosis (CAD) systems, based on image-based classificatio...

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J. Imaging - ISSN 2313-433X