Numerical model calculation of X-ray framing camera

Recent experiments resolved nucleation and growth of graphite during solidification of ductile cast iron in 4D using synchrotron X-ray tomography. A numerical model for microstructure formation during solidification is compared with the experiments. Despite very good overall agreement between observations of spheroidal graphite growth and model results, significant deviations exist towards the end of solidification. We use the experimental observations to analyse the relation between graphite growth rate and the state of the particle neighbourhood to pinpoint possible links between growth rate of individual graphite spheres and the overall solidification state. With this insight we revisit existing models for growth of spheroidal graphite and discuss possible modifications in order to correctly describe the critical final stage of solidification.

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Development of single frame and double-channel X-ray framing camera system for SG-Ⅲ laser facility

High Power Laser and Particle Beams ◽

10.3788/hplpb20142610.102001 ◽

2014 ◽

Vol 26 (10) ◽

pp. 102001

Author(s):

李晋 Li Jin ◽

杨志文 Yang Zhiwen ◽

杨品 Yang Pin ◽

杨正华 Yang Zhenghua ◽

董建军 Dong Jianjun ◽

...

Keyword(s):

Camera System ◽

X Ray ◽

Single Frame ◽

Laser Facility ◽

Double Channel ◽

Framing Camera

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In-Vitro Head and Neck Response to Impact

Journal of Biomechanical Engineering ◽

10.1115/1.3138427 ◽

1983 ◽

Vol 105 (4) ◽

pp. 316-320 ◽

Cited By ~ 1

Author(s):

J. M. Kabo ◽

W. Goldsmith ◽

N. M. Harris

Keyword(s):

Head And Neck ◽

Vertebral Fractures ◽

X Ray ◽

Head Neck ◽

Framing Camera

Two unembalmed and one embalmed human cadaveric head-neck systems were instrumented and subjected to central forehead impact of ballistically suspended 3.07-kg aluminum shell at velocities ranging from 50 to 345 cm/s. Occipital skull accelerations and disk pressures were measured by transducers, while the deformation of the system was determined by framing camera data. The results were found to be in accord with those from corresponding tests in artifical head-neck replica. Initial and terminal X-ray examination of the structure revealed no evidence of either skull or vertebral fractures.

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GEOMETRICAL ABERRATIONS IN THE VON HAMOS AND THE PLANE BRAGG CRYSTAL SPECTROMETERS

International Journal of PIXE ◽

10.1142/s0129083597000151 ◽

1997 ◽

Vol 07 (03n04) ◽

pp. 117-133 ◽

Cited By ~ 3

Author(s):

T. Tadic ◽

Y. Mokuno ◽

Y. Horino ◽

M. Jaksic

Keyword(s):

Numerical Model ◽

Ray Tracing ◽

Numerical Calculations ◽

X Ray Diffraction ◽

Pixe Analysis ◽

X Ray ◽

Analytical Studies ◽

Position Sensitive ◽

Produce Line

Numerical calculations of the effect of the finite dimensions and orientations of source and crystal are presented for plane and von Hamos Bragg crystal spectrometers for PIXE analysis, combined with a position sensitive (X-ray) detector. Analytical studies of all effects are provided. It is shown that some parameters can produce line shifts and asymmetries. A numerical model for an X-ray diffraction ray-tracing procedure for a crystal Bragg spectrometer is described.

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