Gallery
1. Welded steel plates
2. Macro-strain imaging during tensile testing
3. Martensite phase in ferritic steel
4. Strain tensor tomography in Al shrink-fit ring and plug
5. Lithium-ion battery
6. Crystal orientation imaging of crystalline grains in Si-steel
7. Martensite phase in ferritic steel (HUNS)
8. Kitchen knife
9. Japanese sword
10. Information relating to dislocation
11. Damascus steel knife
12. CT imaging of crystalline phase volume fraction (ferrite and austenite)
13. Crystal defects in each crystalline grain
14. Solid-liquid phase fraction imaging during solidification of lead-bismuth eutectic
15. CT imaging of crystalline phase fraction (ferrite and martensite)
16. Thermography using inelastic neutron scattering analysis
1. Welded steel plates
Published paper
H. Sato, T. Kamiyama and Y. Kiyanagi, A Rietveld-Type Analysis Code for Pulsed Neutron Bragg-Edge Transmission Imaging and Quantitative Evaluation of Texture and Microstructure of a Welded α-Iron Plate, Materials Transactions, Volume 52, Number 6 (2011) 1294-1302.
Data analysis method
RITS (Rietveld-type whole Bragg-edge neutron transmission spectrum fitting)
Visualized information
- Crystallographic texture
- Preferred orientation
- Crystallite size
Neutron beamline
- HUNS (Hokkaido University Neutron Source)
- Coupled-type cold neutron source
Neutron TOF-imaging detector
GEM (gas electron multiplier) type
2. Macro-strain imaging during tensile testing
Published paper
K. Iwase, H. Sato, S. Harjo, T. Kamiyama, T. Ito, S. Takata, K. Aizawa and Y. Kiyanagi, In situ lattice strain mapping during tensile loading using the neutron transmission and diffraction methods, Journal of Applied Crystallography, Volume 45, Part 1 (2012) 113-118.
Data analysis method
Single Bragg-edge profile fitting
Visualized information
- Crystal lattice plane spacing
- Macro-strain
Neutron beamline
J-PARC MLF BL19 "TAKUMI"
Neutron TOF-imaging detector
Li-6 glass scintillator pixel type
3. Martensite phase in ferritic steel
Published paper
H. Sato, T. Sato, Y. Shiota, T. Kamiyama, A. S. Tremsin, M. Ohnuma and Y. Kiyanagi, Relation between Vickers Hardness and Bragg-Edge Broadening in Quenched Steel Rods Observed by Pulsed Neutron Transmission Imaging, Materials Transactions, Volume 56, Number 8 (2015) 1147-1152.
Data analysis method
Single Bragg-edge profile fitting
Visualized information
- Average value of distribution of crystal lattice plane spacing
- FWHM of distribution of crystal lattice plane spacing
Neutron beamline
J-PARC MLF BL10 "NOBORU"
Neutron TOF-imaging detector
MCP (micro channel plate) type
4. Strain tensor tomography in Al shrink-fit ring and plug
Published paper
H. Sato, Y. Shiota, T. Shinohara, T. Kamiyama, M. Ohnuma, M. Furusaka and Y. Kiyanagi, Development of the tensor CT algorithm for strain tomography using Bragg-edge neutron transmission, Physics Procedia, Volume 69 (2015) 349-357.
Data analysis method
Single Bragg-edge profile fitting
Tensor tomography
Visualized information
Tomographic macro-strain image
Neutron beamline
J-PARC MLF BL10 "NOBORU"
Neutron TOF-imaging detector
GEM (gas electron multiplier) type
5. Lithium-ion battery
Published paper
T. Kamiyama, Y. Narita, H. Sato, M. Ohnuma and Y. Kiyanagi, Structural Change of Carbon Anode in a Lithium-ion Battery Product Associated with Charging Process Observed by Neutron Transmission Bragg-edge Imaging, Physics Procedia, Volume 88 (2017) 27-33.
Data analysis method
Single Bragg-edge profile fitting
Visualized information
Average value of distribution of crystal lattice plane spacing
Neutron beamline
- HUNS (Hokkaido University Neutron Source)
- Coupled-type cold neutron source
Neutron TOF-imaging detector
GEM (gas electron multiplier) type
6. Crystal orientation imaging of crystalline grains in Si-steel
Published paper
H. Sato, Y. Shiota, S. Morooka, Y. Todaka, N. Adachi, S. Sadamatsu, K. Oikawa, M. Harada, S. Y. Zhang, Y. H. Su, T. Kamiyama, M. Ohnuma, M. Furusaka, T. Shinohara and Y. Kiyanagi, Inverse pole figure mapping of bulk crystalline grains in a polycrystalline steel plate by pulsed neutron Bragg-dip transmission imaging, Journal of Applied Crystallography, Volume 50, Part 6 (2017) 1601-1610.
Data analysis method
Multiple Bragg-dips wavelength pattern analysis
Visualized information
- Number of crystalline grains
- Crystal orientation of each grain
Neutron beamline
J-PARC MLF BL10 "NOBORU"
Neutron TOF-imaging detector
GEM (gas electron multiplier) type
7. Martensite phase in ferritic steel (HUNS)
Published paper
H. Sato, T. Sasaki, T. Moriya, H. Ishikawa, T. Kamiyama and M. Furusaka, High wavelength-resolution Bragg-edge/dip transmission imaging instrument with a supermirror guide-tube coupled to a decoupled thermal-neutron moderator at Hokkaido University Neutron Source, Physica B: Condensed Matter, Volume 551 (2018) 452-459.
Data analysis method
Single Bragg-edge profile fitting
Visualized information
- Average value of distribution of crystal lattice plane spacing
- FWHM of distribution of crystal lattice plane spacing
Neutron beamline
- HUNS (Hokkaido University Neutron Source)
- Poisoned- and Decoupled-type thermal neutron source (Cold neutron Δλ/λ = 1% (L = 6 m))
Neutron TOF-imaging detector
GEM (gas electron multiplier) type
8. Kitchen knife
Published paper
H. Sato, K. Mochiki, K. Tanaka, K. Ishizuka, H. Ishikawa, T. Kamiyama and Y. Kiyanagi, Bragg-edge neutron transmission spectrum analysis using a high-speed-camera-type time-of-flight neutron imaging detector, Nuclear Instruments and Methods in Physics Research Section A, Volume 943 (2019) 162501.
Data analysis method
RITS (Rietveld-type whole Bragg-edge neutron transmission spectrum fitting) 1
RITS (Rietveld-type whole Bragg-edge neutron transmission spectrum fitting) 2
Visualized information
- Crystalline phase
- Crystallographic texture
- Crystallite size
Neutron beamline
- HUNS (Hokkaido University Neutron Source)
- Coupled-type cold neutron source
Neutron TOF-imaging detector
High-speed camera type
9. Japanese sword
Published paper
H. Sato, Y. Kiyanagi, K. Oikawa, K. Ohmae, A. H. Pham, K. Watanabe, Y. Matsumoto, T. Shinohara, T. Kai, S. Harjo, M. Ohnuma, S. Morito, T. Ohba, A. Uritani and M. Itoh, Crystallographic microstructure study of a Japanese sword made by Noritsuna in the Muromachi period by pulsed neutron Bragg-edge transmission imaging, Materials Research Proceedings, Volume 15 (2020) 214-220.
Data analysis method
Single Bragg-edge profile fitting
RITS (Rietveld-type whole Bragg-edge neutron transmission spectrum fitting)
Visualized information
- Average value of distribution of crystal lattice plane spacing
- FWHM of distribution of crystal lattice plane spacing
- Martensite phase in ferritic steel
- Crystallographic texture
- Crystallite size
Neutron beamline
J-PARC MLF BL22 "RADEN"
Neutron TOF-imaging detector
GEM (gas electron multiplier) type
10. Information relating to dislocation
Published paper
H. Sato, K. Iwase, T. Kamiyama and Y. Kiyanagi, Simultaneous broadening analysis of multiple Bragg edges observed by wavelength-resolved neutron transmission imaging of deformed low-carbon ferritic steel, ISIJ International, Volume 60, Number 6 (2020) 1254-1263.
Data analysis method
Simultaneous multiple Bragg-edges profile fitting
Visualized information
Information relating to dislocation
Neutron beamline
J-PARC MLF BL19 "TAKUMI"
Neutron TOF-imaging detector
Li-6 glass scintillator pixel type
11. Damascus steel knife
Published paper
S. M. Cho, J. Y. Kim, T. J. Kim, H. Sato, I. W. Huh and N. C. Cho, Neutron imaging for metallurgical characteristics of iron products manufactured with ancient Korean iron making techniques, Nuclear Engineering and Technology, Volume 53, Issue 5 (2021) 1619-1625.
Data analysis method
Single Bragg-edge profile fitting
RITS (Rietveld-type whole Bragg-edge neutron transmission spectrum fitting)
Visualized information
- Average value of distribution of crystal lattice plane spacing
- FWHM of distribution of crystal lattice plane spacing
- Martensite phase in ferritic steel
- Crystallographic texture
- Crystallite size
Neutron beamline
- HUNS (Hokkaido University Neutron Source)
- Poisoned- and Decoupled-type thermal neutron source (Cold neutron Δλ/λ = 1% (L = 6 m))
Neutron TOF-imaging detector
GEM (gas electron multiplier) type
12. CT of crystalline phase volume fraction (ferrite and austenite)
Published paper
H. Sato, M. Sato, Y. H. Su, T. Shinohara and T. Kamiyama, Improvement of Bragg-edge neutron transmission imaging for evaluating the crystalline phase volume fraction in steel composed of ferrite and austenite, ISIJ International, Volume 61, Number 5 (2021) 1584-1593.
Data analysis method
RITS (Rietveld-type whole Bragg-edge neutron transmission spectrum fitting) 1
RITS (Rietveld-type whole Bragg-edge neutron transmission spectrum fitting) 2
RITS (Rietveld-type whole Bragg-edge neutron transmission spectrum fitting) 3
Visualized information
Austenite phase volume fraction in ferritic steel
Neutron beamline
J-PARC MLF BL22 "RADEN"
HUNS (Hokkaido University Neutron Source), Decoupled-type thermal neutron source
Neutron TOF-imaging detector
GEM (gas electron multiplier) type
13. Crystal defects in each crystalline grain
Published paper
Y. Sakurai, H. Sato, N. Adachi, S. Morooka, Y. Todaka and T. Kamiyama, Analysis and Mapping of Detailed Inner Information of Crystalline Grain by Wavelength-Resolved Neutron Transmission Imaging with Individual Bragg-Dip Profile-Fitting Analysis, Applied Sciences, Volume 11, Issue 11 (2021) 5219.
Data analysis method
Individual Bragg-dip profile fitting
Visualized information
- Small change of crystal orientation (< 0.4°)
- Mosaic block
- Another crystalline grain (~ 0.9°)
- Crystal defect
Neutron beamline
J-PARC MLF BL10 "NOBORU"
Neutron TOF-imaging detector
GEM (gas electron multiplier) type
14. Solid-liquid phase fraction imaging during solidification of lead-bismuth eutectic
Imaging of characteristics of neutron transmission spectrum by unsupervised machine learning (PCA)
Imaging of solid-liquid phase fraction by supervised machine learning (KNN)
Published paper
T. Kamiyama, K. Hirano, H. Sato, K. Ono, Y. Suzuki, D. Ito and Y. Saito, Application of machine learning methods to neutron transmission spectroscopic imaging for solid-liquid phase fraction analysis, Applied Sciences, Volume 11, Issue 13 (2021) 5988.
Data analysis method
Unsupervised machine learning (PCA)
Supervised machine learning (KNN)
Visualized information
- Characteristics of neutron transmission spectrum with statistical-error robustness (PCA)
- Solid-liquid phase fraction through spectral analysis with machine learning methods (PCA & KNN)
Neutron beamline
J-PARC MLF BL22 "RADEN"
Neutron TOF-imaging detector
GEM (gas electron multiplier) type
15. CT imaging of crystalline phase fraction (ferrite and martensite)
Published paper
H. Sato, A. Kusumi, Y. Shiota, H. Hayashida, Y. H. Su, J. D. Parker, K. Watanabe, T. Kamiyama and Y. Kiyanagi, Visualising martensite phase fraction in bulk ferrite steel by superimposed Bragg-edge profile analysis of wavelength-resolved neutron transmission imaging, ISIJ International, Volume 62, Number 11 (2022) 2319-2330.
Data analysis method
Superimposed Bragg-edges profile fitting
Visualized information
Martensite phase fraction in ferritic steel
Neutron beamline
J-PARC MLF BL22 "RADEN"
HUNS (Hokkaido University Neutron Source), Decoupled-type thermal neutron source
Neutron TOF-imaging detector
μPIC (micro pixel chamber) type
GEM (gas electron multiplier) type
16. Thermography using inelastic neutron scattering analysis
