Institute of Fundamental Technological Research
Polish Academy of Sciences

Partners

Hyeung-Tae Kim

Recent publications

Kim H.T.^♦, Razakamandimby D.F.T.^♦, Szilagyi V.^♦, Kis Z.^♦, Szentmiklosi L.^♦, Glinicki M.A., Park K.^♦, Reconstruction of concrete microstructure using complementarity of X-ray and neutron tomography, CEMENT AND CONCRETE RESEARCH, ISSN: 0008-8846, DOI: 10.1016/j.cemconres.2021.106540, Vol.148, pp.106540-1-12, 2021

Abstract:
The concrete microstructure was successfully reconstructed using the complementarity of X-ray and neutron computed tomography (CT). Neither tomogram alone was found to be suitable to properly describe the microstructure of concrete under this study. However, by merging the information revealed by the two modalities, and using image segmentation, noise reduction, and image registration techniques we reconstruct the concrete microstructure. Void, aggregate, and cement paste phases are successfully captured down to the images' spatial resolution, even though the aggregate consists of multiple minerals. The coarse-aggregate volume fraction of the reconstructed microstructure was similar to that of the mixing proportions. Furthermore, image-based finite element analysis is performed to demonstrate the effects of microstructure on stress concentration and strain localization.

Keywords:
concrete microstructure, X-ray tomography, neutron tomography, image segmentation, complementarity field, image-based analysis

Affiliations:

Kim H.T.	-	other affiliation
Razakamandimby D.F.T.	-	other affiliation
Szilagyi V.	-	other affiliation
Kis Z.	-	other affiliation
Szentmiklosi L.	-	other affiliation
Glinicki M.A.	-	IPPT PAN
Park K.	-	other affiliation

Conference abstracts

Golasiński K.M., Maj M., Tasaki W.^♦, Pieczyska E.A., Kim H.Y.^♦, TENSILE LOADING OF Ti-25Nb-0.7O SHAPE MEMORY ALLOY MONITORED BY INFRARED THERMOGRAPHY AND DIGITAL IMAGE CORRELATION, QIRT 2024, 17th Quantitative Infrared Thermography Conference, 2024-07-01/07-05, Zagreb (HR), No.5, 5-B, pp.93-93, 2024

Golasiński K.M., Maj M., Tasaki W.^♦, Pieczyska E.A., Kim H.Y.^♦, Lüders-type deforma0on of Ti-25Nb shape memory alloy in tension inspected by digital image correlation and infrared thermography, ESOMAT 2024, 13th European Symposium on Martensitic Transformations, 2024-08-26/08-30, Lecco (IT), pp.042-042, 2024

Golasiński K.M., Ranachowski Z., Brodecki A., Tasaki W.^♦, Urbański L., Pieczyska E.A., Kim H.Y.^♦, Acoustic emission study of Ti-25Nb and Ti-25Nb-1.0O shape memory alloys in the initial stage deformation, SolMech 2024, 43rd Solid Mechanics Conference, 2024-09-16/09-18, Wrocław (PL), pp.103-103, 2024

Keywords:
Ni-free shape memory alloys, interstitials atoms, stress-induced phase transformation, acoustic emission

Affiliations:

Golasiński K.M.	-	IPPT PAN
Ranachowski Z.	-	IPPT PAN
Brodecki A.	-	IPPT PAN
Tasaki W.	-	other affiliation
Urbański L.	-	IPPT PAN
Pieczyska E.A.	-	IPPT PAN
Kim H.Y.	-	other affiliation

Golasiński K.M., Tasaki W.^♦, Maj M., Pieczyska E.A., Kim H.Y.^♦, EFFECT OF OXYGEN ON MECHANICAL BEHAVIOR OF Ti-25Nb BASED SHAPE MEMORY ALLOYS, ICEM, 19th International Conference on Experimental Mechanics, 2022-07-17/07-21, Kraków (PL), pp.284-285, 2022