Kootahi, Karim and Kwan Leung, Anthony and Jiang, Zhenliang and Liu, Jianbin and Qi, Rui and Lourenço, Sérgio D.N. and Lai, Zhengshou and Gao, Zhiwei (2024) Evaluation of the methods of particle morphology characterization: CT scanning, digital imaging and light microscopy. Computers and Geotechnics, 174: 106648. ISSN 0266-352X
AI Summary:
The morphology of granular materials can be characterized using different measurement techniques. This study evaluated the efficacy of four dynamic image analysis devices and a light microscope with reference to micro-computed tomography results.AI Topics:
The morphology of granular materials can be characterized two or three-dimensionally by different measurement techniques such as micro-computed tomography (μCT), static and dynamic image analysis (SIA and DIA). Because there are fundamental differences in the working principles among these techniques, their efficacy in characterizing the morphology of granular particles needs to be precisely examined but has not yet been scientifically evaluated. In this study, a systematic evaluation of the efficacy of four DIA devices and a light microscope (LM) with reference to μCT was made by selecting statistically representative samples of three standard sands which covered a wide range of particle form and angularity. Morphological data of these sands were used and probability distributions obtained from the different imaging techniques were compared with μCT results using a precise quantitative measure based on the information theory. The results revealed that most of the DIA devices chosen were capable of providing accurate measurements for the coarse descriptors such as aspect ratio in sands across a broad particle size range, whereas some devices require improvement in their camera resolution to produce accurate measurements for fine sands. Modifying device configuration and/or computational algorithm to either use the captured image with the largest area or obtain an average from multiple random projections in the order of 100 can improve the accuracy of morphology characterization in DIA devices. LM with proper imaging and image processing can provide results comparable to μCT.
Kootahi, Karim
Author
Kootahi, Karim and Kwan Leung, Anthony and Jiang, Zhenliang and Liu, Jianbin and Qi, Rui and Lourenço, Sérgio D.N. and Lai, Zhengshou and Gao, Zhiwei (2024) Evaluation of the methods of particle morphology characterization: CT scanning, digital imaging and light microscopy. Computers and Geotechnics, 174: 106648. ISSN 0266-352X
See full publications listKwan Leung, Anthony
Author
Kootahi, Karim and Kwan Leung, Anthony and Jiang, Zhenliang and Liu, Jianbin and Qi, Rui and Lourenço, Sérgio D.N. and Lai, Zhengshou and Gao, Zhiwei (2024) Evaluation of the methods of particle morphology characterization: CT scanning, digital imaging and light microscopy. Computers and Geotechnics, 174: 106648. ISSN 0266-352X
See full publications listJiang, Zhenliang
Author
Kootahi, Karim and Kwan Leung, Anthony and Jiang, Zhenliang and Liu, Jianbin and Qi, Rui and Lourenço, Sérgio D.N. and Lai, Zhengshou and Gao, Zhiwei (2024) Evaluation of the methods of particle morphology characterization: CT scanning, digital imaging and light microscopy. Computers and Geotechnics, 174: 106648. ISSN 0266-352X
See full publications listLiu, Jianbin
Author
Kootahi, Karim and Kwan Leung, Anthony and Jiang, Zhenliang and Liu, Jianbin and Qi, Rui and Lourenço, Sérgio D.N. and Lai, Zhengshou and Gao, Zhiwei (2024) Evaluation of the methods of particle morphology characterization: CT scanning, digital imaging and light microscopy. Computers and Geotechnics, 174: 106648. ISSN 0266-352X
See full publications listQi, Rui
Author
Kootahi, Karim and Kwan Leung, Anthony and Jiang, Zhenliang and Liu, Jianbin and Qi, Rui and Lourenço, Sérgio D.N. and Lai, Zhengshou and Gao, Zhiwei (2024) Evaluation of the methods of particle morphology characterization: CT scanning, digital imaging and light microscopy. Computers and Geotechnics, 174: 106648. ISSN 0266-352X
See full publications listLourenço, Sérgio D.N.
Author
Kootahi, Karim and Kwan Leung, Anthony and Jiang, Zhenliang and Liu, Jianbin and Qi, Rui and Lourenço, Sérgio D.N. and Lai, Zhengshou and Gao, Zhiwei (2024) Evaluation of the methods of particle morphology characterization: CT scanning, digital imaging and light microscopy. Computers and Geotechnics, 174: 106648. ISSN 0266-352X
See full publications listLai, Zhengshou
Author
Kootahi, Karim and Kwan Leung, Anthony and Jiang, Zhenliang and Liu, Jianbin and Qi, Rui and Lourenço, Sérgio D.N. and Lai, Zhengshou and Gao, Zhiwei (2024) Evaluation of the methods of particle morphology characterization: CT scanning, digital imaging and light microscopy. Computers and Geotechnics, 174: 106648. ISSN 0266-352X
See full publications listGao, Zhiwei
Author
Li, Xin and Gao, Zhiwei and Lu, Liang (2025) Numerical investigation on the response of ground-reinforced embankments under repeated impact. Engineering Geology, 345: 107875. ISSN 0013-7952
Kootahi, Karim and Kwan Leung, Anthony and Jiang, Zhenliang and Liu, Jianbin and Qi, Rui and Lourenço, Sérgio D.N. and Lai, Zhengshou and Gao, Zhiwei (2024) Evaluation of the methods of particle morphology characterization: CT scanning, digital imaging and light microscopy. Computers and Geotechnics, 174: 106648. ISSN 0266-352X
Li, Xin and Gao, Zhiwei (2024) Evaluation of three weight functions for nonlocal regularisation of sand models. International Journal of Geomechanics, 24 (7): 04024125. ISSN 1532-3641
See full publications listRestricted to Repository staff only until 8 August 2025.
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