Review
Engineering, Geological
Abbas El-Zein, David Airey, Bowei Yu, Golnaz Alipour Esgandani, Gwenaelle Proust, Daniel Dias-da-Costa, Yifei Gao, Yixiang Gan, Shunzhi Chen
Summary: Research on clay self-repair has been limited and under-theorised, with a lack of understanding on the mechanisms and processes involved. This paper reviews the literature on clay self-repair, focusing on the autogenous self-repair of clay under different conditions, discussing theories proposed in the literature, pointing out the gaps in knowledge, and proposing ways to address them in future research.
Article
Environmental Sciences
Katie A. Gilmour, Colin T. Davie, Neil Gray
Summary: This study investigates the effects of microbes, especially iron-reducing bacteria, on MX80 bentonite's function as a barrier in long-term deep geological storage of nuclear waste. The research reveals that iron-reducing bacteria and other indigenous species can survive high temperature and low water conditions, potentially leading to mineralogical changes and reduction of Fe(III) to Fe(II) in the clay. Moreover, microbial presence reduces steel corrosion, possibly resulting in a protective coating or depleted oxygen levels.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Computer Science, Interdisciplinary Applications
Qian-Feng Gao, Ling Zeng, Zhen-Ning Shi
Summary: The study examines the shallow stability of a red clay cut slope during rainfall and finds that the presence of desiccation cracks can cause shallow failure, reducing the factor of safety. Control of crack development is crucial for slope safety, and vegetation with longer roots significantly improves slope stability.
COMPUTERS AND GEOTECHNICS
(2021)
Article
Chemistry, Analytical
Xiangyang Li, Yao Chen, Changshou Hong, Xingwang Dai, Yifan Chen, Dongying Lin, Chengyan Yan, Yong Liu
Summary: The soil covering method in uranium tailings pond beach management can be affected by the materials used and environmental factors, which can impact long-term safety and stability. A study tested the effects of different concentrations of CaCl2 solution on desiccation crack development and radon retardation in red clay. Results showed that the soil mineral composition remained unchanged and the crack rate decreased with increased CaCl2 solution concentration, with the best radon retardation achieved at a 3% concentration. These findings can provide guidance for effective radon treatment on uranium tailings pond beach surfaces.
JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY
(2023)
Article
Engineering, Geological
Longyong Tong, Hang Zhou, Hanlong Liu, Xuanming Ding
Summary: This paper investigates the limit resistances and failure envelope of underground urban rectangular pipe galleries (URPGs) in undrained clay. The study is conducted using two-dimensional finite-element limit analysis, and empirical equations are derived for the limit resistance and failure envelope of URPGs. The proposed empirical equations are verified and provide a basis for the pipe-soil interaction.
INTERNATIONAL JOURNAL OF GEOMECHANICS
(2023)
Article
Geosciences, Multidisciplinary
Yanbo Zhu, Huitao Zheng, Hengxing Lan, Yaowen Liu, Langping Li, Boyu Fu, Changcheng Du
Summary: This study investigated the self-healing behavior of desiccation cracks in compacted clayey soils and found that it is influenced by the initial water content and dry density. Higher initial water content and lower dry density result in larger self-healing amount. This difference in self-healing is caused by the vertical anisotropic shrinkage of substrate soil below non-propagating cracks.
FRONTIERS IN EARTH SCIENCE
(2022)
Article
Chemistry, Physical
Mehdi Ghasemi, Sina Omrani, Saeed Mahmoodpour, Tianhang Zhou
Summary: This study uses Molecular Dynamics simulation to predict the diffusion coefficient of hydrogen in different water-saturated clay minerals and assess the effects of clay mineral characteristics on hydrogen diffusion. The results show that the diffusion of hydrogen significantly increases in negatively charged clay minerals for pore sizes smaller than 2 nm, while no considerable changes are observed for pore sizes larger than 2 nm. The hydrogen diffusion coefficient in pyrophyllite increases monotonically with pore size.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Engineering, Civil
Richard Giot, Stephen Hedan, Philippe Cosenza
Summary: Optical metrology monitoring revealed the presence of desiccation cracks sensitive to relative humidity variations in a gallery. These cracks close in summer when the relative humidity is high, and open in winter when the relative humidity is lower. The cracks exhibit different opening kinematics, possibly due to differences in penetration within the rock mass. A coupled hydro-mechanical numerical modeling was used to investigate the relationship between crack opening and penetration.
EUROPEAN JOURNAL OF ENVIRONMENTAL AND CIVIL ENGINEERING
(2023)
Article
Materials Science, Multidisciplinary
J. C. Stinville, T. Francis, A. T. Polonsky, C. J. Torbet, M. A. Charpagne, Z. Chen, G. H. Balbus, F. Bourdin, V. Valle, P. G. Callahan, M. P. Echlin, T. M. Pollock
Summary: This study developed a methodology for conducting time-resolved digital image correlation in the SEM to analyze time-dependent mechanical deformation phenomena. Experimental investigation of microscope and electron beam scanning parameters that influence the rate at which time-resolved DIC information is mapped was conducted, and time-resolved DIC imaging was successfully demonstrated on a Ti-7Al alloy.
EXPERIMENTAL MECHANICS
(2021)
Article
Materials Science, Multidisciplinary
M. A. Charpagne, J. M. Hestroffer, A. T. Polonsky, M. P. Echlin, D. Texier, V. Valle, I. J. Beyerlein, T. M. Pollock, J. C. Stinville
Summary: This study investigates the slip localization behavior of the polycrystalline nickel base superalloy Inconel 718 during monotonic tensile loading at room temperature in relation to the 3D microstructure. Statistical analyses revealed strong correlations between slip band locations and specific microstructure configurations, with over half of the slip bands emanating from triple junction lines. Crystal plasticity finite elements calculations were performed on the experimental microstructure to identify the characteristics of slip activity in different microstructure regions.
Article
Materials Science, Multidisciplinary
S. Hemery, J. C. Stinville, F. Wang, M. A. Charpagne, M. G. Emigh, T. M. Pollock, V. Valle
Summary: The study identified a unique crack nucleation mechanism involving strain localization at (0001) twist boundaries in titanium alloys, with crack initiation preferentially occurring at twist angles spanning the 10 degrees - 20 degrees range. The (0001) twist boundaries are preferred locations for early and intense strain localization, and deformation prior to crack initiation proceeds via shear along these boundaries.
Article
Engineering, Biomedical
P. Bokam, A. Germaneau, C. Breque, P. Rigoard, T. Vendeuvre, V. Valle
Summary: This study determined the fracture properties of human cancellous bone-bone cement interface, bovine cancellous bone-bone cement interface, and PF-bone cement interface using an integrated methodology. Results suggest that it may not be appropriate to use bovine cancellous bone or PF as substitutes for human cadaveric cancellous bone in biomechanical studies.
JOURNAL OF THE MECHANICAL BEHAVIOR OF BIOMEDICAL MATERIALS
(2021)
Article
Materials Science, Multidisciplinary
Jonathan M. Hestroffer, Marat Latypov, Jean-Charles Stinville, Marie-Agathe Charpagne, Valery Valle, Matthew P. Miller, Tresa M. Pollock, Irene J. Beyerlein
Summary: This study investigates the evolution of intragranular lattice rotations and slip activity in a high performance, polycrystalline face centered cubic material during monotonic and cyclic loading using a combination of in-situ high-resolution digital image correlation (HR-DIC), Heaviside-DIC method (H-DIC), and crystal plasticity finite element (CPFE). The results show that most grains develop intragranular lattice rotation gradients that span the grain, regardless of their size and lattice orientation. The analysis of slip lines reveals agreement in the active slip systems and changes in local slip activity across individual grains. The findings suggest that deforming grains are divided into sub-granular regions of uniform lattice rotation, most often associated with one or two active slip systems.
Article
Engineering, Geological
Stephen Hedan, Valery Valle, Richard Giot, Philippe Cosenza
Summary: This study explores the mixed-mode behavior of desiccation cracks in a clayey rock gallery and the advances in digital image correlation algorithms that allow for the automatic detection of displacement jumps and sliding of cracks. The results show a linear relationship between solid phase deformation and crack porosity, and indicate that most desiccation cracks evolve in a mixed-mode with comparable shear and opening values.
INTERNATIONAL JOURNAL OF ROCK MECHANICS AND MINING SCIENCES
(2022)
Article
Materials Science, Multidisciplinary
J. C. Stinville, W. Ludwig, P. G. Callahan, M. P. Echlin, V. Valle, T. M. Pollock, H. Proudhon
Summary: This study enables imaging of bulk slip events within the 3D microstructure through the combined use of X-ray diffraction contrast tomography and topotomography. Correlative measurements were performed using various methods to validate the observation of slip events and significant differences were found between bulk and surface grains, highlighting the need for 3D observations to better understand deformation in polycrystalline materials.
MATERIALS CHARACTERIZATION
(2022)
Article
Multidisciplinary Sciences
J. C. Stinville, J. M. Hestroffer, M. A. Charpagne, A. T. Polonsky, M. P. Echlin, C. J. Torbet, V. Valle, K. E. Nygren, M. P. Miller, O. Klaas, A. Loghin, I. J. Beyerlein, T. M. Pollock
Summary: The development of high-fidelity mechanical property prediction models relies on large volumes of microstructural feature data. However, spatially correlated measurements of 3D microstructure and deformation fields have been rare. This study presents a unique multi-modal dataset that combines state-of-the-art experimental techniques for 3D tomography and high-resolution deformation field measurements.
Article
Biotechnology & Applied Microbiology
A. Moufid, P. Bokam, G. Harika-Germaneau, M. Severyns, L. Caille, V. Valle, T. Vendeuvre, A. Germaneau
Summary: This study conducted in vitro animal experimentation to investigate the effect of cementoplasty in bone fractures. The results showed that there is no load transfer between bone and cement, and the cement behaves like a rigid body inside the cancellous bone.
FRONTIERS IN BIOENGINEERING AND BIOTECHNOLOGY
(2022)
Article
Multidisciplinary Sciences
J. C. Stinville, M. A. Charpagne, A. Cervellon, S. Hemery, F. Wang, P. G. Callahan, V. Valle, T. M. Pollock
Summary: In this study, the physical origins of fatigue strength in metallic materials were investigated by observing the nanoscale deformation processes of individual materials at the earliest stages of cycling. The quantitative relationships between yield strength and other physical characteristics were identified, and a method for predicting fatigue strength based on slip localization amplitude was proposed.
Article
Engineering, Mechanical
C. Bean, F. Wang, M. A. Charpagne, P. Villechaise, V. Valle, S. R. Agnew, D. S. Gianola, T. M. Pollock, J. C. Stinville
Summary: Additively manufactured 316L stainless steels exhibit higher yield strength due to their unique microstructural features. Investigation of plastic localization at the sub-grain scale reveals significant heterogeneous slip localization in additively manufactured 316L stainless steels compared to conventionally manufactured ones.
INTERNATIONAL JOURNAL OF PLASTICITY
(2022)
Article
Engineering, Multidisciplinary
Elie Gautreau, Xavier Bonnet, Tom Fox, Guillaume Fosseries, Valery Valle, Anthony Herrel, Med Amine Laribi
Summary: This study compared several methods to characterize the kinematics of swimming snakes and found that each method has its advantages and limitations. Marker tracking provides accurate data, motion capture provides limited 3D data, markerless pose estimation is efficient in extracting data under various experimental conditions, and automatic video processing can extract a wide range of useful data.
JOURNAL OF BIONIC ENGINEERING
(2023)
Article
Materials Science, Multidisciplinary
R. L. Black, T. Garbowski, C. Bean, A. L. Eberle, S. Nickell, D. Texier, V. Valle, J. C. Stinville
Summary: Recent advancements in high-resolution digital image correlation (HR-DIC) have improved the spatial resolution and measurement sensitivity, allowing for quantitative measurement of deformation events and understanding deformation mechanisms. This study applies a novel SEM acquisition technology to enhance HR-DIC measurements for high throughput applications.
EXPERIMENTAL MECHANICS
(2023)
Article
Optics
Mohamed Yessine Jedidi, Valery Valle
Summary: This study aims to determine the plastic deformation of CP-Ti sheets during metal forming processes at room temperature, using experimental tests and digital image correlation (DIC) and Heaviside-DIC (H-DIC) techniques. The forming limit diagrams (FLDs) of CP-Ti sheets in different strain paths are determined, and the localized deformation of the sheets' materials and its impact on ductility during forming processes are investigated.
OPTICS AND LASERS IN ENGINEERING
(2023)