23 papers · ranked by Valyu relevance
H. Jeremy Cho, Nancy Lu, Michael P. Howard, Rebekah A. Adams + 1 more
'Sujit S. Datta'] Many clays, soils, biological tissues, foods, and coatings are shrinkable, granular materials: they are composed of packed, hydrated grains that shrink when dried. In many cases, these packings crack during drying, critically hindering applications. However, while cracking has been widely studied for…
Authors not listed
To understand fracture behaviour in battery materials, X-ray computed tomography (X-ray CT) has become the primary technique for non-destructive particle analysis. Cracking causes performance decline in polycrystalline NMC811 by exposing new surfaces for parasitic electrolyte reactions and disconnecting active material…
Xiaoqing Zhang, Jialin Wang, Zhijian Yi, Tuo Zhang + 3 more
Reinforced concrete (RC) structures are susceptible to crack initiation and propagation during service, making accurate numerical simulation of crack behavior essential for assessing structural durability and safety. Current numerical approaches for simulating concrete cracking include smeared/continuum approaches…
Yan-San Huang, Pei-Lin Chiang, Ying-Chuan Kao, Fu-Lan Hsu + 1 more
'Jia-Yang Juang'] Understanding the failure modes of curved hollow tree trunks is essential from both safety and conservation perspectives. Despite extensive research, the underlying mechanism that determines the cracking failure of curved hollow tree trunks remains unclear due to the lack of theoretical analysis that…
Barbara Goszczyńska, Wiesław Trąmpczyński, Justyna Tworzewska, Lukasz Sadowski
'Lukasz Sadowski'] The reliability and durability of reinforced concrete structures depend on the amount of concrete cracking. The risk associated with cracks generates a need for diagnostic methods for the evaluation of reinforced concrete structures. This paper presents the results of a study of 10 single-span…
Lucas Goehring
When cracks form in a thin contracting layer, they sequentially break the layer into smaller and smaller pieces. A rectilinear crack pattern encodes information about the order of crack formation, as later cracks tend to intersect with earlier cracks at right angles. In a hexagonal pattern, in contrast, the angles…
Eran Bouchbinder, Tamar Goldman, Jay Fineberg
The failure of materials and interfaces is mediated by cracks, nearly singular dissipative structures that propagate at velocities approaching the speed of sound. Crack initiation and subsequent propagation – the dynamic process of fracture – couples a wide range of time and length scales. Crack dynamics challenge our…
Pierre Rossi, Xiaoqing Xu, Xiaowei Deng
This paper focuses on the use of numerical tools, as a finite elements method, to conceive fiber reinforced concrete (FRC) eco-constructions. It highlights the fact that these are the most suitable tools (much more than the Eurocodes, for example) to predict the cracking process of FRC constructions at their service…
Sergey Gorelick, Sylvain Trépout, Sailakshmi Velamoor, Patrick Cleeve + 1 more
Preparing electron-transparent cryo-lamellae is inherently a serial and low-throughput process. Once the lamellae are milled, these thin structures endure both mechanical and thermal stress, and as a result many valuable lamellae crack or even disintegrate entirely. This loss is often regarded as a “lamella tax”, i.e.…
Authors not listed
Mesoporosity and extra-framework aluminum (EFAL) species often form during post-treatment of Y-type zeolites, such as steaming or dealumination, and can significantly influence catalytic performance in fluid catalytic cracking (FCC). However, their individual effects on Brønsted acidity and intrinsic catalytic activity…
Hongmei Liu, Faxu Li, Jingqiang He, Wenlong Wang + 1 more
To address severe equipment vibration and large load fluctuations during hard-rock excavation, this study proposes mechanical pre-cracking as a preparatory treatment. A hard-rock model containing pre-cracked holes is developed using the discrete element method; the crack initiation and propagation induced by a…
Csanád Szuszik, Ian G. Main, Ferenc Kun
We test the hypothesis that loading conditions affect the statistical features of crackling noise accompanying the failure of porous rocks by performing discrete element simulations of the tensile failure of model rocks and comparing the results to those of compressive simulations of the same samples. Cylindrical…
Hassan Saad, Thierry Douillard, Annie Malchère, Philippe Steyer + 3 more
Nacre-like aluminas are bio-inspired, ceramic-based composites that display high toughness and strength. Their toughness arises from their brick-and-mortar microstructure. We must understand the role of several microstructural features over their mechanical properties. Techniques that allow microstructural imaging…
Lydia V. Luncz, Nora E. Slania, Katarina Almeida-Warren, Susana Carvalho + 5 more
The archaeological record offers insights into our evolutionary past by revealing ancient behaviour through stone and fossil remains. Percussive foraging is suggested to be particularly relevant for the emergence of tool-use in our lineage, yet early hominin percussive behaviours remain largely understudied compared to…
Elisa Bandini, Johannes Grossmann, Anna Albiach Serrano, Claudio Tennie
Several species of non-human apes have been suggested to rely on copying to acquire some of their behavioural forms. One of the most cited examples – and UN-protected – is nut-cracking in chimpanzees. However, copying might not be the most parsimonious explanation for nut-cracking, considering the lack of evidence for…
Olivia Ward, Aditya Kumar
Predicting the growth of large cracks in brittle materials is a fundamental unresolved problem in fracture mechanics. Under out-of-plane shear loading, an initially planar crack may fragment into multiple cracks, forming an echelon crack pattern. Explaining this phenomenon is essential for developing a general theory…
E Howard-Spink, T Matsuzawa, S Carvalho, C Hobaiter + 3 more
We know vanishingly little about how long-lived apes experience senescence in the wild, particularly with respect to their foraging behaviors, which are essential for survival. Some wild apes use tools during foraging and, given the additional cognitive and physical challenges presented by tool use, we predict that…
Authors not listed
Electro-chemo-mechanical degradation pathways which significantly impact performance of ceramic (e.g., LiCoO2) battery electrodes are a strong function of bulk crystallographic texture, crystal size and interfacial misorientation angle. Via electrodeposition, deterministic synthesis of textured thick (>10 µm) films of…
D. Uribe, M. Delbo, P. -O. Bouchard, D. Pino Muñoz
direction of fractures on asteroids: theoretical model for the case of Bennu Authors: ['D. Uribe' 'M. Delbo' 'P. -O. Bouchard' 'D. Pino Muñoz'] It has been shown that temperature cycles on airless bodies of our Solar System can cause damaging of surface materials. Nevertheless, propagation mechanisms in the case of…
Authors not listed
The recent discovery of the self-healing capabilities of molecular crystals has shown significant efficiency, approaching nearly 100%, particularly when this process is coupled with a phase transition. This places these materials on par with other, better-studied soft materials, such as polymers. However, the physical…
Suraj Reddy
This paper presents a deeper understanding of the effect of interface orientation and varying defect density within the interface on toughness in 2D media. Our study focuses on a pre-deflected crack that has a majority of its length parallel to the line of symmetry in the horizontal direction, with a small deflected…
Katarina Almeida-Warren, Tetsuro Matsuzawa, Susana Carvalho
Ecology is fundamental to the development, transmission, and perpetuity of primate technology. Previous studies on tool site selection have addressed the relevance of targeted resources and raw materials for tools, but few have considered the broader foraging landscape. In this first landscape-scale study of the…
Authors not listed
Power and energy density represent a trade-off in design of lithium-ion batteries. This is because for high energy density thick electrodes are required, and for high power density thin electrodes are required. A strategy to break this trade-off is to develop electrodes with regions of low tortuosity (e.g. cracks or…