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- ArticleJuly 2024
A Three-Dimensional Fluid-Structure Interaction Model for Platelet Aggregates Based on Porosity-Dependent Neo-Hookean Material
AbstractThe stability of the initial platelet aggregates is relevant in both hemostasis and thrombosis. Understanding the structural stresses of such aggregates under different flow conditions is crucial to gaining insight into the role of platelet ...
- research-articleMarch 2024
Analysis of a thermoelastic problem with the Moore–Gibson–Thompson microtemperatures
Journal of Computational and Applied Mathematics (JCAM), Volume 438, Issue Chttps://doi.org/10.1016/j.cam.2023.115571AbstractIn this paper, we study, from both an analytical and a numerical point of view, a poro-thermoelastic problem with microtemperatures. The so-called Moore–Gibson–Thompson equation is used to model the contribution for the temperature and ...
- research-articleFebruary 2024
Predictive modeling of physical and mechanical properties of pervious concrete using XGBoost
Neural Computing and Applications (NCAA), Volume 36, Issue 16Pages 9245–9261https://doi.org/10.1007/s00521-024-09553-wAbstractHigh permeability of pervious concrete (PC) makes it a special type of concrete utilised for certain applications. However, the complexity of the behaviour and properties of PC leads to costly, time consuming and energy demanding experimental ...
- research-articleDecember 2023
The effects of geometry structure with 3D printing design on PCL scaffolds permeability
ICBET '23: Proceedings of the 2023 13th International Conference on Biomedical Engineering and TechnologyPages 173–178https://doi.org/10.1145/3620679.3620708Scaffolds for tissue engineering are porous structures that serve as support for cellular growth and tissue regeneration. Scaffold permeability is a fundamental parameter for cell adhesion ability that is mainly determined by scaffold geometrical ...
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- research-articleMay 2023
Investigation of the effects of porosity and volume fraction on the atomic behavior of cancer cells and microvascular cells of 3DN5 and 5OTF macromolecular structures during hematogenous metastasis using the molecular dynamics method
- Huanlei Wang,
- As'ad Alizadeh,
- Azher M. Abed,
- Anahita Piranfar,
- Ghassan Fadhil Smaisim,
- Salema K. Hadrawi,
- Hussein Zekri,
- Davood Toghraie,
- Maboud Hekmatifar
Computers in Biology and Medicine (CBIM), Volume 158, Issue Chttps://doi.org/10.1016/j.compbiomed.2023.106832Abstract Background and objectiveThe molecular dynamics (MD) simulation is a powerful tool for researching how cancer patients are treated. The efficiency of many factors may be predicted using this approach in great detail and with atomic accuracy.
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Highlights- MD simulation investigates the effect of porosity and volume fraction on behavior of cancer cells.
- The stability of the structures is investigated with temperature and potential energy quantities.
- By reducing the radius of gyration,...
- research-articleApril 2023
Automatic detection and characterization of porosities in cross-section images of metal parts produced by binder jetting using machine learning and image augmentation
Journal of Intelligent Manufacturing (SPJIM), Volume 35, Issue 3Pages 1281–1303https://doi.org/10.1007/s10845-023-02100-9AbstractIn binder jetting followed by sintering, the porosity characterization is critical to understand how the process affects the structure of the printed parts. Image-based porosity detection methods are widely used but the current solutions are ...
- research-articleSeptember 2023
Thermal Bifurcation Model of Piezoelectric Nano Porous Metal Foam Nanobeam under Nonlinear Hygro-Thermal Field
Computational Mathematics and Modeling (SPCMM), Volume 33, Issue 4Pages 423–437https://doi.org/10.1007/s10598-023-09584-3Thermal bifurcation studies are conducted on piezoelectric humid thermal piezoelectric foam nanobeam with voids. Various porosity designs are considered for the proposed structure. By synthesis the piezoelectric and humid thermal parameters with field ...
- research-articleOctober 2022
Effects of geometric nonlinearities on the coupled dynamics of CNT strengthened composite beams with porosity, mass and geometric imperfections
Engineering with Computers (ENGC), Volume 38, Issue Suppl 4Pages 3463–3488https://doi.org/10.1007/s00366-021-01474-9AbstractThis study investigates the effects of geometric nonlinearities on the dynamical behaviour of carbon nanotube (CNT) strengthened imperfect composite beams by considering both axial and transverse motions. For the given general model of the beam, ...
- research-articleOctober 2022
The free vibration analysis of hybrid porous nanocomposite joined hemispherical–cylindrical–conical shells
Engineering with Computers (ENGC), Volume 38, Issue Suppl 4Pages 3125–3152https://doi.org/10.1007/s00366-021-01453-0AbstractIn this research, the natural frequency responses of joined hemispherical–cylindrical–conical shells made of composite three-phase materials have been dealt with in the framework of First-Order Shear Deformation Theory (FOSDT). The joined ...
- research-articleOctober 2022
Multidirectional grading influence on static/dynamic deflection and stress responses of porous FG panel structure: a micromechanical approach
Engineering with Computers (ENGC), Volume 38, Issue Suppl 4Pages 3077–3097https://doi.org/10.1007/s00366-021-01449-wAbstractThis is the first time the multidirectional-graded porous panel structure modeled numerically using an equivalent single-layer higher-order polynomial model considering the cubic variation of extensional displacement to maintain the necessary ...
- ArticleSeptember 2022
The Evolution of Vermicular Structures and Sintering Behavior of Alumina
- Francisco Jiménez-Morales,
- Pedro Rivero-Antúnez,
- Manuela González-Sánchez,
- Laura Garrido-Regife,
- Víctor Morales-Flórez
AbstractThe evolution of microstructure of the precursor particles during the sintering of ceramic materials has been assessed by a cellular automaton model in which the only physical consideration for the evolution of the system is to minimize the ...
- research-articleJune 2022
On the nonlocal free vibration analysis of functionally graded porous doubly curved shallow nanoshells with variable nonlocal parameters
Engineering with Computers (ENGC), Volume 39, Issue 1Pages 835–855https://doi.org/10.1007/s00366-022-01687-6AbstractIn this paper, the free vibration behavior of functionally graded (FG) porous doubly curved shallow nanoshells with variable nonlocal parameters is investigated. The classical Eringen’s nonlocal elasticity theory is modified and applied to capture ...
- research-articleSeptember 2022
Numerical Simulation and Analysis of Hot Extrusion Preforming of Powder Titanium Alloy Valve
ICCMS '22: Proceedings of the 14th International Conference on Computer Modeling and SimulationPages 26–32https://doi.org/10.1145/3547578.3547583Due to low cost and good properties, the use of powder metallurgy titanium alloy in automobile industry to reduce weight and improve performance has been approved by automobile manufacturers. Based on the finite element method, the hot extrusion ...
- research-articleJune 2022
Large deflection analysis of functionally graded magneto-electro-elastic porous flat panels
Engineering with Computers (ENGC), Volume 38, Issue Suppl 2Pages 1615–1634https://doi.org/10.1007/s00366-020-01270-xAbstractIn this article, an attempt has been made on evaluating the large/nonlinear deflection of functionally graded magneto-electro-elastic porous (FG-MEEP) flat panels taking geometric skewness into consideration. Further, the flat panel is subjected ...
- research-articleJune 2022
Porosity, mass and geometric imperfection sensitivity in coupled vibration characteristics of CNT-strengthened beams with different boundary conditions
Engineering with Computers (ENGC), Volume 38, Issue 3Pages 2313–2339https://doi.org/10.1007/s00366-020-01208-3AbstractStructures face different types of imperfections and defects during the fabrication process, installation and working environment. In this paper, the imperfection effects in the coupled vibration behaviour of axially functionally graded carbon ...
- research-articleFebruary 2022
A tensile test for freestanding low-k thin films using a lift-off technique
AbstractSince decreasing dielectric constants of insulators greatly alleviates the RC-delay, the materials with low/ultra-low-k dielectric (LK/ULK) constant have been integrated into the back end of line (BEOL) of advanced chips. However, the ...
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Highlights- A lift-off technique used to obtain freestanding test samples of low-k thin film is proposed.
- research-articleFebruary 2022
On the estimation of three-dimensional porosity of insect-proof screens
- F.-J. Granados-Ortiz,
- F.M. Arrabal-Campos,
- A. López-Martínez,
- F.D. Molina-Aiz,
- A. Peña-Fernández,
- D.L. Valera
Computers and Electronics in Agriculture (COEA), Volume 193, Issue Chttps://doi.org/10.1016/j.compag.2021.106639Highlights- An estimation of 3D (volumetric) porosity of insect-proof screens is developed for the first time in the literature.
- A mathematical estimation of the 3D woven structure from geometric parameters is developed, relevant for á la carte ...
The two-dimensional estimation is the approach to porosity par excellence in the literature of insect-proof screens for their geometric characterisation and estimation of their aerodynamic parameters. However, this is not an accurate estimation, ...
- research-articleFebruary 2022
Predictive digital rock physics without segmentation
AbstractMeasuring physical properties from rock samples is necessary in geosciences to calibrate models from geophysical surveys. Digital rock physics is one way to estimate these properties. X-ray computed tomography (CT) images can be used to create 3D ...
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Highlights- We describe a method to estimate properties of rocks that have been CT scanned.
- We calibrate to phantoms included in the scan, and do not use “segmentation”.
- Different operators should get the same results.
- Larger samples can ...
- research-articleFebruary 2022
Numerical scheme for solving a porous Saint-Venant type model for water flow on vegetated hillslopes
Applied Numerical Mathematics (APNM), Volume 172, Issue CPages 67–98https://doi.org/10.1016/j.apnum.2021.09.019AbstractHillslope hydrology is a very important part of research based on watershed hydrology. In this study, we focus on water flow over a soil surface with vegetation in a hydrographic basin. We introduce a partial-differential-equation ...