Article
Chemistry, Physical
Radoslaw Mirski, Joanna Walkiewicz, Dorota Dukarska, Adam Derkowski
Summary: This study investigated the effects of using waste wood particles of different sizes as fillers for open-cell polyurethane foams. It was found that the addition of wood particles influenced the density, foaming kinetics, cell structure, and morphology of the foams. The size of the wood particles also affected the number and size of cells in the foam composites.
Article
Engineering, Manufacturing
Daniel Gallardo, Lucia-Candela Diaz, Roberto Jimenez, Marta Torralba, Jose Antonio Albajez, Jose Antonio Yague Fabra
Summary: X-ray computed to-mography (XCT) has the potential for surface characterisation in polymeric additive manufacturing (AM). This study presents the use of XCT to analyse different polymeric AM surfaces, comparing roughness parameters with reference measurements. The results demonstrate that XCT can be used for roughness evaluation in polymeric AM, with different suitable parameters depending on the technology.
ADDITIVE MANUFACTURING
(2023)
Article
Polymer Science
Collin W. Foster, Sreevishnu Oruganti, Francesco Panerai
Summary: This study quantitatively analyzed the microstructural evolution and porous network development of Room Temperature Vulcanized (RTV) silicone pyrolysis at high temperatures using in situ high-temperature X-ray computed micro-tomography. The results showed that the microstructure evolution and porous network development were dependent on the heating rate, and the bulk sample volume change, porosity, pore network size, and densification were evaluated using X-ray attenuation. The findings of this study are important for the development of multi-physics models for thermal response.
POLYMER DEGRADATION AND STABILITY
(2023)
Article
Materials Science, Multidisciplinary
Fabien Leonard, Axel Lange, Andreas Kupsch, Bernd Randolf Mueller, Giovanni Bruno
Summary: This study investigates the anisotropy of materials' microstructure and morphology in diesel particulate filter (DPF) materials, quantifies the morphological anisotropy using a simple segmentation algorithm, and correlates the anisotropy of the pore space with the microstructure and crystallographic anisotropy of the material.
ADVANCED ENGINEERING MATERIALS
(2022)
Article
Engineering, Biomedical
Eric Grolman, Quinton E. A. Sirianni, Joy Dunmore-Buyze, Charmainne Cruje, Maria Drangova, Elizabeth R. Gillies
Summary: Medical imaging plays a crucial role in clinical diagnosis and disease research. This article introduces a new self-immolative polymeric chelate system that has a long circulation time in the blood and completely degrades into small molecules for excretion. The successful application of this system in micro-CT demonstrates its promising potential in the development of imaging contrast agents.
ACTA BIOMATERIALIA
(2023)
Article
Materials Science, Multidisciplinary
Jutta Luksch, Thomas Bleistein, Kristian Koenig, Jerome Adrien, Eric Maire, Anne Jung
Summary: Microheterogeneous materials like metal foams have a strong structure-property relationship, where the macroscopic properties are influenced by factors such as pore geometry, strut geometry, and microstructure, especially grain structure. The differences in microtensile properties of aluminum foam struts were found to be mainly due to micro-porosity and primary inclusions, which are likely caused by the manufacturing process of investment casting. The study used ex situ and in situ microtensile tests to understand the scattering in micromechanical properties of individual struts, with in situ tests using high resolution X-ray computed tomography revealing the microstructural failure mechanisms.
Article
Chemistry, Physical
Laila Hossain, Emily Eastman, Monica De Rango, Vikram Singh Raghuwanshi, Joanne Tanner, Gil Garnier
Summary: The absorption capacity and kinetics of nanocellulose foams are controlled by the surface charge of the fibers, affecting swelling and network structure. The absorption process includes three stages: wicking, transition, and fiber swelling. Tuning the surface charge can modulate the absorption kinetics of nanocellulose foam.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2021)
Article
Polymer Science
Paula Cimavilla-Roman, Saul Perez-Tamarit, Anja Vananroye, Paula Moldenaers, Miguel Angel Rodriguez-Perez
Summary: The incorporation of silica aerogel particles into isocyanate changes its rheological behavior, forming a percolated network. Additionally, the addition of aerogel slows down the modulus build-up of the matrix, leading to decreased foam drainage and material fraction.
EUROPEAN POLYMER JOURNAL
(2022)
Article
Materials Science, Multidisciplinary
Ningzhen Wang, Mike Andreas Noack, Paul Hans Kamm, John Banhart, Francisco Garcia-Moreno
Summary: Ordering the bubbles of closed-cell aluminum foams can enhance decorative esthetics and create directional mechanical properties, with aluminum foams featuring smaller cell sizes capable of forming short-range ordered structures.
ADVANCED ENGINEERING MATERIALS
(2022)
Article
Materials Science, Multidisciplinary
E. Lacaj, P. Doumalin, J. Bouyer, P. Jolly, Y. Henry, A. Fatu, A. Beaudoin, A. -E Ennazii, B. Couderc, A. King
Summary: This work focuses on the development of a characterization technique for describing the morphological changes of high porosity open-cell polyurethane foam under compression, using in-situ X-ray microtomography testing. The combination of 3D image analysis and digital volume correlation is used to track the location of key microstructural features at each loaded state. The advantages and limitations of the methodology in analyzing high porosity open-cell foams are discussed, as well as the sensitivity of different scales of DVC methods in emphasizing local strain heterogeneities.
MECHANICS OF MATERIALS
(2023)
Article
Chemistry, Physical
Stephen K. Wilke, Jacob B. Mack, Christoph Kenel, David C. Dunand
Summary: Directional freeze-casting combined with H-2 reduction and sintering is used to create metallic foams with highly elongated pores. Reduction leads to foam deformations, while sintering causes isotropic shrinkage, with Fe foams exhibiting buckling due to spatially-inhomogeneous reduction rates, in contrast to Fe20Ni foams which have more uniform reduction. The relationships between FC parameters, green body and metal foam structure can guide the design and optimization of metal foams for specific technological applications.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Chemistry, Inorganic & Nuclear
Najah Rhimi, N. Dhahri, M. Khelifi, E. K. Hlil, J. Dhahri
Summary: This work focuses on studying the properties of sodium bismuth titanate (NBT) ceramic, including its structure, optical properties, and electrical properties. The material exhibited a poly-crystalline structure with a rhombohedral shape, and a grain size of 29.17 μm. The dielectric loss and dielectric constant increased with frequency, and the conduction mechanism followed the correlated barrier hopping (CBH) and small polaron hopping (SPH) models. The study provides valuable insights into the physical characteristics of NBT and its potential applications in the industry.
INORGANIC CHEMISTRY COMMUNICATIONS
(2022)
Article
Polymer Science
Stefano Tagliabue, Luca Andena, Michele Nacucchi, Fabio De Pascalis
Summary: This study proposes an image-based approach for microstructure characterization and 3D numerical mechanical simulations of polymeric expanded materials, identifying general relationships between microstructure and macroscopic properties.
JOURNAL OF POLYMER RESEARCH
(2021)
Article
Chemistry, Physical
Julien Gonthier, Tilman Rilling, Ernesto Scoppola, Fabian Zemke, Aleksander Gurlo, Peter Fratzl, Wolfgang Wagermaier
Summary: This study used in operando X-ray micro-computed tomography (mu CT) to monitor the progression of the liquid, gaseous, and solid phases of silica gels during ambient pressure drying and spring-back. The findings challenge the common assumption about the penetration of gas during the spring-back effect and show that the emergence of the spring-back effect is correlated to an equal volume fraction of solid, liquid, and gas in the gels.
CHEMISTRY OF MATERIALS
(2023)
Article
Materials Science, Multidisciplinary
C. Aguilar, F. San Martin, C. Martinez, B. Camara, F. Claverias, A. Undabarrena, M. Sancy, V. Salinas, L. Munoz
Summary: This study investigates the potential of Ti-Ta-Sn alloys for biomedical applications due to their excellent mechanical properties and biocompatibility, with a particular focus on their use in trabecular bone replacement. The influence of Sn on the mechanical properties and antibacterial response of Ti-13Ta-xSn (x:3, 6, 9, and 12 at.%) alloy foams was analyzed. The Ti-based alloy foams showed no antibacterial activity nor bacterial adhesion, indicating that there is bacterial adhesion inhibition.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2023)
Article
Materials Science, Multidisciplinary
Amy J. Clarke, Damien Tourret, Seth D. Imhoff, Paul J. Gibbs, Kamel Fezzaa, Jason C. Cooley, Wah-Keat Lee, Alex Deriy, Brian M. Patterson, Pallas A. Papin, Kester D. Clarke, Robert D. Field, James L. Smith
ADVANCED ENGINEERING MATERIALS
(2015)
Article
Chemistry, Analytical
K. G. McIntosh, N. L. Cordes, B. M. Patterson, G. J. Havrilla
JOURNAL OF ANALYTICAL ATOMIC SPECTROMETRY
(2015)
Article
Materials Science, Multidisciplinary
Brian M. Patterson, Nikolaus L. Cordes, Kevin Henderson, Jason J. Williams, Tyler Stannard, Sudhanshu S. Singh, Angel Rodriguez Ovejero, Xianghui Xiao, Mathew Robinson, Nikhilesh Chawla
JOURNAL OF MATERIALS SCIENCE
(2016)
Article
Materials Science, Multidisciplinary
S. D. Imhoff, P. J. Gibbs, M. R. Katz, T. J. Ott, B. M. Patterson, W. -K. Lee, K. Fezzaa, J. C. Cooley, A. J. Clarke
MATERIALS CHEMISTRY AND PHYSICS
(2015)
Article
Nanoscience & Nanotechnology
V. Livescu, J. F. Bingert, C. Liu, M. L. Lovato, B. M. Patterson
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2015)
Article
Spectroscopy
Nikolaus L. Cordes, Srivatsan Seshadri, George J. Havrilla, Xiaoli Yuan, Michael Feser, Brian M. Patterson
SPECTROCHIMICA ACTA PART B-ATOMIC SPECTROSCOPY
(2015)
Article
Materials Science, Multidisciplinary
B. M. Patterson, N. L. Cordes, K. Henderson, J. C. E. Mertens, A. J. Clarke, B. Hornberger, A. Merkle, S. Etchin, A. Tkachuk, M. Leibowitz, D. Trapp, W. Qiu, B. Zhang, H. Bale, X. Lu, R. Hartwell, P. J. Withers, R. S. Bradley
EXPERIMENTAL MECHANICS
(2016)
Article
Nuclear Science & Technology
Randall B. Randolph, John A. Oertel, Derek W. Schmidt, Matthew N. Lee, Brian M. Patterson, Kevin C. Henderson, Christopher E. Hamilton
FUSION SCIENCE AND TECHNOLOGY
(2016)
Article
Materials Science, Multidisciplinary
T. G. Holesinger, J. S. Carpenter, T. J. Lienert, B. M. Patterson, P. A. Papin, H. Swenson, N. L. Cordes
Article
Materials Science, Multidisciplinary
Derek H. Smith, Jonathan Bicknell, Luke Jorgensen, Brian M. Patterson, Nikolaus L. Cordes, Igor Tsukrov, Marko Knezevic
MATERIALS CHARACTERIZATION
(2016)
Article
Physics, Applied
W. J. M. Kort-Kamp, N. L. Cordes, A. Ionita, B. B. Glover, A. L. Higginbotham Duque, W. L. Perry, B. M. Patterson, D. A. R. Dalvit, D. S. Moore
PHYSICAL REVIEW APPLIED
(2016)
Article
Physics, Applied
Dana M. Dattelbaum, Joshua D. Coe, Charles B. Kiyanda, Richard L. Gustavsen, Brian M. Patterson
JOURNAL OF APPLIED PHYSICS
(2014)
Article
Materials Science, Multidisciplinary
Andrew David Brown, Leda Wayne, Quan Pham, Kapil Krishnan, Pedro Peralta, Sheng-Nian Luo, Brian M. Patterson, Scott Greenfield, Darrin Byler, Kenneth J. McClellan, Aaron Koskelo, Rob Dickerson, Xianghui Xiao
METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE
(2015)
Article
Spectroscopy
Nikolaus L. Cordes, George J. Havrilla, Igor O. Usov, Kimberly A. Obrey, Brian M. Patterson
SPECTROCHIMICA ACTA PART B-ATOMIC SPECTROSCOPY
(2014)
Article
Chemistry, Physical
John D. Yeager, Lindsey A. Kuettner, Amanda L. Duque, Larry G. Hill, Brian M. Patterson