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Artículos de revistas sobre el tema "3D-SHORE"

Autor: Grafiati

Publicado: 11 de marzo de 2023

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1

KUROIWA, Masamitsu, Yuhei MATSUBARA, Yukihiko HASEGAWA, et al. "3D Morphodynamic Model for Sandy Beach with Shore Reef." Journal of Japan Society of Civil Engineers, Ser. B2 (Coastal Engineering) 67, no. 2 (2011): I_531—I_535. http://dx.doi.org/10.2208/kaigan.67.i_531.

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2

Brounstein, Zachary, Jarrod Ronquillo, and Andrea Labouriau. "3D Printed Chromophoric Sensors." Chemosensors 9, no. 11 (2021): 317. http://dx.doi.org/10.3390/chemosensors9110317.

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Eight chromophoric indicators are incorporated into Sylgard 184 to develop sensors that are fabricated either by traditional methods such as casting or by more advanced manufacturing techniques such as 3D printing. The sensors exhibit specific color changes when exposed to acidic species, basic species, or elevated temperatures. Additionally, material properties are investigated to assess the chemical structure, Shore A Hardness, and thermal stability. Comparisons between the casted and 3D printed sensors show that the sensing devices fabricated with the advanced manufacturing technique are mo

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3

Felices, Niño B., and Bryan B. Pajarito. "Effect of Silane-Treated Wollastonite on Mechanical and Thermal Properties of 3D-Printed ABS via Fused Deposition Modeling." Key Engineering Materials 877 (February 2021): 61–66. http://dx.doi.org/10.4028/www.scientific.net/kem.877.61.

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The effect of the addition of epoxysilane-treated wollastonite (ETW) to the mechanical and thermal properties of 3D-printed acrylonitrile butadiene styrene (ABS) via fused deposition modeling (FDM) was investigated. The loading of ETW was varied at 1, 3, and 5wt%. The 3D-printed composites were evaluated by scanning electron microscopy (SEM) tensile test, shore D hardness, differential scanning calorimetry (DSC) and thermogravimetric analysis (TGA). The addition of ETW increases the tensile strength, elastic modulus, and toughness of ABS by up to 46.6, 56.2, and 53.7 %, respectively. The shore

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4

Canning, John, Caspar Clark, Monica Dayao, Daniel de LaMela, Michael Logozzo, and Jing Zhao. "Anti-Reflection Coatings on 3D-Printed Components." Coatings 11, no. 12 (2021): 1519. http://dx.doi.org/10.3390/coatings11121519.

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The use of anti-reflection coatings on 3D-printed components to reduce both Fresnel reflections and scattering is explored. Two similar photo-initiated acrylic commercial material structures, known as Standard Clear (SC: T~60% @ λ = 800 nm) and VeroClear (VC: T~90% @ λ = 800 nm), used specifically for optical components, are examined. The refractive indices for slab samples~(5 × 5 × 0.7) cm are measured at λ = 650 nm and averaged over the slab area: n(SC)~(1.49 ± 0.04) and n(VC)~(1.42 ± 0.03). Within experimental error, novel Shore D mapping is used to show hardness distribution across the sur

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5

Sokolov, Andrei, and Boris Chubarenko. "Numerical simulation of dynamics of sediments disposed in the marine coastal zone of the south-eastern Baltic." Baltica 31, no. 1 (2018): 13–23. http://dx.doi.org/10.5200/baltica.2018.31.02.

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Three dumping sites located at the south-eastern part of the Baltic Sea at shallow depths near the shore of the Sambian Peninsula are considered. The first and second ones are located south and north of the Vistula Lagoon inlet, and are used now for disposing dredged material extracted from the Kaliningrad Seaway Canal. The third dumping site is located near the northern shore of the Sambian Peninsula, east of Cape Gvardeyskiy and assigned for disposing the dredged material extracted from the fairway to the Pionerskiy Port located nearby. All three dumping sites are located either in front of

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6

Zhang, Jingxin, Dongfang Liang, and Hua Liu. "An efficient 3D non-hydrostatic model for simulating near-shore breaking waves." Ocean Engineering 140 (August 2017): 19–28. http://dx.doi.org/10.1016/j.oceaneng.2017.05.009.

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7

Fauzhan Warsito, Indhika, René Machts, Stefan Griebel, Patrique Fiedler, and Jens Haueisen. "Influence of silver/silver chloride electroless plating on the Shore hardness of polyurethane substrates for dry EEG electrodes." Current Directions in Biomedical Engineering 7, no. 2 (2021): 9–12. http://dx.doi.org/10.1515/cdbme-2021-2003.

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Abstract Dry electrodes enable a shorter preparation time for infant EEG. Since infant skin is more sensitive than adult skin, soft electrodes are required to reduce the mechanical stress for this sensitive skin. Thus, soft electrodes are crucial for eventual repetitive and long-term use like in neonatal intensive care units. A biocompatible polyurethane (PU) can be produced in low hardness resulting in a soft and flexible electrode substrate. Silver/silver chloride (Ag/AgCl) electroless plating provides a conductive, electrochemically stable coating but the process may alter the mechanical pr

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8

Luna, Carlos B. B., Danilo D. Siqueira, Edcleide M. Araújo, and Renate M. R. Wellen. "Annealing efficacy on PLA. Insights on mechanical, thermomechanical and crystallinity characters." MOMENTO, no. 62 (January 1, 2021): 1–17. http://dx.doi.org/10.15446/mo.n62.89099.

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Poly (lactic acid) (PLA) is widely used biodegradable thermoplastic in the additive manufacturing, mainly on manufactured products through 3D printing. However, PLA is highly fragile and presents low impact strength; hence improvements on this way are industrially and technologically important. Aiming to develop proper methodology for higher PLA performance, this work investigated the effects of thermal annealing on the mechanical properties (impact, tensile, Shore D hardness), heat deflection temperature (HDT), Vicat softening temperature (VST) and crystallinity (X-ray diffraction) of PLA. In

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9

Hsieh, Fan-Chun, Chien-Yao Huang, and Yen-Pei Lu. "Wettability and Surface Roughness of Parylene C on Three-Dimensional-Printed Photopolymers." Materials 15, no. 12 (2022): 4159. http://dx.doi.org/10.3390/ma15124159.

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The use of poly-(para-chloro-xylylene) (Parylene C) in microelectromechanical systems and medical devices has increased rapidly. However, little research has been conducted on the wettability and surface roughness of Parylene C after being soaked in solutions. In this study, the contact angle and surface roughness (arithmetic average of roughness) of Parylene C on three-dimensional (3D)-printed photopolymer in 10% sodium hydroxide, 10% ammonium hydroxide, and 100% phosphate-buffered saline (PBS) solutions were investigated using a commercial contact angle measurement system and laser confocal

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10

Sikora, Piotr, Adam Gnatowski, and Rafał Gołębski. "Tests of mechanical properties of semicrystalline and amorphous polymeric materials produced by 3D printing." MATEC Web of Conferences 254 (2019): 06003. http://dx.doi.org/10.1051/matecconf/201925406003.

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The article presents the results of tests of physical properties of samples from semi-crystalline and amorphous polymeric materials produced using 3D printing. Samples were produced using 3D printing technology on the SIGNAL -ATMAT printer. The following polymeric materials were used to make the samples: TPU thermoplastic polyurethane elastomer, ABS acrylonitrile-butadiene-styrene copolymer, Laywood, PET ethylene terephthalate, PLA poly (lactic acid). The materials were tested for their mechanical properties. The hardness was determined by the Shore method and the ball-pressing method. The ten

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11

Passchier, Sandra, Kenneth Rijsdijk, and Cees Laban. "Introduction." Netherlands Journal of Geosciences 84, no. 2 (2005): 59. http://dx.doi.org/10.1017/s0016774600022952.

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Coastal low-lands are densely populated areas characterized by large economic activity. The shallow subsurface plays an important role because of geotechnical requirements for the foundation of structures and its potential for natural resources, such as sand, gravel, and groundwater. The application of geo-scientific data requires that the subsurface is represented as 2D and 3D models displaying the stratigraphie relations of sedimentary rock units, both on-and off-shore.

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12

Molina Villamil, Andrés. "Gestión de integridad en facilidades "On Shore" con tecnología "high definition survey" (HDS) 3D." Ingeniería Solidaria 13, no. 23 (2017): 56–76. http://dx.doi.org/10.16925/in.v23i13.2005.

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Introducción: este artículo es producto de la investigación “Gestión de integridad en facilidades on shore con tecnología high definition survey (hds) 3D” de la Universidad Pedagógica y Tecnológica y de Colombia, realizada durante el 2016 y el 2017. Metodología: se partió de una revisión documental de ScienceDirect, Proquest, ebsco, dialnet, se establecieron los factores generales de un sgi; se presenta la validación de hds3d, la integración al sistema de gestión de integridad y beneficios. Resultados: se presenta una metodología de integración de la tecnología que se basa en un modelamiento

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13

Protsenko, S. V. "Simulation of wave impact on shore protection structures using 3D model of wave processes." Journal of Physics: Conference Series 1479 (March 2020): 012078. http://dx.doi.org/10.1088/1742-6596/1479/1/012078.

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14

Tomasicchio, Giuseppe Roberto, Elvira Armenio, Felice D'Alessandro, et al. "DESIGN OF A 3D PHYSICAL AND NUMERICAL EXPERIMENT ON FLOATING OFF-SHORE WIND TURBINES." Coastal Engineering Proceedings 1, no. 33 (2012): 67. http://dx.doi.org/10.9753/icce.v33.structures.67.

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The knowledge of the behavior of floating offshore wind turbines (W/T) under wave and/or wind action remains one of the most difficult challenges in offshore engineering which is mostly due to the highly non-linear response of the structure. The present study describes the design process of a 3D physical experiment to investigate the behavior of the most promising structure technology of floating W/T: spar buoy (SB) and tension leg platform (TLP) under different meteo conditions. In order to properly design the two W/T models, the following topics have been analyzed: mooring lines, mass distri

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15

Tzeng, Jy-Jiunn, Tzu-Sen Yang, Wei-Fang Lee, Hsuan Chen, and Hung-Ming Chang. "Mechanical Properties and Biocompatibility of Urethane Acrylate-Based 3D-Printed Denture Base Resin." Polymers 13, no. 5 (2021): 822. http://dx.doi.org/10.3390/polym13050822.

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In this study, five urethane acrylates (UAs), namely aliphatic urethane hexa-acrylate (87A), aromatic urethane hexa-acrylate (88A), aliphatic UA (588), aliphatic urethane triacrylate diluted in 15% HDD (594), and high-functional aliphatic UA (5812), were selected to formulate five UA-based photopolymer resins for digital light processing (DLP)-based 3D printing. Each UA (40 wt%) was added and blended homogenously with ethoxylated pentaerythritol tetraacrylate (40 wt%), isobornyl acrylate (12 wt%), diphenyl (2,4,6-trimethylbenzoyl) phosphine oxide (3 wt%), and a pink acrylic (5 wt%). Each UA-ba

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16

Kováčová, Mária, Anna Vykydalová, and Zdenko Špitálský. "Polycaprolactone with Glass Beads for 3D Printing Filaments." Processes 11, no. 2 (2023): 395. http://dx.doi.org/10.3390/pr11020395.

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At present, 3D printing is experiencing a great boom. The demand for new materials for 3D printing is also related to its expansion. This paper deals with manufacturing innovative polymer composite filaments suitable for the Fused Filament Fabrication method in 3D printing. As a filler, common and uncostly glass beads were used and mixed with biocompatible and biodegradable poly (ε-caprolactone), as a polymer matrix. This material was characterized via several physical-chemical methods. The Youngs modulus was increasing by about 30% with 20% loading of glass beads, and simultaneously, brittlen

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17

Fateri, Miranda, João Falcão Carneiro, Constantin Schuler, et al. "Impact of 3D Printing Technique and TPE Material on the Endurance of Pneumatic Linear Peristaltic Actuators." Micromachines 13, no. 3 (2022): 392. http://dx.doi.org/10.3390/mi13030392.

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In this paper, additive manufacturing was used in order to produce hose prototypes for peristaltic linear pneumatic actuators. In order to optimise the endurance of the actuator, we 3D printed different thermoplastic polyurethane elastomers with different shore hardness levels using ARBURG Plastic Freeforming technology. Furthermore, effects of the hose geometries on the lifetime of the actuator were investigated. Experimental evidence showed that the lifetime of the actuator was dependent on the combination of the hose design and on the material used to manufacture the hose. Moreover, experim

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18

Dong, Yuwen, Iftikhar Satti, and Xu Chen. "Microfacies and Reservoir Connectivity of Shore Sandbar, Southern Indus Basin, Pakistan." Water 14, no. 10 (2022): 1614. http://dx.doi.org/10.3390/w14101614.

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Shore sand bar reservoirs have attracted much attention as one of the target intervals with the greatest potential for petroleum exploration and development in marine sedimentary basins. Nevertheless, due to lack of effective research methods, it is difficult to analyze the rapid lateral change and heterogeneity in a sand bar reservoir, which has a major impact on the efficient petroleum development that seriously restricts the rolling evaluation and efficient development of sand-bar reservoirs. In this study, based on integrated analysis of cores, thin sections, logging, 3D seismic data, prod

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19

Zarkogiannis, Stergios D., Vincent Fernandez, Mervyn Greaves, P. Graham Mortyn, George Kontakiotis, and Assimina Antonarakou. "X-ray tomographic data of planktonic foraminifera species Globigerina bulloides from the Eastern Tropical Atlantic across Termination II." Gigabyte 2020 (September 25, 2020): 1–10. http://dx.doi.org/10.46471/gigabyte.5.

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Increased planktonic foraminifera shell weights were recorded during the course of Termination II at a tropical site off the shore of the Mauritanian coast. In order to investigate these increased shell mass values, a series of physicochemical analyses were performed, including X-ray computed tomography (CT). The data are given here. Furthermore, the relevant CT setup, scanning, reconstruction, and visualization methods are explained and the acquired datasets are given, together with 3D volumes and models of the scanned specimens.

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20

Hsueh, Ming-Hsien, Chao-Jung Lai, Kuan-Yin Liu, et al. "Effects of Printing Temperature and Filling Percentage on the Mechanical Behavior of Fused Deposition Molding Technology Components for 3D Printing." Polymers 13, no. 17 (2021): 2910. http://dx.doi.org/10.3390/polym13172910.

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Additive manufacturing (AM) has the advantages of providing materials with lightweight microporous structures and customized features, and being environmentally safe. It is widely used in medical sciences, the aerospace industry, biological research, engineering applications, and other fields. Among the many additive manufacturing methods, fused deposition modeling (FDM) is relatively low-cost, wastes less raw material and has a lower technical threshold. This paper presents a study on 3D printing based on FDM by changing two printing parameters, namely the printing temperature and filling per

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21

Lee, Yun, Jin-Keun Kim, Hyun-Cheol Seol, Joo-Kyoung Yang, and Ki-Jung Kim. "3D numerical analysis of column shortening and shore safety under construction of high-rise building." Engineering Structures 150 (November 2017): 242–55. http://dx.doi.org/10.1016/j.engstruct.2017.07.049.

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22

Flores, NatashaY, Frank P. L. Collas, and Rob S. E. W. Leuven. "3D upstream passability of novel river training structures by migratory fish in the river Waal." Knowledge & Management of Aquatic Ecosystems, no. 423 (2022): 22. http://dx.doi.org/10.1051/kmae/2022019.

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Longitudinal training dams (LTDs) are novel river training structures that divide a river into a main navigation channel and protected shore channels. High velocities at the inflows of shore channels constructed in the river Waal (The Netherlands) pose a potential bottleneck for migratory fish species swimming upstream. This study assessed the passability of the inflows using flow velocity datasets from governmental monitoring campaigns collected with an ADCP during high river discharges (Q = 3489–5066 m3/s at Lobith monitoring station). The swimming performance of several migratory fish speci

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23

Tian, Li, Jianmin Zheng, Nadia Magnenat Thalmann, et al. "Design of a Single-Material Complex Structure Anthropomorphic Robotic Hand." Micromachines 12, no. 9 (2021): 1124. http://dx.doi.org/10.3390/mi12091124.

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In the field of robotic hand design, soft body and anthropomorphic design are two trends with a promising future. Designing soft body anthropomorphic robotic hands with human-like grasping ability, but with a simple and reliable structure, is a challenge that still has not been not fully solved. In this paper, we present an anatomically correct robotic hand 3D model that aims to realize the human hand’s functionality using a single type of 3D-printable material. Our robotic hand 3D model is combined with bones, ligaments, tendons, pulley systems, and tissue. We also describe the fabrication me

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24

Blossier, Brice, Christophe Brière, J. A. Roelvink, and D. J. R. Walstra. "CHARACTERIZATION OF PROCESSES INVOLVED IN THE RESET OF A SUBTIDAL BAR." Coastal Engineering Proceedings 1, no. 33 (2012): 101. http://dx.doi.org/10.9753/icce.v33.sediment.101.

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Sand beach profiles can exhibit nearshore sandbars with complex 3D patterns. Under energetic conditions, these patterns disappear and the bars get to a certain extent alongshore uniform. This phenomenon is called a reset. The existing literature mainly concerns the development of the bar patterns (3D) or the cross-shore migration of sandbars (2D). Studies on reset-events from a three dimensional point of view are limited but can be found for instance in Reniers et al. (2004) and Smit (2010). This paper describes an analysis that is aimed at determining the relevant processes involved in the re

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25

Kranjčević, Lado, Luka Grbčić, Matija Mrazović, and Siniša Družeta. "Rijeka Bay 3D VOF Costal Flow Model." Journal of Maritime & Transportation Science 3, no. 3 (2020): 125–32. http://dx.doi.org/10.18048/2020.00.09.

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3D multiphase flow was analyzed in the area of Rijeka bay in the Adriatic Sea. The necessary morphology data in the range of interest of the coastal bottom area were collected and the spatial surface was created. The functionality of the 3D model was studied in the large area of the realistic stochastic structure of the bottom and the shore. The probability of meteorological conditions and wind impact in the model has been shown. The obtained results give a detailed view of the velocity fields in the horizontal plane of different depths. Numerical simulation was performed in open source progra

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26

Qiu, Yinguo, Yaqin Jiao, Juhua Luo, et al. "A Rapid Water Region Reconstruction Scheme in 3D Watershed Scene Generated by UAV Oblique Photography." Remote Sensing 15, no. 5 (2023): 1211. http://dx.doi.org/10.3390/rs15051211.

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Oblique photography technology based on UAV (unmanned aerial vehicle) provides an effective means for the rapid, real-scene 3D reconstruction of geographical objects on a watershed scale. However, existing research cannot achieve the automatic and high-precision reconstruction of water regions due to the sensitivity of water surface patterns to wind and waves, reflections of objects on the shore, etc. To solve this problem, a novel rapid reconstruction scheme for water regions in 3D models of oblique photography is proposed in this paper. It extracts the boundaries of water regions firstly usi

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27

Appusamy, Anandha Moorthy, Natarajan Nanjappan, Prakash Eswaran, and Madheswaran Subramanian. "The effect of natural Gongura roselle fiber on the mechanical properties of 3D printed ABS and PLA composites." Polimery 67, no. 3 (2022): 119–24. http://dx.doi.org/10.14314/polimery.2022.3.4.

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The influence of the natural Gongura roselle fiber on the tensile and flexural properties as well as on Shore D hardness of acrylonitrile-butadiene-styrene (ABS) and poly (lactic acid) (PLA) was investigated. The composites were printed in fused deposition modeling (FDM) 3D technique. The addition of natural fiber improved the mechanical properties of the tested composites, while the flexural strength, modulus and hardness were better in the case of ABS-based composite. Whereas, PLA-based composites showed higher tensile strength. The influence of the nozzle angle on the mechanical properties

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28

Arias-Ferreiro, Goretti, Aurora Lasagabáster-Latorre, Ana Ares-Pernas, et al. "Lignin as a High-Value Bioaditive in 3D-DLP Printable Acrylic Resins and Polyaniline Conductive Composite." Polymers 14, no. 19 (2022): 4164. http://dx.doi.org/10.3390/polym14194164.

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With increasing environmental awareness, lignin will play a key role in the transition from the traditional materials industry towards sustainability and Industry 4.0, boosting the development of functional eco-friendly composites for future electronic devices. In this work, a detailed study of the effect of unmodified lignin on 3D printed light-curable acrylic composites was performed up to 4 wt.%. Lignin ratios below 3 wt.% could be easily and reproducibly printed on a digital light processing (DLP) printer, maintaining the flexibility and thermal stability of the pristine resin. These low l

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29

Escobar Guachambala, Miguel Ángel, Javier José Gavilanes Carrión Gavilanes Carrión, and Mesías Heriberto Freire Quintanilla. "Evaluación de la capacidad de absorción de energía de impacto y dureza en probetas impresas en 3D de PLA y ABS con estructura cúbica y tri hexagonal." ConcienciaDigital 3, no. 2 (2020): 17–33. http://dx.doi.org/10.33262/concienciadigital.v3i2.1204.

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En la actualidad se construyen ortesis personalizadas para rehabilitación física mediante prototipado rápido 3D, debido a esto es de importancia conocer su resistencia mecánica, por esto se plantea ensayar probetas impresas en 3D con filamentos de PLA y ABS. Las probetas de estudio se diseñaron mediante software CAD, en función de la norma ASTM D256; después se imprimieron en 3D con estructura de relleno cúbica y tri hexagonal en materiales de PLA y ABS. Para el análisis de resistencia de las probetas se desarrolló varios ensayos: el ensayo de impacto con péndulo tipo Izod, microscopia de la s

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Sedrati, Mouncef, Juan A. Morales, Abdelmounim El M’rini, et al. "Using UAV and Structure-From-Motion Photogrammetry for the Detection of Boulder Movement by Storms on a Rocky Shore Platform in Laghdira, Northwest Morocco." Remote Sensing 14, no. 16 (2022): 4102. http://dx.doi.org/10.3390/rs14164102.

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The detachment and mobilization of boulders from rocky shore platforms by waves involves complex geomorphic and hydrodynamic processes. Understanding these processes requires precise information on the rates and patterns of movement of these megaclasts scaled against the wave conditions that generate boulder mobility. Repeat photogrammetry and structure-from-motion (SfM) models commonly used in geomorphic analyses are an interesting option for monitoring boulder dynamics. In this study, we used unmanned aerial vehicle (UAV)-based digital photogrammetry and SfM differential models to identify r

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Slapnik, Janez, Tanja Stiller, Thomas Wilhelm, and Andreas Hausberger. "Influence of Solid Lubricants on the Tribological Performance of Photocurable Resins for Vat Photopolymerization." Lubricants 8, no. 12 (2020): 104. http://dx.doi.org/10.3390/lubricants8120104.

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New developments in additive manufacturing (AM) are enabling the use of 3D printed parts in increasingly demanding applications, such as in mechanical power transmission systems, where excellent build quality and tribological performance are required. The tribological properties of thermoplastic-based AM technologies are well knowninject, whereas the performance of photopolymer-based AM technologies is very rarely explored. This study aims to provide new insight into the tribological performance of 3D printed parts produced using vat photopolymerization (VPP). Photocurable resins based on alip

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32

Sharma, Kuldeep, and Kapil Kumar. "Parametric multi-objective optimization of fused deposition modelling (FDM) with biopolymer using Grey-Taguchi method." IOP Conference Series: Materials Science and Engineering 1248, no. 1 (2022): 012107. http://dx.doi.org/10.1088/1757-899x/1248/1/012107.

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Abstract For ecological sustainability, the synthetic polymers are being continuously replaced by biopolymers due to their unique properties of biocompatibility and biodegradability. Ploy-lactic acid (PLA) is a well-known engineering biopolymer because of its versatile use in bioengineering, textile and packing industries. For the customized engineering applications, the mechanical properties, namely tensile strength and shore hardness of PLA specimens printed by FDM which is an economical 3D printed technique has been investigated in this article. Taguchi’s L9 orthogonal array (OA) is used as

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33

Park, Jieun, Minho Kim, Insic Hong, et al. "Foot Plantar Pressure Measurement System Using Highly Sensitive Crack-Based Sensor." Sensors 19, no. 24 (2019): 5504. http://dx.doi.org/10.3390/s19245504.

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Measuring the foot plantar pressure has the potential to be an important tool in many areas such as enhancing sports performance, diagnosing diseases, and rehabilitation. In general, the plantar pressure sensor should have robustness, durability, and high repeatability, as it should measure the pressure due to body weight. Here, we present a novel insole foot plantar pressure sensor using a highly sensitive crack-based strain sensor. The sensor is made of elastomer, stainless steel, a crack-based sensor, and a 3D-printed frame. Insoles are made of elastomer with Shore A 40, which is used as pa

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34

Specht, Cezary, Pawel S. Dabrowski, and Mariusz Specht. "3D modelling of beach topography changes caused by the tombolo phenomenon using terrestrial laser scanning (TLS) and unmanned aerial vehicle (UAV) photogrammetry on the example of the city of Sopot." Geo-Marine Letters 40, no. 5 (2020): 675–85. http://dx.doi.org/10.1007/s00367-020-00665-5.

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Abstract In 2011, a yacht marina was built in Sopot (the largest holiday resort in Poland), which initiated the formation of a local shallowing of the bottom related to the tombolo effect. The building of the marina led to disturbances in the transmission of bottom deposits along the coast, which resulted from waves and the shift of the beach coastline by approx. 50 m towards the sea. Its effects include progressive morphological changes in the shore and the sea bottom, which will lead to the formation of a peninsula between the shore and the marina in the future. This paper presents the resul

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35

Georgopoulou, Antonia, Silvain Michel, and Frank Clemens. "Sensorized Robotic Skin Based on Piezoresistive Sensor Fiber Composites Produced with Injection Molding of Liquid Silicone." Polymers 13, no. 8 (2021): 1226. http://dx.doi.org/10.3390/polym13081226.

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Soft robotics and flexible electronics are rising in popularity and can be used in many applications. However, there is still a need for processing routes that allow the upscaling in production for functional soft robotic parts in an industrial scale. In this study, injection molding of liquid silicone is suggested as a fabrication method for sensorized robotic skin based on sensor fiber composites. Sensor fibers based on thermoplastic elastomers with two different shore hardness (50A and 70A) are combined with different silicone materials. A mathematical model is used to predict the mechanica

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Liu, Hongze, and Nobukazu Wakabayashi. "RedNavi: Building a 3D Scene of the Current Sea from AIS Data." Sustainability 14, no. 19 (2022): 12572. http://dx.doi.org/10.3390/su141912572.

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The Automatic Identification System (AIS) is a kind of navigation equipment that exchanges a wealth of essential information among vessels and between ships to shore through Very High Frequency. Currently, identification and other navigational information can be obtained in real time with AIS data integrated into other shipborne systems, such as the Electronic Chart Display and Information System and radar. However, at present, AIS information is represented in a two-dimensional (2D) way, which is not the same as the three-dimensional (3D) world people perceive visually. In this paper, we intr

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Masnicki, Romuald, Cezary Specht, Janusz Mindykowski, Paweł Dąbrowski, and Mariusz Specht. "Accuracy Analysis of Measuring X-Y-Z Coordinates with Regard to the Investigation of the Tombolo Effect." Sensors 20, no. 4 (2020): 1167. http://dx.doi.org/10.3390/s20041167.

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Tombolo is a narrow belt connecting the mainland with an island lying near the shore. It is formed as a result of sand and gravel being deposited by sea currents. In consequence, the seabed constantly rises and the shoreline moves towards the sea. This paper deals with accuracy analysis of the undertaken tombolo effect investigation, namely estimation of uncertainty of the measurement results. The aforementioned analysis concerns two methods used for creating a 3D beach model: Firstly, based on geodetic laser scanning (TLS—terrestrial laser scanning) and secondly, using images from unmanned ae

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Benson, James, Regina Hanlon, Teresa Seifried, et al. "Microorganisms Collected from the Surface of Freshwater Lakes Using a Drone Water Sampling System (DOWSE)." Water 11, no. 1 (2019): 157. http://dx.doi.org/10.3390/w11010157.

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New tools and technology are needed to study microorganisms in freshwater environments. Little is known about spatial distribution and ice nucleation activity (INA) of microorganisms in freshwater lakes. We developed a system to collect water samples from the surface of lakes using a 3D-printed sampling device tethered to a drone (DOWSE, DrOne Water Sampling SystEm). The DOWSE was used to collect surface water samples at different distances from the shore (1, 25, and 50 m) at eight different freshwater lakes in Austria in June 2018. Water samples were filtered, and microorganisms were cultured

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Kumar, Nirnimesh, and Falk Feddersen. "The Effect of Stokes Drift and Transient Rip Currents on the Inner Shelf. Part I: No Stratification." Journal of Physical Oceanography 47, no. 1 (2017): 227–41. http://dx.doi.org/10.1175/jpo-d-16-0076.1.

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AbstractThis is part one of a two-part study focused on Stokes drift and transient rip current (TRC) effects on the unstratified (this paper) and stratified (see Part II) inner shelf. A TRC-generating, wave-resolving model funwaveC is coupled to the 3D, wave-averaged wave and circulation model Coupled Ocean–Atmosphere–Wave–Sediment Transport (COAWST). Two simulations (R1 and R2) are performed on an unstratified inner shelf and surfzone with typical bathymetry and wave conditions. R1 is a COAWST-only simulation (no TRCs), while R2 has funwaveC–COAWST coupling (with TRCs). R2 and funwaveC vertic

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Marinho, Wellerson Salomão Diniz, Carlos Bruno Barreto Luna, Edcleide Maria Araújo, Carlos Heitor de Andrade Lustosa, Celso Rosendo Bezerra Filho, and Raimundo Nonato Calazans Duarte. "From disposal to sustainable development: technological potential of poly(lactic acid) (PLA) blends with 3D filament waste." Research, Society and Development 9, no. 12 (2020): e13291210767. http://dx.doi.org/10.33448/rsd-v9i12.10767.

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Additive manufacturing is growing rapidly in the automotive, medical, and aerospace industries as an option for the manufacturing of products. However, there is a continuous growth in the amount of waste generated by 3D filaments, thus, the reuse practice becomes important, since it brings environmental and economic gains. The present research evaluated the mechanical, thermal, thermomechanical and rheological properties of PLA/PLAr blends containing post-consumption 3D filament. The blends were prepared in a co-rotational twin screw extruder and, subsequently, the extruded granules were injec

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Czajkowska, Marta, Ewa Walejewska, Łukasz Zadrożny, et al. "Comparison of Dental Stone Models and Their 3D Printed Acrylic Replicas for the Accuracy and Mechanical Properties." Materials 13, no. 18 (2020): 4066. http://dx.doi.org/10.3390/ma13184066.

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This study was conducted to test possibilities of application of 3D printed dental models (DMs) in terms of their accuracy and physical properties. In this work, stone models of mandibles were cast from alginate impressions of 10 patients and scanned in order to obtain 3D printed acrylic replicas. The diagnostic value was tested as matching of model scans on three levels: peak of cusps, occlusal surface, and all teeth surfaces. The mechanical properties of acrylic and stone samples, specifically the impact strength, shore D hardness, and flexural and compressive strength were investigated acco

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Mau, Robert, Jamal Nazir, Samuel John, and Hermann Seitz. "Preliminary Study on 3D printing of PEGDA Hydrogels for Frontal Sinus Implants using Digital Light Processing (DLP)." Current Directions in Biomedical Engineering 5, no. 1 (2019): 249–52. http://dx.doi.org/10.1515/cdbme-2019-0063.

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AbstractDigital Light Processing (DLP) enables high precision 3D-printing of photopolymers and holds promising potential for patient-specific implant solutions. On the material side, Poly(ethylene glycol) diacrylate (PEGDA) has emerged as an interesting material for use in biomedical applications. For adequate photopolymerization, a photoinitiator and a light absorber are necessary, using welldefined concentrations. This study shows preliminary results of DLP 3D-printing of different PEGDA hydrogel compositions with varying water content (90; 70; 50; 30; 10; 0 % w/w) as well as varying concent

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Guimarães, André, Carlos Coelho, Fernando Veloso-Gomes, and Paulo A. Silva. "3D Physical Modeling of an Artificial Beach Nourishment: Laboratory Procedures and Nourishment Performance." Journal of Marine Science and Engineering 9, no. 6 (2021): 613. http://dx.doi.org/10.3390/jmse9060613.

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Beach nourishment represents a type of coastal defense intervention, keeping the beach as a natural coastal defense system. Altering the cross-shore profile geometry, due to the introduction of new sediments, induces a non-equilibrium situation regarding the local wave dynamics. This work aims to increase our knowledge concerning 3D movable bed physical modeling and beach nourishment impacts on the hydrodynamics, sediment transport, and morphodynamics. A set of experiments with an artificial beach nourishment movable bed model was prepared. Hydrodynamic, sediment transport, and morphological v

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George, Douglas A., John L. Largier, Gregory Brian Pasternack, Patrick L. Barnard, Curt D. Storlazzi, and Li H. Erikson. "Modeling Sediment Bypassing around Idealized Rocky Headlands." Journal of Marine Science and Engineering 7, no. 2 (2019): 40. http://dx.doi.org/10.3390/jmse7020040.

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Alongshore sediment bypassing rocky headlands remains understudied despite the importance of characterizing littoral processes for erosion abatement, beach management, and climate change adaptation. To address this gap, a numerical model sediment transport study was developed to identify controlling factors and mechanisms for sediment headland bypassing potential. Four idealized headlands were designed to investigate sediment flux around the headlands using the process-based hydrodynamic model Delft-3D and spectral wave model SWAN. The 120 simulations explored morphologies, substrate compositi

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Iman, Miftahul, and Azis Susanto. "EVALUASI KINERJA STRUKTUR MENARA RANGKA BAJA (DERRICK) BERDASARKAN PERIODE AISC." Jurnal Kacapuri : Jurnal Keilmuan Teknik Sipil 3, no. 1 (2020): 96. http://dx.doi.org/10.31602/jk.v3i1.3605.

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Tarakan adalah kota penghasil minyak yang telah dikenal sejak 1896. Derrick didefinisikan sebagai fasilitas pengeboran minyak bumi. Prototipe derrick dimodelkan dengan elemen rangka 3D dalam SAP2000. Tiga standar telah digunakan seperti AISC- ASD 1983; AISC-LRFD 1993; dan AISC 2010. Kombinasi beban angin (W) dan gempa (E) telah dibandingkan. Analisis tekuk tunggal dan keseluruhan telah dipertimbangkan. Hasil penelitian menunjukkan bahwa struktur derick memenuhi persyaratan stabilitas dan kekuatan. Pengaruh kombinasi beban angin (W) pada struktur derek lebih signifikan (9,45%) daripada beban ge

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Angelelli, Elisa, and Barbara Zanuttigh. "A FARM OF WAVE ACTIVATED BODIES FOR COASTAL PROTECTION PURPOSES." Coastal Engineering Proceedings 1, no. 33 (2012): 68. http://dx.doi.org/10.9753/icce.v33.structures.68.

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This paper aims at investigating the efficacy of a floating farm of wave energy converters for coastal protection purposes through physical and numerical modelling. The experiments were performed in 3D conditions on a basic module consisting of two staggered lines and three devices. The numerical simulations were carried out with the software MIKE 21 BW, developed by DHI Water & Environment & Health, and were calibrated based on the experimental results. Additional configurations were tested by varying the gap long-shore width and the device alignment. Despite the model limitations, i.

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Cardona, Camilo Jaramillo, Jara Martinez Sanchez, Mauricio Gonzalez Rodriguez, and Raul Medina Santamaria. "A SHORELINE EVOLUTION MODEL BASED ON EQUILIBRIUM FORMULATIONS." Coastal Engineering Proceedings, no. 36v (December 28, 2020): 19. http://dx.doi.org/10.9753/icce.v36v.sediment.19.

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Traditionally, the shoreline hindcast under the influence of changing marine conditions has been considered by means of existing robust shoreline evolution models, such as one-line, multi-line, combined or 3D models. All of them require long data series, many calibration parameters and are computationally intensive. This study presents a new shoreline evolution model considering the integration of cross-shore, planform and rotation equilibrium-based models, applicable over time-scales spanning days, months or several years. The new model successfully reaches the general erosion-accretion trend

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Kopteva, Anna, and Alexey Lukin. "Constructive features of the bank protection structure of water recreation facility in Arkhangelsk." MATEC Web of Conferences 170 (2018): 03025. http://dx.doi.org/10.1051/matecconf/201817003025.

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The objective of the study is projecting and calculation of shore protection structure of the water recreation facility in northern climatic conditions of Arkhangelsk city. In the course of study, three constructive solutions including anchored or non-anchored Larsen dowel wall were projected based on geotechnical conditions of Arkhangelsk. Geotechnical conditions include physico-mechanical and strength characteristics of soils, determined in accordance with the geological regulations. The calculation of bank protection structures was performed in PLAXIS 3D Foundation package by the finite ele

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Weisson, Ernesto H., Mauro Fittipaldi, Carlos A. Concepcion, Daniel Pelaez, Landon Grace, and David T. Tse. "Automatisiertes kontaktloses Mapping der Gesichtstopographie, 3-dimensionaler Druck und Silikonguss von Orbitalprothesen." Kompass Ophthalmologie 8, no. 4 (2022): 171–79. http://dx.doi.org/10.1159/000527589.

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<b>Zweck:</b> Eine Proof-of-Concept-Workflow-Studie zur Herstellung von maßgefertigten Orbitalprothesen nach Exenteration durch automatisierten kontaktlosen Scan, 3D-Druck und Silikonguss. <b>Ausführung:</b> Nicht vergleichende, interventionelle Fallreihe. · <underline>Setting</underline>: Monozentrische institutionelle Studie. · <underline>Studienpopulation</underline>: Drei Patienten, die das Tragen der vom Okularisten hergestellten Exenterationsprothese aufgrund veränderter Passform, Verfärbung oder Materialdegradation eingestellt haben. · &lt

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Schlégl, Ádám Tibor, Roland Told, Kinga Kardos, András Szőke, Zoltan Ujfalusi, and Péter Maróti. "Evaluation and Comparison of Traditional Plaster and Fiberglass Casts with 3D-Printed PLA and PLA–CaCO3 Composite Splints for Bone-Fracture Management." Polymers 14, no. 17 (2022): 3571. http://dx.doi.org/10.3390/polym14173571.

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Bone fractures pose a serious challenge for the healthcare system worldwide. A total of 17.5% of these fractures occur in the distal radius. Traditional cast materials commonly used for treatment have certain disadvantages, including a lack of mechanical and water resistance, poor hygiene, and odors. Three-dimensional printing is a dynamically developing technology which can potentially replace the traditional casts. The aim of the study was to examine and compare the traditional materials (plaster cast and fiberglass cast) with Polylactic Acid (PLA) and PLA–CaCO3 composite materials printed u

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