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Journal articles on the topic 'Assembly by densified dowels'

Author: Grafiati
Published: 8 June 2024
Last updated: 31 July 2025

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1

Han, Lei, Andreja Kutnar, Jakub Sandak, Iztok Šušteršič, and Dick Sandberg. "Adhesive-and Metal-Free Assembly Techniques for Prefabricated Multi-Layer Engineered Wood Products: A Review on Wooden Connectors." Forest 14, no. 2 (2023): 311. https://doi.org/10.3390/f14020311.

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Engineered wood products (EWPs) are being increasingly used as construction materials. EWPs are currently being made using synthetic adhesives or metal fasteners, which lead to poor recyclability and reusability. Therefore, this review paper focused on emerging adhesive- and metal-free assembling techniques including wood dowels, rotary-dowel welding, wooden nails, and dovetail joining as alternative ways of making prefabricated EWPs. This will contribute towards green construction and optimising the building process to minimise its negative impact on the environment and its inhabitants, while
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2

Han, Lei, Andreja Kutnar, Jakub Sandak, Iztok Šušteršič, and Dick Sandberg. "Adhesive- and Metal-Free Assembly Techniques for Prefabricated Multi-Layer Engineered Wood Products: A Review on Wooden Connectors." Forests 14, no. 2 (2023): 311. http://dx.doi.org/10.3390/f14020311.

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Engineered wood products (EWPs) are being increasingly used as construction materials. EWPs are currently being made using synthetic adhesives or metal fasteners, which lead to poor recyclability and reusability. Therefore, this review paper focused on emerging adhesive- and metal-free assembling techniques including wood dowels, rotary-dowel welding, wooden nails, and dovetail joining as alternative ways of making prefabricated EWPs. This will contribute towards green construction and optimising the building process to minimise its negative impact on the environment and its inhabitants, while
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3

Riggio, Mariapaola, Dusan Pauliny, Jakub Sandak, and Anna Sandak. "Novel Nail-Like Wood Connectors." Advanced Materials Research 778 (September 2013): 647–54. http://dx.doi.org/10.4028/www.scientific.net/amr.778.647.

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In traditional timber structures, hardwood connectors such as a nails, wedges, dowels and pegs have been used as reinforcement of carpentry joints or to fix wooden ceiling matts or floor boards. In the study reported, the possibility to rely on enhanced mechanical and technological properties of densified wood, for the production of wooden nails to be used in the repair of traditional timber structures is discussed. The wood used for connectors were domestic wood species; ash, beech, black locust and poplar. Wooden blocks were exposed to densification procedure with the purpose of increasing t
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4

Guan, Z. W., and P. D. Rodd. "A three-dimensional finite element model for locally reinforced timber joints made with hollow dowel fasteners." Canadian Journal of Civil Engineering 27, no. 4 (2000): 785–97. http://dx.doi.org/10.1139/l00-018.

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Brittle premature failure caused by splitting parallel to the timber grain is a common failure mode in glulam joints made with solid dowel type fasteners. It is thought that this problem can be alleviated by using hollow steel dowels as the fasteners and reinforcing the timber locally in the area of the joint. In this way, by varying the wall thickness of the dowels and the thickness of the reinforcing members, a chosen combination of strength and stiffness should be attainable together with a ductile failure mode. In this paper, three-dimensional nonlinear finite element models are developed
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5

Grönquist, Philippe, Thomas Schnider, Andreas Thoma, et al. "Investigations on densified beech wood for application as a swelling dowel in timber joints." Holzforschung 73, no. 6 (2019): 559–68. http://dx.doi.org/10.1515/hf-2018-0106.

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AbstractFor robotic fabrication of wooden structures, the simple, quick and tight joining of elements can be solved using swelling hardwood dowels. This topic has been the focus of the present study, and the set-recovery capacity of densified wood (dW) as dowel material was investigated. European beech was compressed in the radial direction at 103°C and 10% moisture content (MC) to a compression ratio of 40%. Multiple swelling and shrinkage cycles were applied to measure swelling behavior, swelling pressure development and combined swelling and creep under compressive loading. It has been demo
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6

Ercan, Ersin, Kadir Aydin, Cansu Özder, and Musa Atar. "The effect of the densification process on dowel tensile performance with different types of glues." Folia Forestalia Polonica 64, no. 4 (2022): 214–25. http://dx.doi.org/10.2478/ffp-2022-0021.

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Abstract This study was performed to determine the effects of the densification process and glue type in wood material on dowel tensile performance. For this purpose, 8 mm and 10 mm diameter dowels were obtained from black poplar (Populus nigra) and Eastern spruce (Picea orientalis L.), which were densified at 50% and 75% ratios. The dowels were bonded with PVAc and D-VTKA glue separately after drilling 18 mm deep holes in the edge of the melamine-coated particleboard. The tensile performance test was determined with the Universal test device according to TS 2475 and ASTM-D 1035 principles. As
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7

Kasal, Ali, Jerzy Smardzewski, Tolga Kuşkun, and Ersan Güray. "Analyses of L-Type Corner Joints Connected with Auxetic Dowels for Case Furniture." Materials 16, no. 13 (2023): 4547. http://dx.doi.org/10.3390/ma16134547.

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Tests were carried out to develop and manufacture various types of auxetic dowels using 3D printing technology. These dowels were then used to connect L-type corner joint specimens for case furniture, and their strength and stiffness were analyzed through experimental, theoretical, and numerical means. In the scope of the study, eight different types of auxetic dowels including two inclusion types, two inclusion sizes, and two dowel hole diameters, as well as a reference non-auxetic dowel, were designed. Accordingly, a total of 180 specimens that included 10 replications for each group were te
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8

O'Ceallaigh, Conan, Michael Conway, Sameer Mehra, and Annette M. Harte. "Numerical Investigation of Reinforcement of Timber Elements in Compression Perpendicular to the Grain using Densified Wood Dowels." Construction and Building Materials 288 (June 2021): 122990. http://dx.doi.org/10.1016/j.conbuildmat.2021.122990.

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9

Bocquet, J. F., A. Pizzi, and L. Resch. "Full-scale industrial wood floor assembly and structures by welded-through dowels." Holz als Roh- und Werkstoff 65, no. 2 (2007): 149–55. http://dx.doi.org/10.1007/s00107-006-0170-4.

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10

Pakuła, Weronika, Barbara Prałat, Zbigniew Potok, Krzysztof Wiaderek, and Tomasz Rogoziński. "Energy Consumption for Furniture Joints during Drilling in Birch Plywood." Polymers 16, no. 8 (2024): 1045. http://dx.doi.org/10.3390/polym16081045.

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The purpose of this study is to support eco-design ideas and sustainable manufacturing techniques by examining the energy consumption related to drilling holes for different furniture connections. The experimental model is a simple piece of furniture made from birch plywood with three different types of joints. Eccentric joints, confirmat screws, and dowel measurements of energy consumption with a CNC drilling and milling machine show different values for every kind of connector. The energy consumption was measured using a portable power quality analyzer, specifically the PQ-box 150 manufactur
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11

Rezabeigi, Ehsan, Gabriele Griffanti, and Showan N. Nazhat. "Effect of Fibrillization pH on Gelation Viscoelasticity and Properties of Biofabricated Dense Collagen Matrices via Gel Aspiration-Ejection." International Journal of Molecular Sciences 24, no. 4 (2023): 3889. http://dx.doi.org/10.3390/ijms24043889.

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Reconstituted hydrogels based on the self-assembly of acid-solubilized collagen molecules have been extensively used as in vitro models and precursors in biofabrication processes. This study investigated the effect of fibrillization pH—ranging from 4 to 11—on real-time rheological property changes during the gelation of collagen hydrogels and its interplay with the properties of subsequently biofabricated dense collagen matrices generated via automated gel aspiration-ejection (GAE). A contactless, nondestructive technique was used to characterize the temporal progression in shear storage modul
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12

Šimek, Milan, Eva Haviarová, and Carl Eckelman. "The end distance effect of knock-down furniture fasteners on bending moment resistance of corner joints." Acta Universitatis Agriculturae et Silviculturae Mendelianae Brunensis 56, no. 2 (2008): 203–10. http://dx.doi.org/10.11118/actaun200856020203.

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The goal of this paper is to investigate the effect of the end distance of cam lock fasteners on the bending moment resistance of knock-down corner joints. The preliminary study of knock-down furniture assembly plans was done in order to discover the manufacturers’ fastener typical usage in case construction. Laminated particleboard, cam fasteners and wooden dowels were used for specimen construction. L-shaped joint specimens 760 mm in length were tested by pressing the joint members together – also called a compression test in the angle plane. The study results showed that cam fasteners with
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13

Johanides, Marek, Antonin Lokaj, Pavel Dobes, and David Mikolasek. "Numerical and Experimental Analysis of the Rotational Stiffness of a Timber Semi-Rigid Dowel-Type Connection." Materials 15, no. 16 (2022): 5622. http://dx.doi.org/10.3390/ma15165622.

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The paper deals with the analysis of the rotational stiffness of a semirigid connection created from a system of two stands and a rung. The connection was made from glued laminated timber with metal mechanical dowel-type fasteners. Not only a common combination of bolts and dowels but also fully threaded screws were used for the connection. The aim of the research and its motivation was to replace commonly used fasteners with more modern ones, to shorten and simplify the assembly time, and to improve the load-carrying capacity of this type of connection. Each of these two types of connection w
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14

Alvarez, Noe, Pankaj Gupta, Connor Rahm, Vandna Gupta, and Chethani Ruhunage. "Carbon Nanotubes from Synthesis to Picomolar Detection Electrochemical Sensors." ECS Meeting Abstracts MA2022-01, no. 9 (2022): 762. http://dx.doi.org/10.1149/ma2022-019762mtgabs.

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Electrochemistry at open ends and sidewalls of carbon nanotubes (CNTs) has been under debate, with opposing viewpoints as to which sites are more electrochemically active. A particular challenge in this field has been the ability to conduct electrochemical studies selectively at the open-ends of CNTs, without measuring contributions from the sidewalls. This talk will discuss the synthesis and assembly of CNTs into electrochemical sensor where open-ended CNTs were employed for electrochemical measurements. The assembly employs drawable CNTs that minimize sample handling and contamination, in th
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15

Li, Ya Yun, Bo Li, Jing Bo Sun, Kun Peng Cai, Ji Zhou, and Long Tu Li. "Direct Write Assembly of 3-Dimensional Structures with Aqueous-Based Piezoelectric Inks." Key Engineering Materials 512-515 (June 2012): 390–94. http://dx.doi.org/10.4028/www.scientific.net/kem.512-515.390.

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A kind of aqueous based suspensions of lead lanthanum zirconnate titanate (PLZT) was developed for direct ink writing (DIW) assembly. Piezoelectric ceramic woodpile structures with diameter of 315-470μm were fabricated from these inks by using DIW. The preparation of aqueous based piezoelectric inks, the principle of DIW and the sintering process were systematically discussed. The ink with solids volume fraction over 70% by 1 day aging reveals shear-thinning behavior and proper viscoelastic properties, which ensures a feasible extrusion in the whole shaping process. The PLZT samples sintered a
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16

Gu, Ye, QingPeng Zhang, and XueZhe Cao. "Monocular Vision-Based 3D Reconstruction Method for Parts in Opto-Mechanical Assembly." Journal of Physics: Conference Series 2891, no. 3 (2024): 032030. https://doi.org/10.1088/1742-6596/2891/3/032030.

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Abstract In automated assembly, accurately capturing multi-dimensional parameters of parts is essential. Traditional methods include teaching methods or laser-based approaches, with the former relying on experience for pre-calibration and the latter being costly. This paper proposes a low-cost, monocular vision-based method for 3D reconstruction in opto-mechanical assembly. Taking the laser crystal component, including the laser gain medium and its heat sink, in a solid-state laser as an example, a monocular camera is firstly mounted on a robot and captures images of parts from specific angles
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17

Johanides, Marek, Antonin Lokaj, Pavel Dobes, and David Mikolasek. "Numerical and Experimental Analysis of the Load-Carrying Capacity of a Timber Semi-Rigid Dowel-Type Connection." Materials 15, no. 20 (2022): 7222. http://dx.doi.org/10.3390/ma15207222.

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The paper deals with the analysis of the load-carrying capacity of a timber semi-rigid connection created from a system of two stands and a rung. The connection was made from glued laminated timber with metal mechanical dowel-type fasteners. Not only a common combination of bolts and dowels, but also fully threaded screws were used for the connection. The aim of the research and its motivation was to replace these commonly used fasteners with more modern ones, to shorten and simplify the assembly time, and to improve the load-carrying capacity of this type of connection. Each of these two type
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18

Albertin, Fauzia, Maria Pia Morigi, Matteo Bettuzzi, et al. "X-ray Tomography Unveils the Construction Technique of Un-Montu’s Egyptian Coffin (Early 26th Dynasty)." Journal of Imaging 8, no. 2 (2022): 39. http://dx.doi.org/10.3390/jimaging8020039.

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The Bologna Archaeological Museum, in cooperation with prestigious Italian universities, institutions, and independent scholars, recently began a vast investigation programme on a group of Egyptian coffins of Theban provenance dating to the first millennium BC, primarily the 25th–26th Dynasty (c. 746–525 BC). Herein, we present the results of the multidisciplinary investigation carried out on one of these coffins before its restoration intervention: the anthropoid wooden coffin of Un-Montu (Inv. MCABo EG1960). The integration of radiocarbon dating, wood species identification, and CT imaging e
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19

Wang, Zhiyuan, Feng Wang, and Huihui Liu. "Digital Image Correlation-Based Investigation of the Shear Performance of Connection Systems of Assembled Bamboo Scrimber–Lightweight Concrete Composite Beams." Materials 17, no. 13 (2024): 3268. http://dx.doi.org/10.3390/ma17133268.

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To investigate the shear performance of assembled bamboo scrimber (BS)-lightweight concrete (LC) connection systems, three groups of nine BS-LC shear connections were fabricated in this work using BS, LC, dowels, and grout. The experimental parameters included the dowel diameter and fabrication process (cast-in-place vs. assembly). Push-out tests were conducted on the specimens, and traditional linear variable displacement transducer (LVDT) measurements and the advanced digital image correlation (DIC) technique were employed to determine performance indicators such as the cross-section slip of
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20

Saad, Ahmad S., Taha A. Ahmed, and Ali I. Radwan. "In-Plane Lateral Performance of AAC Block Walls Reinforced with CFPR Sheets." Buildings 12, no. 10 (2022): 1680. http://dx.doi.org/10.3390/buildings12101680.

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This study evaluates the structural behavior of aerated autoclave concrete (AAC) blocks laterally loaded in the in-plane direction under quasi-static loading. The study started with the evaluation of the basic physical properties of the AAC blocks, including its structural properties (individually and as part of an assembly), followed by large-scale testing of two (half-scaled) walls constructed with commercially available AAC blocks. The first wall was unreinforced, similar to the commonly used construction technique for low-rise houses where AAC blocks are utilized. The second one was intern
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21

Bertetto, Amedeo Manuello, and Federico Riberi. "Form-finding of pierced vaults and digital fabrication of scaled prototype." Curved and Layered Structures 8, no. 1 (2021): 210–24. http://dx.doi.org/10.1515/cls-2021-0020.

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Abstract The new serious consideration to masonry and non-metallic structures evidenced their direct prospective to be, even in the present days, advanced architectural and engineering solutions. In the present paper, a form finding for a cement based tessellated pierced vault is studied. The multi-body rope approach (MRA) was used to define compression-only vault optimal shapes. Successively, the thrust network analysis (TNA) was implemented by Rhino-vault for a further validation of the shape and the definition of different tessellation meshes of the surfaces, according to different hole pat
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22

Qiu, Meikang, Emil Khisamutdinov, Zhengyi Zhao, et al. "RNA nanotechnology for computer design and in vivo computation." Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences 371, no. 2000 (2013): 20120310. http://dx.doi.org/10.1098/rsta.2012.0310.

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Molecular-scale computing has been explored since 1989 owing to the foreseeable limitation of Moore's law for silicon-based computation devices. With the potential of massive parallelism, low energy consumption and capability of working in vivo , molecular-scale computing promises a new computational paradigm. Inspired by the concepts from the electronic computer, DNA computing has realized basic Boolean functions and has progressed into multi-layered circuits. Recently, RNA nanotechnology has emerged as an alternative approach. Owing to the newly discovered thermodynamic stability of a specia
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23

Dimitrov, Nikolay, Ezer Castillo, Michael Njuki, and Abdullah Faisal Pasha. "Nanoporous Cu-Sn Intermetallic Material for Interconnects in Electronic Packaging." ECS Meeting Abstracts MA2023-02, no. 21 (2023): 1279. http://dx.doi.org/10.1149/ma2023-02211279mtgabs.

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Nanostructured and nanoparticulate Cu-based materialshave emerged as viable replacements of conventional solder materials for realizing high-performing and reliable interconnection in today's 2.5D/3D electronic packaging. Unlike the traditional interconnects, those materials offer better compliance during the overall packaging routines. Owing to their highly developed surface area resulting of their uniform interconnected porosity, said nanomaterials also enable joint formation by sintering by thermal compression realized at high pressure and at much lower temperatures compared to bulk counter
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24

Khelifa, Mourad, Trong Tuan Tran, Amar Khennane, Marc Oudjene, and Yann Rogaume. "Thermal response of timber connections using densified wood dowels under fire." Journal of Fire Sciences, June 6, 2024. http://dx.doi.org/10.1177/07349041241257262.

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A new type of timber connection using densified wood dowels is being developed and tested. The procedure involves inserting these densified dowels into pre-drilled holes. As this connection technique is in its early stages, a unique design approach is necessary, considering the impact of temperature variations. The primary goal is to characterize the thermal behaviour of these connections under elevated temperatures. The study employs an experimental approach, complemented by numerical analysis, innovatively applying kinetic models, commonly used for investigating heat-related biomass characte
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25

Xu, Bo-Han, Shi-Yuan Jiao, Bi-Lin Wang, and Abdelhamid Bouchaïr. "Mechanical Performance of Timber-to-Timber Joints with Densified Wood Dowels." Journal of Structural Engineering 148, no. 4 (2022). http://dx.doi.org/10.1061/(asce)st.1943-541x.0003317.

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26

Xu, Bo-Han, Yi-Ge Zhao, Kong-Bin Yu, Abdelhamid Bouchaïr, and Binsheng Zhang. "Pull-Out Performance of Densified Wood Dowels Embedded into Glued Laminated Timber." Journal of Materials in Civil Engineering 35, no. 9 (2023). http://dx.doi.org/10.1061/jmcee7.mteng-15299.

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27

Xu, Bo-Han, Kong-Bin Yu, Shi-Yuan Jiao, Yan-Hua Zhao, and Binsheng Zhang. "Pull-Out Performance of Timber Joints with Glued-In Densified Wood Dowels." Journal of Materials in Civil Engineering 35, no. 8 (2023). http://dx.doi.org/10.1061/jmcee7.mteng-15610.

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28

Shabanian, Milad, and Nicole Leo Braxtan. "Thermo-mechanical behavior of CLT beam-to-girder assemblies connected with T-shaped dowelled connections before, during and after fire exposure." Journal of Structural Fire Engineering, December 21, 2022. http://dx.doi.org/10.1108/jsfe-04-2022-0015.

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Purpose3-ply cross-laminated timber (CLT) is used to investigate the thermo-mechanical performance of intermediate-size assemblies comprised of T-shaped welded slotted-in steel doweled connections and CLT beams at ambient temperature (AT), after and during non-standard fire exposure.Design/methodology/approachThe first set of experiments was performed as a benchmark to find the load-carrying capacity of the assembly and investigate the failure modes at AT. The post-fire performance (PFP) test was performed to investigate the residual strength of the assembly after 30-min exposure to a non-stan
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29

Shabanian, Milad, and Nicole Leo Braxtan. "Thermomechanical behavior of Glulam-beam connected to CLT-wall assemblies with steel doweled connections before, during and after fire." Journal of Structural Fire Engineering, December 7, 2022. http://dx.doi.org/10.1108/jsfe-02-2022-0007.

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PurposeThermomechanical behavior of intermediate-size beam-to-wall assemblies including Glulam-beams connected to cross-laminated timber (CLT) walls with T-shape steel doweled connections was investigated at ambient temperature (AT) and after and during non-standard fire exposure.Design/methodology/approachThree AT tests were conducted to evaluate the load-carrying capacity and failure modes of the assembly at room temperature. Two post-fire performance (PFP) tests were performed to study the impact of 30-min (PFP30) and 60-min (PFP60) partial exposure to a non-standard fire on the residual st
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30

Huang, Haoyu, and Wen-Shao Chang. "Enhancing resilience in timber connections with SMA dowel and DVW reinforcement." Proceedings of the Institution of Civil Engineers - Engineering History and Heritage, November 21, 2023, 1–12. http://dx.doi.org/10.1680/jenhh.23.00009.

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Dowel-type timber connections are commonly found in historic buildings and require reinforcement and repair to ensure their resilience against natural disasters is maintained. This study aims to enhance the resilience of dowel-type connections by equipping them with shape memory alloy (SMA) dowels and densified veneer wood (DVW) reinforcement. The research findings reveal that the performance of SMA bars under cyclic bending is superior to that of steel, in terms of self-centring effect and ductility. Dynamic testing of the SMA-dowelled timber connections shows that connections using SMA exhib
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31

Shabanian, Milad, and Nicole Leo Braxtan. "Thermo-mechanical behavior of Glulam beam-to-girder assemblies with steel doweled connections before, during and after fire." Journal of Structural Fire Engineering, January 20, 2022. http://dx.doi.org/10.1108/jsfe-04-2021-0018.

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Purpose The purpose of this paper is to investigate the thermo-mechanical behavior of intermediate-size glued-laminated beam-to-girder assemblies connected with T-shaped slotted-in steel doweled connections at ambient temperature (AT), after and during non-standard fire exposure. Design/methodology/approach AT tests were performed using a universal testing machine (UTM) to evaluate the load-carrying capacity and failure modes of the assembly at room temperature. Post-fire-performance (PFP) tests were conducted to study the impact of 30-min and 60-min partial exposure to a non-standard fire on
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32

Xu, Bo-Han, Shi-Yuan Jiao, Xiang Liu, Abdelhamid Bouchaïr, and Binsheng Zhang. "Mechanical Behavior of Timber Joints with Laterally Loaded Multiple Densified Wood Dowels under the Loading Parallel to the Grain." Journal of Structural Engineering 150, no. 10 (2024). http://dx.doi.org/10.1061/jsendh.steng-13693.

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33

S. Rodriguez, Rennier, Maiden Grace R. Maming, and Frederick Ray I. Gomez. "Package and Process Design Augmentation of QFN Leadframe Device." Journal of Engineering Research and Reports, January 21, 2020, 1–6. http://dx.doi.org/10.9734/jerr/2019/v9i417026.

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Innovations and breakthroughs either through process, equipment or material is known in semiconductor industries as a positive option in overcoming the existing limitations and assembly handicaps. This presentation discusses the assembly methodology and packaging design of a quad-flat no-leads (QFN) devices using grid design molding tool and leadframe with exposed copper tie bar. Realization of this improved package design proposed the removal of mechanical blade as the primary cutting technique of separating the molded leadframes likewise assembly rejection and defect related to the mechanica
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34

Dutta, Pronoy, Sujit Kumar Deb, Amalika Patra, et al. "Activating Ion Channels in Collapsed Hydrogel Derived Densified MXene Films with Cellulose Nanofibers to Overcome the Areal Versus Volumetric Capacitance Trade‐Off." Small, April 26, 2024. http://dx.doi.org/10.1002/smll.202400119.

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AbstractConcomitant achievement of all three performance pillars of a supercapacitor device, namely gravimetric, areal, and volumetric capacitance is a grand challenge. Nevertheless, its fulfilment is indispensable for commercial usage. Although, high compactness is the fundamental requirement to achieve high volumetric performance, it severely affects ion transportation in thick electrodes. Such trade‐off makes it extremely challenging to realize very high areal and volumetric performance simultaneously. Here, a collapsed hydrogel strategy is introduced to develop MXene/cellulose nanofiber (C
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35

Elafify, Mohamed S., Toru Itagaki, Nermeen A. Elkasabgy, Sinar Sayed, Yoshihiro Ito, and Motoki Ueda. "Reversible Transformation of Peptide Assembly Between Densified-Polysarcosine-Driven Kinetic and Helix-Orientation-Driven Thermodynamic Stable Morphologies." Biomaterials Science, 2023. http://dx.doi.org/10.1039/d3bm00714f.

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Stimuli-responsive transformable biomaterials development can be manipulated practically by fine-tuning the built-in molecular design of their structural segments. Here, we demonstrate a peptide assembly by the bola-type amphiphilic polypeptide, glycolic...
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36

Li, Peng, Ziqiu Wang, Yuxiang Qi, et al. "Bidirectionally promoting assembly order for ultrastiff and highly thermally conductive graphene fibres." Nature Communications 15, no. 1 (2024). http://dx.doi.org/10.1038/s41467-024-44692-7.

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AbstractMacroscopic fibres assembled from two-dimensional (2D) nanosheets are new and impressing type of fibre materials besides those from one-dimensional (1D) polymers, such as graphene fibres. However, the preparation and property-enhancing technologies of these fibres follow those from 1D polymers by improving the orientation along the fibre axis, leading to non-optimized microstructures and low integrated performances. Here, we show a concept of bidirectionally promoting the assembly order, making graphene fibres achieve synergistically improved mechanical and thermal properties. Concentr
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37

Rodriguez, Rennier, and Frederick Ray Gomez. "Semiconductor QFN Package with Advanced Interlocking Design." Journal of Engineering Research and Reports, April 6, 2020, 1–6. http://dx.doi.org/10.9734/jerr/2020/v12i117069.

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The mechanical interlocking structure for quad-flat no-lead (QFN) assembly for densified leadframe degrades as the package becomes thinner. Detractors such as package reliability and design requirement hinder further qualification of leadframes with increased number of input/output (I/O) pins. In this paper, a new and advanced design of leadframe is discussed and presented with improvement in mechanical interlocking structure of high stress areas such as lead and pad junction. The leadframe is re-designed having lead lines on the lead and pad that will be etched away after molding process repl
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38

Liu, Chen-Hui, Zhong-Hao Wang, Yin-Hui Huang, et al. "Merging One‐ and Multi‐Photon Processes in Hydrogen‐Bonded Organic Frameworks for Enhanced NIR Light‐Driven Photothermal and Photochemical Conversions." Angewandte Chemie, June 17, 2025. https://doi.org/10.1002/ange.202511088.

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Direct application of near‐infrared (NIR) light for solar‐thermal and solar‐chemical conversions is of emergent interest to improving efficiency in solar‐energy utilization. Herein, we report a synthetic approach to NIR‐responsive materials by self‐assembly of hydrogen‐bonded organic frameworks (HOF‐1/2/3) from multifunctionalized Ru‐components incorporating chiral, photoactive, H‐bonding, π‐stacking, and protonation/deprotonation subunits. Significantly, protonation of the imidazole‐subunits in HOF‐3 promotes densified packing to extend NIR‐absorption tail up to 1100 nm with a narrowed bandga
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39

Liu, Chen-Hui, Zhong-Hao Wang, Yin-Hui Huang, et al. "Merging One‐ and Multi‐Photon Processes in Hydrogen‐Bonded Organic Frameworks for Enhanced NIR Light‐Driven Photothermal and Photochemical Conversions." Angewandte Chemie International Edition, June 17, 2025. https://doi.org/10.1002/anie.202511088.

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Direct application of near‐infrared (NIR) light for solar‐thermal and solar‐chemical conversions is of emergent interest to improving efficiency in solar‐energy utilization. Herein, we report a synthetic approach to NIR‐responsive materials by self‐assembly of hydrogen‐bonded organic frameworks (HOF‐1/2/3) from multifunctionalized Ru‐components incorporating chiral, photoactive, H‐bonding, π‐stacking, and protonation/deprotonation subunits. Significantly, protonation of the imidazole‐subunits in HOF‐3 promotes densified packing to extend NIR‐absorption tail up to 1100 nm with a narrowed bandga
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40

Bock, Brian T., and Paul A. Okamoto. "EVALUATION OF DOWEL PLACEMENT USING A DOWEL BAR INSERTER." Proceedings of the International Conference on Concrete Pavements, January 4, 2025. https://doi.org/10.33593/iccp.v4i1.910.

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This paper presents the results of several field investigations to evaluate the effectiveness of automatic dowel bar inserter equipment to properly place dowel bars in rigid pavements. Results of three studies using the ground penetrating radar technique to measure dowel bar misalignment are summarized. Two investigations were sponsored by the Demonstration Projects Division of the Federal Highway Administration. The third radar survey was sponsored by the Wisconsin Department of Transportation, Madison, Wisconsin. A commercially available radar system capable of locating steel embedded in con
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Nishiyama, Norikazu, Shunsuke Tanaka, Yoshiyuki Egashira, Yoshiaki Oku, Akira Kamisawa, and Korekazu Ueyama. "Synthesis of Ordered Nanoporous Silica Film With High Structural Stability." MRS Proceedings 716 (2002). http://dx.doi.org/10.1557/proc-716-b5.2.

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AbstractA mesoporous silica film was prepared on a silicon substrate using a spin-coating process followed by a tetraethyl orthosilicate (TEOS) vapor treatment. The stability of a formed silica network before TEOS treatment is thought to be insufficient because the rate of the condensation reaction is not high at temperatures below 453 K. The density of silica wall surrounding surfactant assembly could be low, resulting in the structural contraction with the formation of a silica network. On the other hand, the TEOS-treated mesoporous silica film did not contract during calcination, showing hi
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42

Xue, Chao, Yanran Zhao, Yuantai Liao, and Hongyu Zhang. "Bioinspired Super‐Robust Conductive Hydrogels for Machine Learning‐Assisted Tactile Perception System." Advanced Materials, February 3, 2025. https://doi.org/10.1002/adma.202416275.

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AbstractConductive hydrogels have attracted significant attention due to exceptional flexibility, electrochemical property, and biocompatibility. However, the low mechanical strength can compromise their stability under high stress, making the material susceptible to fracture in complex or harsh environments. Achieving a balance between conductivity and mechanical robustness remains a critical challenge. In this study, super‐robust conductive hydrogels were designed and developed with highly oriented structures and densified networks, by employing techniques such as stretch‐drying‐induced dire
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43

Nemani, Srinivasa Kartik, Nicola Gilli, Steven Goldy, et al. "Ti3C2Tx MXene‐Zirconium Diboride Based Ultra‐High Temperature Ceramics." Advanced Science, April 30, 2025. https://doi.org/10.1002/advs.202500487.

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AbstractMXenes are a family of two‐dimensional (2D) transition metal carbides, nitrides, and carbonitrides with potential applications in ceramics and composites due to their nanometer‐thick morphology, hydrophilic surfaces, and negative zeta potentials. In this study, we investigated titanium carbide MXene (Ti3C2Tx) as an additive in ultra‐high‐temperature ceramics (UHTCs), specifically zirconium diboride (ZrB2). Homogeneous green bodies of Ti3C2Tx and ZrB2 were synthesized via electrostatic self‐assembly in aqueous media without surfactants and subsequently densified using field‐assisted (sp
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Rosner, Maria, Sahin Cangaz, Arthur Dupuy, et al. "Toward Higher Energy Density All‐Solid‐State Batteries by Production of Freestanding Thin Solid Sulfidic Electrolyte Membranes in a Roll‐to‐Roll Process." Advanced Energy Materials, January 10, 2025. https://doi.org/10.1002/aenm.202404790.

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AbstractAll‐solid‐state batteries (SSB) show great promise for the advancement of high‐energy batteries. To maximize the energy density, a key research interest lies in the development of ultrathin and highly conductive solid electrolyte (SE) layers. In this work, thin and flexible sulfide solid electrolyte membranes are fabricated and laminated onto a non‐woven fabric using a scalable and solvent‐free, continuous roll‐to‐roll process (DRYtraec). These membranes show significantly improved tensile strength compared to unsupported sheets, which facilitates cell assembly and allows a continuous
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45

Luo, Alan A., Diran Apelian, and Alan I. Taub. "Toward Material Circularity and Manufacturing Sustainability in the Automotive Industry." Journal of Advanced Manufacturing and Processing, June 2, 2025. https://doi.org/10.1002/amp2.70017.

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ABSTRACTThis paper reviews technologies being developed toward material circularity and manufacturing sustainability in the automotive industry; aluminum sustainability is used herein as an exemplar. While aluminum is increasingly used for lightweighting applications in the transportation industries to reduce energy consumption and carbon footprint, primary production of aluminum is energy‐intensive with significant CO2 emissions. However, remelting aluminum scrap only uses ~5% of the energy, resulting in significantly reduced emissions required to produce primary aluminum from bauxite ore. Th
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Taneja, Sorab, Will Tenpas, Mehul Jain, et al. "Simulation device for shoulder reductions: overview of prototyping, testing, and design instructions." Advances in Simulation 8, no. 1 (2023). http://dx.doi.org/10.1186/s41077-023-00246-3.

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Abstract Background Shoulder dislocations are common occurrences, yet there are few simulation devices to train medical personnel on how to reduce these dislocations. Reductions require a familiarity with the shoulder and a nuanced motion against strong muscle tension. The goal of this work is to describe the design of an easily replicated, low-cost simulator for training shoulder reductions. Materials and methods An iterative, stepwise engineering design process was used to design and implement ReducTrain. A needs analysis with clinical experts led to the selection of the traction-countertrac
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