Searched for: subject%3A%22Shields%22
(1 - 20 of 99)

Pages

document
Kostaras, Christos (author), Pavlou, C. (author), Galiotis, Costas (author), Dassios, Konstantinos G. (author)
As an emerging class of materials, nanocarbons have attracted significant interest for practical applications due to their remarkable mechanical, electrical and thermal properties coupled with high surface areas and tunable surface chemistry. However, challenges like high aspect ratios and poor dispersibility in polymer matrices hinder their...
review 2024
document
Jiang, Xi (author), Zhang, X. (author), Zhang, Xiao (author), Long, Luyuan (author), Bai, Yun (author), Huang, Baoshan (author)
The development of modern cities has often led to increased traffic congestion and limited usable space. One effective solution to these problems is to construct roadway tunnels, which can expand urban space and alleviate traffic congestion. However, building large underpass tunnels in urban areas, especially in soft ground, presents...
journal article 2024
document
Azevedo Vasconcelos, A.C. (author), Valiya Valappil, S. (author), Schott, D.L. (author), Jovanova, J. (author), Aragon, A.M. (author)
Underwater noise resulting from the monopile driving process can cause severe damage to marine wildlife, such as hearing injury, behavioral disturbance, or even death. Although current noise-attenuation techniques used in this process have shown a significant noise reduction at high frequency ranges, mitigating low-frequency noise is still...
journal article 2024
document
Li, Peinan (author), Liu, Xue (author), Jiang, Xi (author), Zhang, X. (author), Wu, Jun (author), Chen, Peixin (author)
Quasi-rectangular shield tunneling is a cutting-edge trenchless method for constructing metro tunnels with double tubes, owing to its advantages in saving underground space and reducing ground disturbance. However, the conventional quasi-rectangular shield tunneling method is not applicable when constructing a tunnel without a center pillar,...
journal article 2024
document
Feng, Zhiyao (author), Wang, Shuying (author), Qu, Tongming (author), Zheng, X. (author), Ling, Fanlin (author)
Water spewing and muck plugging often occur during earth pressure balance (EPB) shield machines tunnelling in water-rich sandy strata, even though the conventional foam has been employed to condition sandy soils. In this study, a novel thickened foaming agent suitable for EPB shield tunnelling in water-rich sandy strata is developed. In...
journal article 2024
document
Chen, Huan (author), Zhang, Zhaoyu (author), Guo, R. (author), Han, Xutao (author), Zhang, Xuanrui (author), Lin, Junhao (author)
The gas state of the insulating gas significantly impacts the development and extent of the partial discharge (PD) in gas-insulated switchgear (GIS). Correlating these two factors allows for a more comprehensive diagnosis of insulation defects. At present, the ultrahigh-frequency (UHF) method has been widely used for PD detection in GIS....
journal article 2024
document
de Vos, B. (author), Remis, R.F. (author), Webb, A. (author)
MRI systems have a thin conducting layer placed between the gradient and RF coils, this acts as a shield at the RF-frequency, minimizing noise coupled into the experiment, and decreasing the coupling between the RF and gradient coils. Ideally, this layer should be transparent to the gradient fields to reduce eddy currents. In this work the...
journal article 2024
document
Harazim, Mateusz (author)
The issue of space debris in Low Earth Orbit is a growing concern that requires comprehensive solutions. This includes preventing further pollution, removing existing debris, and designing resilient spacecraft that can withstand impacts. This thesis focuses on the improvement of spacecraft shielding structures to provide effective protection...
master thesis 2023
document
Oliveira, Filipa M. (author), Azadmanjiri, Jalal (author), Wang, Xuehang (author), Yu, Minghao (author), Sofer, Zdeněk (author)
The development of new materials for electromagnetic interference (EMI) shielding is an important area of research, as it allows for the creation of more effective and high-efficient shielding solutions. In this sense, MXenes, a class of 2D transition metal carbides and nitrides have exhibited promising performances as EMI shielding materials...
review 2023
document
Jiang, Xi (author), Zhu, Hehua (author), Yan, Zhiguo (author), Zhang, Fengshou (author), Ye, Fei (author), Li, Peinan (author), Zhang, X. (author), Dai, Zhiren (author), Bai, Yun (author), Huang, Baoshan (author)
Backfill grouting plays a vital role in shield tunneling. This paper aims to present a comprehensive review of the development and progress of backfill grouting materials specifically designed for shield tunneling. Initially, the various components of grouts, such as pozzolanic materials, filling fine aggregates, and chemical additives, are...
journal article 2023
document
Sattari, R. (author), van Zeijl, H.W. (author), Zhang, Kouchi (author)
This study presents the design and fabrication of an in-package relative humidity sensor for epoxy molding compound (EMC) packages. The sensor comprises shielded interdigital electrodes (SIDE) for in-situ monitoring of humidity absorption/desorption in the package encapsulation layer. A novel approach is employed in the device fabrication to...
conference paper 2023
document
Formisani, Ludovica (author)
The space community is currently focusing on defining system architectures able to perform multiple interplanetary missions to support deep space exploration. In particular, placing orbital propellant depots in strategic locations in space would allow to increase the useful payload mass at launch. Despite all the efforts that are being invested...
master thesis 2022
document
Vanhamel, J. (author), Eaton, Nicholas (author), Spreij, Roemer (author)
Currently, the amount of space debris is increasing rapidly due to the tremendous amount of satellite launches. Having an autonomous re-entry system aboard satellites at their end-of life, creates possibilities in the frame of lowering space debris, as well as for sample return from space. This paper aims at describing two possible deployment...
conference paper 2022
document
Garner, E. (author), Wu, J. (author), Zadpoor, A.A. (author)
Recent advances in 3D printable micro-architected materials offer unprecedented possibilities for the development of highly tailored orthopaedic implants. These devices, which are typically made from fully solid materials, significantly alter load transmission to the surrounding bone tissue, potentially leading to interface instability and bone...
journal article 2022
document
Mier Escurra, C. (author), Mor, A. R. (author)
Recent research has found that Magnetic loop antennas can detect partial discharges (PD) in gas-insulated substations (GIS); however, unbalanced shielded loop (UBSL) antennas are affected by electric field coupling. This research proposes a balanced shielded loop (BSL) adapted for GIS PD sensing with different designs. The frequency response and...
conference paper 2022
document
Zoon, Job (author)
In the past few years, there has been much research in the field of Autonomous Vehicles (AV). If AVs are implemented in our daily lives, this could have many advantages. Before this can happen, safe driver models need to be designed which control the AVs. One technique that is suitable to create these models is Reinforcement Learning (RL). A...
master thesis 2021
document
Vieira, A.E. (author)
Today's globalized world depends on civil air transportation, which has been continuously growing over the last decades. Nevertheless, the sustainability of this expansion is a challenge due to environmental problems. Along with greenhouse gas emissions, noise represents a severe hazard for human health, and consequently, noise regulations limit...
doctoral thesis 2021
document
Štumpf, Martin (author), Antonini, Giulio (author), Lager, I.E. (author), Vandenbosch, Guy A.E. (author)
Closed-form time-domain (TD) analytical expressions describing the electromagnetic (EM) signal transfer between two vertical dipoles through a thin, highly contrasting layer with combined magneto-dielectric properties are derived via the Cagniard–DeHoop (CdH) technique with the TD saltus-type conditions. The TD EM-field coupling between the...
journal article 2021
document
Stijnman, Peter R.S. (author), Mandija, Stefano (author), Fuchs, P.S. (author), van den Berg, Cornelis A.T. (author), Remis, R.F. (author)
Purpose: To remove the necessity of the tranceive phase assumption for CSI-EPT and show electrical properties maps reconstructed from measured data obtained using a standard 3T birdcage body coil setup. Methods: The existing CSI-EPT algorithm is reformulated to use the transceive phase rather than relying on the transceive phase assumption....
journal article 2021
document
Raja, Anand (author)
The society of Delft Aerospace Rocket Engineering (DARE) aims at launching the Stratos IV sounding rocket to an apogee of 100km; thus cementing their place as one of the few student teams that have had the unique opportunity to design and build a rocket that is capable of reaching the frontiers of space. In doing so, DARE has entered flight...
master thesis 2020
Searched for: subject%3A%22Shields%22
(1 - 20 of 99)

Pages