Journal: Journal of Physics: Conference Series

Abbreviation

J. Phys.: Conf. Ser.

Publisher

IOP Publishing

Journal Volumes

ISSN

1742-6588
1742-6596

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Publications 1 - 10 of 304
  • Design and experimental verification of an extended KDamper - based vibration absorber
    Item type: Conference Paper
    Mantakas, Antonios; Chondrogiannis, Kyriakos Alexandros; Kalderon, Moris; et al. (2024)
    Journal of Physics: Conference Series ~ XII International Conference on Structural Dynamics
    Recently, researchers have proposed an innovative negative stiffness-based vibration control concept, namely the KDamper absorber. The envisaged mechanism comprises a combination of appropriate stiffness, damping and mass elements, including a negative stiffness element. Previous studies have formulated the mathematical framework of the system, as well as design and optimization algorithms. These take into consideration the application of interest and geometrical and manufacturing limitations, regarding the vibration control components, including the realization of the negative stiffness mechanics. The KDamper has been numerically and analytically implemented as a vibration control concept for seismic protection of bridges, buildings as well as wind turbines and noise mitigation panels, while results indicated its beneficial effect towards vibration attenuation. For the first time, an experimental set-up of the proposed mechanism is designed by adopting an optimization procedure and tested under horizontal harmonic and seismic shaking. Results highlight the vibration control properties of the proposed system and validate previous numerical and analytical studies. The experimental device serves as a proof of concept of the KDamper absorber and showcases its advantages as well as application limitations that should be considered in future research.
  • A new approach for the ortho-positronium lifetime determination in a vacuum cavity
    Item type: Conference Paper
    Vigo, Carlos; Raaijmakers, Mark; Gerchow, Lars; et al. (2018)
    Journal of Physics: Conference Series
  • Towards a 100-kton LAr experiment
    Item type: Other Conference Item
    Rubbia, André (2011)
    Journal of Physics: Conference Series
  • Broadband X-ray full field microscopy at a superbend
    Item type: Conference Paper
    Stampanoni, M.; Marone, F.; Mikuljan, G.; et al. (2009)
    Journal of Physics: Conference Series
  • Slave-boson mean-field study of the dimensional crossover in Sr2RuO4
    Item type: Journal Article
    Fischer, M.H.; Sigrist, M. (2010)
    Journal of Physics: Conference Series
  • Nanorobotics for creating NEMS from 3D helical nanostructures
    Item type: Conference Paper
    Dong, Lixin; Zhang, Li; Bell, Dominik J.; et al. (2007)
    Journal of Physics: Conference Series
  • Gap structure and exotic superconducting state of URu2Si2
    Item type: Conference Paper
    Kasahara, Y.; Iwasawa, T.; Shishido, H.; et al. (2009)
    Journal of Physics: Conference Series
  • Antiferromagnetic order in the FFLO state
    Item type: Conference Paper
    Yanase, Youichi; Sigrist, Manfred (2008)
    Journal of Physics: Conference Series
  • Estimating surface utilization factors for BIPV applications using pix2pix on street captured façade images
    Item type: Conference Paper
    Duran, Ayça; Waibel, Christoph; Schlueter, Arno (2023)
    Journal of Physics: Conference Series ~ CISBAT International Conference 2023: Renewable Energy
    While techniques for assessing solar potential, particularly on roofs, are well-established, estimating solar potential on building facades often requires more work due to the complexity of urban features and the elaborate design of building facades. Existing methods to assess the solar potential of building facades often neglect the characteristics of individual facades. This study presents an image-based method for a more accurate estimation of the PV potential of facades. The proposed method is composed of four steps: (1) data acquisition, preprocessing, and manual labeling, (2) training a pixel-wise semantic image segmentation model based on Generative Adversarial Networks (GANs), (3) color content analysis of segmented images, and (4) estimating the annual solar energy potential. We apply the proposed workflow to several buildings in Zurich, Switzerland, and evaluate segmentation quality and resulting changes in façade surface utilization factors. In a comparative analysis between the widely used web-based solar potential assessment tools, Sonnenfassade, Global Solar Atlas and the simulation software Climate Studio, we demonstrate the downstream impact of surface utilization factors on resulting solar potentials. Considerable deviations in façade availability for BIPV deployments among the various tools as compared to our segmentation approach indicate the potential impact of the proposed method on policy-making and the benefits for BIPV design and planning.
  • Phase change dispersion, potentially a new class of heat transfer fluids
    Item type: Conference Paper
    Fischer, Ludger J.; von Arx, Silvan; Wechsler, Ueli; et al. (2016)
    Journal of Physics: Conference Series
    The authors present values and an application of a phase change dispersion, where the dispersed phase change material within water changes from solid to liquid while absorbing heat and changes from liquid to solid while releasing heat at constant temperature. The phase change enthalpy increases the "apparent specific heat capacity" significantly in comparison to water. As the heat transfer takes place at constant temperature, the heat transfer fluid itself remains at constant temperature while absorbing heat. Isothermal heating and cooling of devices with a liquid is feasible.
Publications 1 - 10 of 304