6. | Z. Arslanturk; A. Sezgin; O. Sayginer İnce Film Optik Filtreler İçin Otomatize Tasarim Sistemi (in Turkish) (Conference) 21st National Photonics Workshop (Fotonik ’19), Koc University, Istanbul, Turkey, 2019. @conference{cOllab3b,
title = {İnce Film Optik Filtreler İçin Otomatize Tasarim Sistemi (in Turkish)},
author = {Z. Arslanturk and A. Sezgin and O. Sayginer},
url = {https://collab.sayginer.com/ifofo/abstract-poster-presented-in-fotonik-19-workshop-in-turkish/},
year = {2019},
date = {2019-09-12},
booktitle = {21st National Photonics Workshop (Fotonik ’19)},
journal = {21st National Photonics Workshop (Fotonik ’19),},
address = {Koc University, Istanbul, Turkey},
keywords = {Conference, Supervised Work},
pubstate = {published},
tppubtype = {conference}
}
|
5. | Rocco di Filippo; Giuseppe Abbiati; Osman Sayginer; Patrick Covi; Oreste S Bursi; Fabrizio Paolacci Numerical Surrogate Model of a Coupled Tank-Piping System for Seismic Fragility Analysis With Synthetic Ground Motions (Proceedings) vol. Volume 8: Seismic Engineering, 2019, (V008T08A029). @proceedings{10.1115/PVP2019-93685,
title = {Numerical Surrogate Model of a Coupled Tank-Piping System for Seismic Fragility Analysis With Synthetic Ground Motions},
author = {Rocco di Filippo and Giuseppe Abbiati and Osman Sayginer and Patrick Covi and Oreste S Bursi and Fabrizio Paolacci},
doi = {10.1115/PVP2019-93685},
year = {2019},
date = {2019-01-01},
volume = {Volume 8: Seismic Engineering},
series = {Pressure Vessels and Piping Conference},
abstract = {Seismic risk evaluation of coupled systems of industrial plants often needs the implementation of complex finite element models to consider their multicomponent nature. These models typically rely on significant computational resources. Moreover, the relationships between seismic action, system response and relevant damage levels are often characterized by a high level of nonlinearity, thus requiring a solid background of experimental data. Furthermore, fragility analyses depend on the adoption of a significant number of seismic waveforms generally not available when the analysis is site-specific. To propose a methodology able to manage these issues, we present a possible approach for a seismic reliability analysis of a coupled tank-piping system. The novelty of this approach lies in the adoption of artificial accelerograms, FE models and experimental hybrid simulations to evaluate a surrogate meta-model of our system. First, to obtain the necessary input for a stochastic ground motion model able to generate synthetic ground motions, a disaggregation analysis of the seismic hazard is performed. Hereafter, we reduce the space of parameters of the stochastic ground motion model by means of a global sensitivity analysis upon the seismic response of our system. Hence, we generate a large set of synthetic ground motions and select, among them, a few signals for experimental hybrid simulations. In detail, the hybrid simulator is composed by a numerical substructure to predict the sliding response of a steel tank, and a physical substructure made of a realistic piping network. Furthermore, we use these experimental results to calibrate a refined ANSYS FEM. More precisely, we focus on tensile hoop strains in elbow pipes as a leading cause for leakage, monitoring them with strain gauges. Thus, we present the procedure to evaluate a numerical Kriging meta-model of the coupled system based on both experimental and finite element model results. This model will be adopted in a future development to carry out a seismic fragility analysis.},
note = {V008T08A029},
keywords = {Conference, Proceeding, Scopus Indexed},
pubstate = {published},
tppubtype = {proceedings}
}
Seismic risk evaluation of coupled systems of industrial plants often needs the implementation of complex finite element models to consider their multicomponent nature. These models typically rely on significant computational resources. Moreover, the relationships between seismic action, system response and relevant damage levels are often characterized by a high level of nonlinearity, thus requiring a solid background of experimental data. Furthermore, fragility analyses depend on the adoption of a significant number of seismic waveforms generally not available when the analysis is site-specific. To propose a methodology able to manage these issues, we present a possible approach for a seismic reliability analysis of a coupled tank-piping system. The novelty of this approach lies in the adoption of artificial accelerograms, FE models and experimental hybrid simulations to evaluate a surrogate meta-model of our system. First, to obtain the necessary input for a stochastic ground motion model able to generate synthetic ground motions, a disaggregation analysis of the seismic hazard is performed. Hereafter, we reduce the space of parameters of the stochastic ground motion model by means of a global sensitivity analysis upon the seismic response of our system. Hence, we generate a large set of synthetic ground motions and select, among them, a few signals for experimental hybrid simulations. In detail, the hybrid simulator is composed by a numerical substructure to predict the sliding response of a steel tank, and a physical substructure made of a realistic piping network. Furthermore, we use these experimental results to calibrate a refined ANSYS FEM. More precisely, we focus on tensile hoop strains in elbow pipes as a leading cause for leakage, monitoring them with strain gauges. Thus, we present the procedure to evaluate a numerical Kriging meta-model of the coupled system based on both experimental and finite element model results. This model will be adopted in a future development to carry out a seismic fragility analysis. |
4. | Osman Sayginer; Cesare Meroni; Alessandro Chiasera; Francesco Scotognella; Anna Lukowiak; Giorgio Speranza; Stefano Varas; Lidia Zur; Giancarlo C. Righini; Roberta Ramponi; Oreste Bursi; Maurizio Ferrari Er3+ 1-D photonic band gap structure for photonic band edge assisted spontaneous emission enhancement (Conference) 1st International Conference on Dielectric Photonic Devices and Systems Beyond Visible Bari, Italy, 2018. @conference{Sayginer2018,
title = {Er3+ 1-D photonic band gap structure for photonic band edge assisted spontaneous emission enhancement},
author = {Osman Sayginer and Cesare Meroni and Alessandro Chiasera and Francesco Scotognella and Anna Lukowiak and Giorgio Speranza and Stefano Varas and Lidia Zur and Giancarlo C. Righini and Roberta Ramponi and Oreste Bursi and Maurizio Ferrari },
url = {http://d-photon.fbk.eu/home},
year = {2018},
date = {2018-10-01},
address = {Bari, Italy},
organization = {1st International Conference on Dielectric Photonic Devices and Systems Beyond Visible},
keywords = {Conference},
pubstate = {published},
tppubtype = {conference}
}
|
3. | Osman Sayginer; Gullu Kiziltas Integrated topology optimization of volumetric antenna substrates and conductor surfaces for broadband microstrip patch antennas (Conference) Metamaterial Based Designs, vol. MO-UB.1P.7, no. 1925, International Symposium on Antennas and Propagation and USNC-URSI Radio Science Meeting IEEE, San Diego, California, USA, 2017. @conference{Sayginer2017a,
title = {Integrated topology optimization of volumetric antenna substrates and conductor surfaces for broadband microstrip patch antennas},
author = {Osman Sayginer and Gullu Kiziltas},
url = {http://2017apsursi.org/Papers/ViewPapers.asp?PaperNum=1925},
year = {2017},
date = {2017-07-10},
booktitle = {Metamaterial Based Designs},
volume = {MO-UB.1P.7},
number = {1925},
publisher = {IEEE},
address = {San Diego, California, USA},
organization = {International Symposium on Antennas and Propagation and USNC-URSI Radio Science Meeting},
keywords = {Conference},
pubstate = {published},
tppubtype = {conference}
}
|
2. | Osman Sayginer; Gullu Kiziltas Fabrication of functionally graded ceramic- polymer dielectrics via freeze casting for RF applications (Conference) Materials and Packaging, vol. MO-UA.1P.2, no. 2593, International Symposium on Antennas and Propagation and USNC-URSI Radio Science Meeting IEEE, San Diego, California, USA, 2017. @conference{Sayginer2017b,
title = {Fabrication of functionally graded ceramic- polymer dielectrics via freeze casting for RF applications},
author = {Osman Sayginer and Gullu Kiziltas},
url = {http://2017apsursi.org/Papers/ViewPapers.asp?PaperNum=2593},
year = {2017},
date = {2017-07-10},
booktitle = {Materials and Packaging},
volume = {MO-UA.1P.2},
number = {2593},
publisher = {IEEE},
address = {San Diego, California, USA},
organization = {International Symposium on Antennas and Propagation and USNC-URSI Radio Science Meeting},
keywords = {Conference},
pubstate = {published},
tppubtype = {conference}
}
|