caa a22 4500 463194993 CHVBK 20180406164920.0 cr unu---uuuuu 170326e20071201xx s 000 0 eng 10.1007/s10669-007-9061-4 doi (NATIONALLICENCE)springer-10.1007/s10669-007-9061-4 A new technique for reducing extremely low frequency magnetic field emissions affecting large building structures [Elektronische Daten] [E. Salinas, J. Atalaya, Y. Hamnerius, C. Solano, D. Gonzales, C. Contreras, C. Leon, M. Sumari, S. Dimitriou, M. Rezinkina] When large structures such as residential compounds or public buildings are under the influence of extremely low frequency (ELF) magnetic fields, such as the one generated by a system of railways fed by 16.67Hz, standard methods of designing shielding structures by numerical methods usually fail. The latter can be explained by the difficulty posed in the computing process by the large aspect ratios involved due to thin layers of metal (a few millimetres or centimetres) in contrast to the large dimensions of the affected structure (several tens of meters). In some cases one has to utilize special approximations such as surface conductivity, which are not easy to handle when the designed shielding structure is clearly three -dimensional. Other alternatives such as experimentation insitu are very costly. Here, a new technique is presented of mitigating the field by using three-dimensional propagation of induced currents optimizing the field reduction factors and minimizing the cost of shielding material. The particular designing method is a hybrid of numerical simulations combined with lab experimentation using scaled models of the large structure. The method is rather cost-effective and flexible as various designs can be easily tested. Results are presented in the form of magnetic field values, at various locations in the buildings, before and after this mitigation technique is applied. Springer Science+Business Media, LLC, 2007 Salinas E. Centre of Physical Electronics and Materials, (PEM) Faculty of Engineering, Science and the Built Environment, London South Bank University, 103 Borough Road, SE1 0AA, London, UK aut Atalaya J. Chalmers University Of Technology, Gothenburg, Sweden aut Hamnerius Y. Chalmers University Of Technology, Gothenburg, Sweden aut Solano C. Universidad Nacional De Ingeniería, Lima, Peru aut Gonzales D. Universidad Nacional De Ingeniería, Lima, Peru aut Contreras C. Universidad Nacional De Ingeniería, Lima, Peru aut Leon C. Universidad Nacional De Ingeniería, Lima, Peru aut Sumari M. Universidad Nacional De Ingeniería, Lima, Peru aut Dimitriou S. Centre of Physical Electronics and Materials, (PEM) Faculty of Engineering, Science and the Built Environment, London South Bank University, 103 Borough Road, SE1 0AA, London, UK aut Rezinkina M. National Polytechnic University (KPI), Kharkov, Ukraine aut The Environmentalist Springer US; http://www.springer-ny.com 27/4(2007-12-01), 571-576 0251-1088 27:4<571 2007 27 10669 https://doi.org/10.1007/s10669-007-9061-4 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10669-007-9061-4 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Salinas E. Centre of Physical Electronics and Materials, (PEM) Faculty of Engineering, Science and the Built Environment, London South Bank University, 103 Borough Road, SE1 0AA, London, UK aut NATIONALLICENCE 700 1- Atalaya J. Chalmers University Of Technology, Gothenburg, Sweden aut NATIONALLICENCE 700 1- Hamnerius Y. Chalmers University Of Technology, Gothenburg, Sweden aut NATIONALLICENCE 700 1- Solano C. Universidad Nacional De Ingeniería, Lima, Peru aut NATIONALLICENCE 700 1- Gonzales D. Universidad Nacional De Ingeniería, Lima, Peru aut NATIONALLICENCE 700 1- Contreras C. Universidad Nacional De Ingeniería, Lima, Peru aut NATIONALLICENCE 700 1- Leon C. Universidad Nacional De Ingeniería, Lima, Peru aut NATIONALLICENCE 700 1- Sumari M. Universidad Nacional De Ingeniería, Lima, Peru aut NATIONALLICENCE 700 1- Dimitriou S. Centre of Physical Electronics and Materials, (PEM) Faculty of Engineering, Science and the Built Environment, London South Bank University, 103 Borough Road, SE1 0AA, London, UK aut NATIONALLICENCE 700 1- Rezinkina M. National Polytechnic University (KPI), Kharkov, Ukraine aut NATIONALLICENCE 773 0- The Environmentalist Springer US; http://www.springer-ny.com 27/4(2007-12-01), 571-576 0251-1088 27:4<571 2007 27 10669 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer