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Please use this identifier to cite or link to this item: http://hdl.handle.net/2122/7752
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dc.contributor.authorallD'Anna, Marco; Università degli Studi di Palermoen
dc.contributor.authorallIngrassia, Tommaso; Università degli Studi di Palermoen
dc.contributor.authorallMangano, Giorgio; Istituto Nazionale di Geofisica e Vulcanologia, Sezione CNT, Roma, Italiaen
dc.contributor.authorallNigrelli, Vincenzo; Università degli Studi di Palermoen
dc.date.accessioned2012-02-21T12:17:19Zen
dc.date.available2012-02-21T12:17:19Zen
dc.date.issued2011-06-15en
dc.identifier.urihttp://hdl.handle.net/2122/7752en
dc.description.abstractThe OBS (acronym of Ocean Bottom Seismometer) is a system to monitor the submarine seismic activity. To properly work, an OBS system needs a suitable auto-levelling base to maintain a fixed (horizontal) position during the measurement phases. In this work a new auto-levelling base for submarine seismic sensors has been designed. During the redesign process a preliminary phase of analysis of the state of art has been made. Afterwards, the technological solutions chosen by different manufactures have been critically analysed, and a full description of their functionalities, working principles and system performances has been carried out. Later, some innovative concepts have been proposed. Among these ones, the most interesting are the auto-levelling bases with spherical joint, based on: air bearings, ball bearings and magnetic levitation systems. The concept scoring method has been used to identify. as best concept, the auto-levelling base with spherical joint and air bearings system. Successively, the chosen concept has been implemented: the technical working principles have been studied to choose the best solutions in terms of dimensions, shapes, materials of all base components. A full parametric CAD model of the auto-levelling base has been also created. The new designed base, by using a very innovative auto-levelling system, allows to obtain very good results as regards the accuracy of positioning, so ensuring a remarkable improvement of the performances of the ocean bottom seismometers.en
dc.language.isoEnglishen
dc.relation.ispartofIMProVe 2011 - International conference on Innovative Methods in Product Designen
dc.subjectOBSen
dc.subjectAuto-Levelling Baseen
dc.subjectSubmarine seismic sensoren
dc.subjectGimbalsen
dc.subjectOcean Bottom Seismometeren
dc.titleRedesign of an auto-levelling base for submarine seismic sensoren
dc.typeConference paperen
dc.description.statusPublisheden
dc.identifier.URLhttp://www.improve2011.it/Full_Paper/95.pdfen
dc.subject.INGV04. Solid Earth::04.02. Exploration geophysics::04.02.07. Instruments and techniquesen
dc.description.ConferenceLocationVenice, Italyen
dc.relation.references[1] D’Anna G., Mangano G., D’Alessandro A., D’Anna R., Passafiume L., Speciale S., Amato A. (2009), “Il nuovo OBS/H dell’INGV”, Quaderni di geofisica, Istituto Nazionale Di Geofisica e Vulcanologia, n.65. [2] D’Anna G., Mangano G., D’Alessandro A., D’Anna R., Passafiume L., Speciale S., (2008), “First long time OBS campaign in the Ionian Sea”, Rapporti tecnici INGV, Istituto Nazionale Di Geofisica e Vulcanologia, No.72. [3] D’Anna G. Mangano G., D’Alessandro A., D’Anna R., Passafiume L., Speciale S., Passarello S. (2009), “Progetto Messina 1098 - 2008/Rapporto della campagna OBS nell’area Eoliana e dello stretto di Messina”, Rapporti tecnici INGV, Istituto Nazionale Di Geofisica e Vulcanologia, No.98. [4] G. H. Sutton et al. (1965), “Ocean-Bottom Seismic Observatories”, Proceedings of the IEEE, Vol.53, No.12. [5] Timothy W. Barash et al. (1994), “Quantitative Evaluation of a Passively Leved Ocean Bottom Seismometer”, Marine Geophysical Researches, Vol. 16, No. 5, pp. 347-363. [6] Thwaites F.T. et al. (2005), “A Levelling System for an Ocean-Bottom Seismometer”, Proceedings of MTS/ IEEE, OCEANS, Vol. 2, pp. 1268 - 1272 [7] Guralp System, CMG-40TOBS. <http://www.guralp.com/products/40TOBS/>, agg. 2010 [8] Guralp System (2001), “Triaxial Broadband Ocean Bottom (OBS)”, Guralp Oceanic Bottom, Aldermaston, UK, Guralp System. [9] F.Cappello, T.Ingrassia, A.Mancuso, V.Nigrelli (2003), “Approccio Metodico alla Riprogettazione di un Semirimorchio”, Tools and Methods Evolution in Engineering Design, Napoli 2003. [10] Nanometrics (2006), Specifications, “Trillium 120P Seismometer User Guide”, Kanata, Ontario, Canada, Nanometrics. [11] Nanometrics (2009), Specifications, “Trillium Compact User Guide”, Kanata, Ontario, Canada, Nanometrics. [12] Karl T. Ulrich, Steven D. Eppinger, Progettazione e Sviluppo del Prodotto, McGraw-Hill -2007. [13] New Way Air Bearings, USA (2010), Custom Spherical Air Bearings, Aston. [14] SKF (2006), Catalogo generale, Gruppo SKF, pp. 138-139. [15] Harris T., Widbro L. (2003), “Magnetic Bearings: From Product Innovation to Proven Solution”, Evolution, SKF, pp.24-28. [16] W. K. S. Khoo, S. D. Garvey, K. Kalita (2007), “The Specific Load Capacity of Radial-Flux Radial Magnetic Bearings”, IEEE Transection on Magnetic, IEEE, Vol.43, No.7. [17] www.fasit.it - Fasit S.R.L., Bombole in materiale composito, MSA, Trieste. [18] Diveitaly, Erogatori, <http://www.diveitaly.com/a_esperti/davicino/erog01.htm [19] New Way Air Bearings, <www.newwayairbearings.com>, agg. 2010. [20] New Way Air Bearings, USA (2006), Air Bearings Application and Design Guide, Aston. [21] Andrew J. Devitt (1999), Air Bearings Take Off, New Way Machine Components Inc., Aston. [22] Andrew J. Devitt, Chairman and Chief Technology Officer New Way Air Bearings (1999), Porous Vs Orifice Air Bearings Technology, New Way Air Bearings, Aston. [23] Asao Oya (2003), “Polymer Blend Technique for Designing Carbon Materials”, Carbon Alloys – Novel Concept to Developed Carbon Science and Technology, E, Yasuda et al., first edition, Oxford, Elsevier, cap. 8.en
dc.description.obiettivoSpecifico2.5. Laboratorio per lo sviluppo di sistemi di rilevamento sottomarinien
dc.publisherLibreria Cortina - Padovaen
dc.description.fulltextopenen
dc.contributor.authorD'Anna, Marcoen
dc.contributor.authorIngrassia, Tommasoen
dc.contributor.authorMangano, Giorgioen
dc.contributor.authorNigrelli, Vincenzoen
dc.contributor.departmentUniversità degli Studi di Palermoen
dc.contributor.departmentUniversità degli Studi di Palermoen
dc.contributor.departmentIstituto Nazionale di Geofisica e Vulcanologia (INGV), Sezione ONT, Roma, Italiaen
dc.contributor.departmentUniversità degli Studi di Palermoen
item.openairetypeConference paper-
item.cerifentitytypePublications-
item.languageiso639-1en-
item.grantfulltextopen-
item.openairecristypehttp://purl.org/coar/resource_type/c_18cf-
item.fulltextWith Fulltext-
crisitem.author.deptUniversità degli Studi di Palermo-
crisitem.author.deptUniversità degli Studi di Palermo-
crisitem.author.deptIstituto Nazionale di Geofisica e Vulcanologia (INGV), Sezione ONT, Roma, Italia-
crisitem.author.deptUniversità degli Studi di Palermo-
crisitem.author.parentorgIstituto Nazionale di Geofisica e Vulcanologia-
crisitem.classification.parent04. Solid Earth-
crisitem.department.parentorgIstituto Nazionale di Geofisica e Vulcanologia-
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