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  • 1
    Electronic Resource
    Electronic Resource
    Finite Element Analysis of Hybrid Rotary Friction Welding and Investigating the Effects of Pressure on Variations of Temperature and Strain Values (2008)
    s.l. ; Stafa-Zurich, Switzerland
    Materials science forum Vol. 580-582 (June 2008), p. 287-290 
    Details
    ISSN: 1662-9752
    Source: Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Hybrid Rotary Friction Welding is a modified type of common rotary friction welding processes. Inthis welding method, parameters such as pressure, angular velocity and time of welding controltemperature, stress, strain and their variations which play an important rule in defining optimumprocess parameter combinations in order to improve the design and manufacturing of weldingmachines and quality of welded parts. Thermo-mechanical simulation of friction welding has beencarried out. It has been shown that simulation is an important tool for prediction of generated heatand strain at the weld interface and can be used for prediction of microstructure and evaluation ofquality of welds. For simulation of Hybrid Rotary Friction Welding a commercial finite elementprogram has been used and the effects of pressure on temperature and strain variations have beeninvestigated
    Type of Medium: Electronic Resource
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/02/18/transtech_doi~10.4028%252Fwww.scientific.net%252FMSF.580-582.287.pdf
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  • 2
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    Evaluation of daily seismicity forecasting of earthquake sequences in southwest Iceland (2023)
    In:  XXVIII General Assembly of the International Union of Geodesy and Geophysics (IUGG)
    Details
    Publication Date: 2023-07-07
    Description: The largest earthquakes in Iceland take place in two transform zones, more populated one in Southwest Iceland consists of the Reykjanes Peninsula Oblique Rift zone (RPOR), in the proximity of the capital region of Reykjavik where 2/3 of the country’s population resides, and the South Iceland Seismic Zone (SISZ) with larger seismic potential that coincides with Iceland's largest agricultural region. Recently, three strong earthquakes in the zone caused damage and were well-recorded on the regional networks: 17-June-2000 (Mw6.4), 21-June-2000 (Mw6.5) and 29-May-2008 (Mw6.3). Each of them was followed by intense aftershock sequences on the ruptured fault and across the SISZ-RPOR.A transparent operational aftershock forecasting (OAF) system aims to improve community awareness and preparedness to respond effectively and efficiently to local authorities in the immediate aftermath of a strong earthquake, thus speeding up the recovery process during a severe seismic sequence. At present, such a platform is not in general use in Iceland. To explore the feasibility of such a system, retrospective and prospective experiments are necessary. This study independently evaluates a Bayesian spatiotemporal epidemic-type aftershock sequence (ETAS) model, calibrated to three strong sequences in southwest Iceland, using the Collaboratory for the Study of Earthquake Predictability (CSEP) framework. The initial results of the model evaluation are presented, with the final goal of automatically and objectively evaluating the Bayesian ETAS model against prospective data running at the Icelandic Meteorological Office for operational use. Overall, this study aims at implementing an OAF system in Iceland to enhance aftershock predictability and improve earthquake resiliency.
    Language: English
    Type: info:eu-repo/semantics/conferenceObject
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