Experimental and finite element fatigue assessment of the spring clip of the SKL-1 railway fastening system.

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Title: Experimental and finite element fatigue assessment of the spring clip of the SKL-1 railway fastening system.
Authors: Ferreño, Diego1 (AUTHOR) ferrenod@unican.es, Casado, José Antonio1 (AUTHOR), Carrascal, Isidro Alfonso1 (AUTHOR), Diego, Soraya1 (AUTHOR), Ruiz, Estela1 (AUTHOR), Saiz, María1 (AUTHOR), Sainz-Aja, José Adolfo1 (AUTHOR), Cimentada, Ana Isabel1 (AUTHOR)
Source: Engineering Structures. Jun2019, Vol. 188, p553-563. 11p.
Subjects: Railroads, Railroad accidents, Thermomechanical treatment, Springs (Mechanisms)
Abstract: Highlights • A FE model of the SKL-1 system was developed and experimentally validated. • The mechanical response and the fatigue behavior were satisfactorily reproduced. • A novel method was implemented to assess the influence of mean stress on fatigue. • The FE model shows that fatigue alone cannot be the failure mechanism of spring clips under in-service conditions. Abstract The fastening system that links the rail and the sleeper in railway lines is an element of high responsibility, since its failure may lead to the derailment of the train. This paper combines an experimental approach and a Finite Element model to assess the structural integrity of the spring clip of the SKL-1 fastening system, used assiduously in high-speed lines. Our results prove that fatigue is not the failure mechanism that explains the fractures of clips as pointed out by other authors, provided the following requirements: the material has received the appropriate thermomechanical treatments; the assembly of the clip has been carried out with precision; and the system has not suffered anomalous in-service overloads. [ABSTRACT FROM AUTHOR]
Copyright of Engineering Structures is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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  Data: Experimental and finite element fatigue assessment of the spring clip of the SKL-1 railway fastening system.
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  Data: <searchLink fieldCode="AR" term="%22Ferreño%2C+Diego%22">Ferreño, Diego</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> ferrenod@unican.es</i><br /><searchLink fieldCode="AR" term="%22Casado%2C+José+Antonio%22">Casado, José Antonio</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Carrascal%2C+Isidro+Alfonso%22">Carrascal, Isidro Alfonso</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Diego%2C+Soraya%22">Diego, Soraya</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Ruiz%2C+Estela%22">Ruiz, Estela</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Saiz%2C+María%22">Saiz, María</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Sainz-Aja%2C+José+Adolfo%22">Sainz-Aja, José Adolfo</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Cimentada%2C+Ana+Isabel%22">Cimentada, Ana Isabel</searchLink><relatesTo>1</relatesTo> (AUTHOR)
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  Data: <searchLink fieldCode="JN" term="%22Engineering+Structures%22">Engineering Structures</searchLink>. Jun2019, Vol. 188, p553-563. 11p.
– Name: Subject
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  Data: <searchLink fieldCode="DE" term="%22Railroads%22">Railroads</searchLink><br /><searchLink fieldCode="DE" term="%22Railroad+accidents%22">Railroad accidents</searchLink><br /><searchLink fieldCode="DE" term="%22Thermomechanical+treatment%22">Thermomechanical treatment</searchLink><br /><searchLink fieldCode="DE" term="%22Springs+%28Mechanisms%29%22">Springs (Mechanisms)</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: Highlights • A FE model of the SKL-1 system was developed and experimentally validated. • The mechanical response and the fatigue behavior were satisfactorily reproduced. • A novel method was implemented to assess the influence of mean stress on fatigue. • The FE model shows that fatigue alone cannot be the failure mechanism of spring clips under in-service conditions. Abstract The fastening system that links the rail and the sleeper in railway lines is an element of high responsibility, since its failure may lead to the derailment of the train. This paper combines an experimental approach and a Finite Element model to assess the structural integrity of the spring clip of the SKL-1 fastening system, used assiduously in high-speed lines. Our results prove that fatigue is not the failure mechanism that explains the fractures of clips as pointed out by other authors, provided the following requirements: the material has received the appropriate thermomechanical treatments; the assembly of the clip has been carried out with precision; and the system has not suffered anomalous in-service overloads. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
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  Data: <i>Copyright of Engineering Structures is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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RecordInfo BibRecord:
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      – Type: doi
        Value: 10.1016/j.engstruct.2019.03.053
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      – Code: eng
        Text: English
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        PageCount: 11
        StartPage: 553
    Subjects:
      – SubjectFull: Railroads
        Type: general
      – SubjectFull: Railroad accidents
        Type: general
      – SubjectFull: Thermomechanical treatment
        Type: general
      – SubjectFull: Springs (Mechanisms)
        Type: general
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      – TitleFull: Experimental and finite element fatigue assessment of the spring clip of the SKL-1 railway fastening system.
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            NameFull: Ferreño, Diego
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            NameFull: Casado, José Antonio
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              M: 06
              Text: Jun2019
              Type: published
              Y: 2019
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              Value: 188
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