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Abstract: High responsibility thermoplastic components subjected to dynamic forces show serious in-service thermal limitations. This paper shows that adding the adequate material with a phase-change, PCM, to a thermoplastic matrix component significantly increases its fatigue life. To do this, the fatigue resistance of short fibre-glass reinforced polyamide is analysed by means of monotonous fatigue tests on tensile specimens. Next, the design of the pieces of this material, used in high-speed rail fastenings, is optimised for fatigue efforts by means of accelerated single-piece tests. Finally, it is verified that the fatigue resistance of these pieces endowed with hydrated salt, Na2S2O3$5H2O, which acts as a PCM, increases by a surprising 400% with respect to the reference pieces without PCM.
Fuente: Composites Part B 93 (2016) 115-122
Editorial: Elsevier
Fecha de publicación: 01/03/2016
Nº de páginas: 8
Tipo de publicación: Artículo de Revista
DOI: 10.1016/j.compositesb.2016.02.059
ISSN: 1359-8368,1879-1069
Url de la publicación: http://dx.doi.org/10.1016/j.compositesb.2016.02.059
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JOSE ANTONIO CASADO DEL PRADO
FEDERICO GUTIERREZ-SOLANA SALCEDO
ISIDRO ALFONSO CARRASCAL VAQUERO
SORAYA DIEGO CAVIA
JUAN ANTONIO POLANCO MADRAZO
HERNÁNDEZ, DAVID
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