Fatigue behavior enhancement of short fiber glass reinforced polyamide by adding phase change materials. (15th May 2016)

• Record Type: Journal Article
• Authors: Casado, J.A.; Gutiérrez-Solana, F.; Carrascal, I.; Diego, S.; Polanco, J.A.; Hernández, D.
• Is Part Of: Composites. Volume 93(2016)
• Page Start: 115
• Page End: 122
• Publication Date: 2016-05-15
• Subjects: A. Polymer-matrix composites (PMCs) -- B. Fatigue -- C. Damage mechanics -- D. Thermal analysis; Composite materials -- Periodicals; Materials science -- Periodicals; Composite materials; Periodicals; Electronic journals; 620.118
• DOI: 10.1016/j.compositesb.2016.02.059
• Languages: English
• ISSNs: 1359-8368

Abstract

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, Na2 S2 O3 ·5H2 O, which acts as a PCM, increases by a surprising 400% with respect to the reference pieces without PCM.