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Mechanical Behavior of LDPE/MWCNT Composites After Fatigue and Cryogenic Treatment

[+] Author Affiliations
Catalin Fetecau, Felicia Stan, Petru Timotin, Nicoleta V. Stanciu, Razvan T. Rosculet

Dunarea de Jos University of Galati, Galati, Romania

Paper No. MSEC2018-6532, pp. V002T04A014; 9 pages
doi:10.1115/MSEC2018-6532
From:
  • ASME 2018 13th International Manufacturing Science and Engineering Conference
  • Volume 2: Materials; Joint MSEC-NAMRC-Manufacturing USA
  • College Station, Texas, USA, June 18–22, 2018
  • Conference Sponsors: Manufacturing Engineering Division
  • ISBN: 978-0-7918-5136-4
  • Copyright © 2018 by ASME

abstract

In this study, the effects of fatigue and cryogenic treatments on the mechanical behavior of low-density polyethylene/ multi-walled carbon nanotube (LDPE/MWCNT) composites have been investigated. Injection-molded samples of LDPE/MWCNT composite with different MWCNT weight fractions (0.1–5.0 wt.%) were subjected to cryogenic and fatigue treatments under different testing conditions, and the residual-mechanical properties were investigated. To monitor the fatigue damage, additionally, the electrical conductivity was measured. The results show that the LDPE/MWCNT composites retained good residual-mechanical properties after fatigue (more than 85% of its initial Young modulus) and cryogenic (more than 75% of its initial tensile strength and Young’s modulus) treatment. For the LDPE/MWCNT composites, the electrically conductive nanotube network can be efficiently maintained up to 25 000 fatigue cycles.

Copyright © 2018 by ASME

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