Fracture and Structural Integrity e-ISSN 1971-8993 Open access
SI: Crack Paths Vol. 13, No. 47 (2019)

Assessment of tensile and fatigue behavior of PEEK in a physiologically relevant environment

Author and affiliation details
  • Mirco Peron Corresponding author NTNU mirco.peron@ntnu.no
  • Jan Torgersen
  • Filippo Berto
DOI
10.3221/IGF-ESIS.47.33
Pages
425-436
Published
Published inVol. 13, No. 47 (2019)Go to the issue

Abstract

In the last decades the necessity of implant devices is continuously increasing. The researchers have thus focused their attentions on the development of new biocompatible materials, in particular polymers. Among them, polyetheretherketone (PEEK) has gained wide interest in load-bearing applications such as spinal cages due to its yielding behavior and its superior corrosion resistance. Since such applications are characterized by notches and other stress concentrators weakening the implant resistance, a design tool for assessing their tensile and fatigue behavior in the presence of such discontinuities is highly claimed. To this aim, tensile and fatigue data available in literature of neat and differently notched PEEK samples (circumferentially cracked and U-notched specimens with different notch radii) experimentally tested in a phosphate-buffered saline (PBS) at 37 °C have been analyzed using the strain energy density (SED) approach. The method is shown to provide accurate results regardless of the different notch geometries, both for tensile and fatigue data. Concerning the former, the tensile strength was in fact estimated with an error lower than ±10%, regardless of the strain rate, while for the latter the SED approach was able to summarize the fatigue data with a single narrow scatter band independently from the notch geometry

Keywords

Article history

  1. ReceivedUntil the next stage: 6 days
  2. Revision requestedUntil the next stage: 2 days
  3. RevisedUntil the next stage: 1 day
  4. AcceptedUntil the next stage: 7 days
  5. Published

How to cite

APA

Peron, M., Torgersen, J., & Berto, F. (2018). Assessment of tensile and fatigue behavior of PEEK in a physiologically relevant environment. Fracture and Structural Integrity, 13(47), 425–436. https://doi.org/10.3221/IGF-ESIS.47.33

IEEE

M. Peron, J. Torgersen, and F. Berto, “Assessment of tensile and fatigue behavior of PEEK in a physiologically relevant environment,” Fracture and Structural Integrity, vol. 13, no. 47, pp. 425–436, 2018, doi: 10.3221/IGF-ESIS.47.33.

MLA

Peron, Mirco, et al. “Assessment of tensile and fatigue behavior of PEEK in a physiologically relevant environment.” Fracture and Structural Integrity, vol. 13, no. 47, 2018, pp. 425–436. https://doi.org/10.3221/IGF-ESIS.47.33.

Chicago

Peron, Mirco, Jan Torgersen, and Filippo Berto. 2018. “Assessment of tensile and fatigue behavior of PEEK in a physiologically relevant environment.” Fracture and Structural Integrity 13 (47): 425–436. https://doi.org/10.3221/IGF-ESIS.47.33.

Harvard

Peron, M., Torgersen, J. and Berto, F. (2018) ‘Assessment of tensile and fatigue behavior of PEEK in a physiologically relevant environment’, Fracture and Structural Integrity, 13(47), pp. 425–436. doi: 10.3221/IGF-ESIS.47.33.

Vancouver

Peron M, Torgersen J, Berto F. Assessment of tensile and fatigue behavior of PEEK in a physiologically relevant environment. Fracture and Structural Integrity. 2018;13(47):425-436. doi:10.3221/IGF-ESIS.47.33

BibTeX

@article{peron2018, author = {Peron, Mirco and Torgersen, Jan and Berto, Filippo}, title = {Assessment of tensile and fatigue behavior of PEEK in a physiologically relevant environment}, journal = {Fracture and Structural Integrity}, year = {2018}, volume = {13}, number = {47}, pages = {425--436}, doi = {10.3221/IGF-ESIS.47.33}, url = {https://doi.org/10.3221/IGF-ESIS.47.33}, issn = {1971-8993} }

RIS

TY - JOUR AU - Peron, Mirco AU - Torgersen, Jan AU - Berto, Filippo TI - Assessment of tensile and fatigue behavior of PEEK in a physiologically relevant environment JO - Fracture and Structural Integrity T2 - Fracture and Structural Integrity PY - 2018 DA - 2018/12/05 VL - 13 IS - 47 SP - 425 EP - 436 DO - 10.3221/IGF-ESIS.47.33 UR - https://doi.org/10.3221/IGF-ESIS.47.33 SN - 1971-8993 ER -

Licence

Copyright © 2019 Mirco Peron, Jan Torgersen, Filippo Berto.

Copyright 
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