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Mechanics of Time-Dependent Materials

, Volume 18, Issue 4, pp 663–684 | Cite as

Investigation of the dynamic mechanical behavior of polyetheretherketone (PEEK) in the high stress tensile regime

  • M. BererEmail author
  • Z. Major
  • G. Pinter
  • D. M. Constantinescu
  • L. Marsavina
Article

Abstract

Due to its outstanding mechanical performance both in static and dynamic loading and its resistance up to very high temperatures, Polyetheretherketone (PEEK) has attracted many practical applications. The loaded contact state for the application of PEEK rolls as bearing elements was recently analyzed by the corresponding author. High irreversible deformations on the mantle side were caused by the rolling contact and thus the rolling performance is supposed to be strongly affected by the dynamic mechanical properties of this irreversibly deformed material. Tensile fatigue tests at various stress levels up to the thermally dominated fatigue regime were conducted in order to get information regarding the dynamic mechanical material behavior at high stress regimes. Two types of PEEK (annealed and untreated) were investigated and two load ratios, R, were used (0.1 and 0.5). During the fatigue tests extensometer strain, load and surface temperature were recorded and a quantitative hysteresis loop analysis with calculated secant modulus and dynamic modulus was performed. Furthermore, the concept of isocyclic stress–strain diagrams was applied to enlarge and confirm the results obtained from the hysteresis loop analysis. A sharp transition between thermally dominated and mechanically dominated fatigue regimes was found for both PEEK types (annealed and untreated) and for both load ratios. Moreover, the annealed PEEK was stiffer in the tensile fatigue tests than the untreated material. Both examined PEEK types showed distinct hardening throughout the fatigue tests which made them “more elastic” (higher stiffness and less damping).

Keywords

Polyetheretherketone (PEEK) Fatigue Isocyclic stress–strain diagrams Hysteresis curves Hysteretic heating 

Notes

Acknowledgements

The research work of this paper was performed at the Polymer Competence Center Leoben GmbH (PCCL, Austria) within the framework of the COMET-programme of the Austrian Ministry of Traffic, Innovation and Technology with contributions by the Montanuniversitaet Leoben (Chair of Materials Science and Testing of Plastics). The PCCL is funded by the Austrian Government and the State Governments of Styria and Upper Austria.

References

  1. Berer, M., Major, Z.: Characterization of the global deformation behaviour of engineering plastics rolls. Int. J. Mech. Mater. Des. 6, 1–9 (2010) CrossRefGoogle Scholar
  2. Berer, M., Major, Z.: Characterisation of the local deformation behaviour of engineering plastics rolls. Strain 48, 225–234 (2012) CrossRefGoogle Scholar
  3. Berer, M., Major, Z., Pinter, G.: Elevated pitting wear of injection molded polyetheretherketone (PEEK) rolls. Wear 297, 1052–1063 (2013) CrossRefGoogle Scholar
  4. Blundell, D., Osborn, B.: The morphology of poly(aryl-ether-ether-ketone). Polymer 24, 953–958 (1983) CrossRefGoogle Scholar
  5. Cebe, P.: Annealing study of poly(etheretherketone). J. Mater. Sci. 23, 3721–3731 (1988) CrossRefGoogle Scholar
  6. Cebe, P., Chung, S.Y., Hong, S.-D.: Effect of thermal history on mechanical properties of polyetheretherketone below the glass transition temperature. J. Appl. Polym. Sci. 33, 487–503 (1987) CrossRefGoogle Scholar
  7. Domininghaus, H., Elsner, P., Eyerer, P., Hirth, T.: Kunststoffe: Eigenschaften und Anwendungen, 7th edn. Springer, Berlin (2008) (in German) CrossRefGoogle Scholar
  8. Ferry, J.D.: Viscoelastic Properties of Polymers, 3rd edn. Wiley, New York (1980) Google Scholar
  9. Hertzberg, R.W., Manson, J.A.: Fatigue of Engineering Plastics. Academic Press, New York (1980) Google Scholar
  10. Heym, B., Beitz, W.: Zur Belastbarkeit von Stirnzahnrädern aus dem Hochtemperatur-Thermoplast PEEK. Konstruktion 47, 351–357 (1995) (in German) Google Scholar
  11. Jones, D.P., Leach, D.C., Moore, D.R.: Mechanical properties of poly(ether-ether-ketone) for engineering applications. Polymer 26, 1385–1393 (1985) CrossRefGoogle Scholar
  12. Karger-Kocsis, J., Friedrich, K.: Temperature and strain-rate effects on the fracture toughness of poly(ether ether ketone) and its short glass-fibre reinforced composite. Polymer 27, 1753–1760 (1986) CrossRefGoogle Scholar
  13. Karger-Kocsis, J., Walter, R., Friedrich, K.: Annealing effects on the fatigue crack propagation of injection moulded PEEK and its short-fibre composites. J. Polym. Eng. 8, 221–255 (1988) CrossRefGoogle Scholar
  14. Lee, L.H., Vanselow, J.J., Schneider, N.S.: Effects of mechanical drawing on the structure and properties of peek. Polym. Eng. Sci. 28, 181–187 (1988) CrossRefGoogle Scholar
  15. Lesser, A.J.: Changes in mechanical behavior during fatigue of semicrystalline thermoplastics. J. Appl. Polym. Sci. 58, 869–879 (1995) CrossRefGoogle Scholar
  16. Lesser, A.J.: Effective volume changes during fatigue and fracture of polyacetal. Polym. Eng. Sci. 36, 2366–2374 (1996) CrossRefGoogle Scholar
  17. Lovinger, A.J., Davis, D.D.: Electron-microscopic investigation of the morphology of a melt-crystallized polyaryletherketone. J. Appl. Phys. 58, 2843 (1985) CrossRefGoogle Scholar
  18. Nisitani, H., Noguchi, H., Kim, Y.-H.: Evaluation of fatigue strength of plain and notched specimens of short carbon-fiber reinforced polyetheretherketone in comparison with polyetheretherketone. Eng. Fract. Mech. 43, 685–705 (1992) CrossRefGoogle Scholar
  19. Ostberg, G.M.K., Seferis, J.C.: Annealing effects on the crystallinity of polyetheretherketone (PEEK) and its carbon fiber composite. J. Appl. Polym. Sci. 33, 29–39 (1987) CrossRefGoogle Scholar
  20. Pinter, G., Ladstätter, E., Billinger, W., Lang, R.W.: Characterisation of the tensile fatigue behaviour of RTM-laminates by isocyclic stress–strain diagrams. Int. J. Fatigue 28, 1277–1283 (2006) CrossRefzbMATHGoogle Scholar
  21. Rae, P., Brown, E., Orler, E.: The mechanical properties of poly(ether-ether-ketone) (PEEK) with emphasis on the large compressive strain response. Polymer 48, 598–615 (2007) CrossRefGoogle Scholar
  22. Ramkumar, A., Gnanamoorthy, R.: Axial fatigue behaviour of polyamide-6 and polyamide-6 nanocomposites at room temperature. Compos. Sci. Technol. 68, 3401–3405 (2008) CrossRefGoogle Scholar
  23. Rösler, J.: Zur Tragfähigkeitssteigerung thermoplastischer Zahnräder mit Füllstoffen. Dissertation, Fakultät V. Technische Universität, Berlin, Germany (2005) (in German) Google Scholar
  24. Saib, K., Evans, W., Isaac, D.: The role of microstructure during fatigue crack growth in poly(aryl ether ether ketone) (PEEK). Polymer 34, 3198–3203 (1993) CrossRefGoogle Scholar
  25. Sobieraj, M.C., Murphy, J.E., Brinkman, J.G., Kurtz, S.M., Rimnac, C.M.: Notched fatigue behavior of PEEK. Biomaterials 31, 9156–9162 (2010) CrossRefGoogle Scholar
  26. Zahnt, B.-A.: Ermüdungsverhalten von Diskontinuierlich Glasfaserverstärkten Kunststoffen—Charakterisierungsmethoden, Werkstoffgesetze und Struktur-Eigenschafts-Beziehungen. Dissertation, Materials Science and Testing of Polymers, Montanuniversität Leoben, Austria (2003) (in German) Google Scholar

Copyright information

© Springer Science+Business Media Dordrecht 2013

Authors and Affiliations

  • M. Berer
    • 1
    Email author
  • Z. Major
    • 2
  • G. Pinter
    • 3
  • D. M. Constantinescu
    • 4
  • L. Marsavina
    • 5
  1. 1.Polymer Competence Center Leoben GmbHLeobenAustria
  2. 2.Institute for Polymer Product EngineeringJohannes Kepler University of LinzLinzAustria
  3. 3.Materials Science and Testing of PolymersMontanuniversität LeobenLeobenAustria
  4. 4.Department of Strength of MaterialsUniversity POLITEHNICA of BucharestBucharestRomania
  5. 5.Faculty of Mechanical EngineeringPOLITEHNICA University of TimisoaraTimisoaraRomania

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