Skip to main content

Advertisement

SpringerLink
Log in

Study of the PENT test conditions for reducing failure times in high-resistance polyethylene resins for pipe applications

  • Published:
Mechanics of Time-Dependent Materials Aims and scope Submit manuscript

Abstract

A thorough study of the physical conditions in the Pennsylvania Edge Notch Tensile (PENT) test, such as stress and temperature, is carried out in order to reduce the long test times observed in new bimodal and multimodal polyethylene grades (third and fourth generation grades) which may withstand hundreds or thousands of hours at the standard conditions (80○C, 2.4 MPa). The results show how on increasing the temperature up to 90○C and the applied stress up to 2.8 MPa, the failure time may be reduced by a factor of 6. Special attention should be paid to the n and Q parameters of the Brown and Lu equation, because variations in those parameters could dramatically change the result of the comparison between different systems depending on the temperature and stress value.

This is a preview of subscription content, log in via an institution to check access.

Access this article

Log in via an institution

Price excludes VAT (USA)
Tax calculation will be finalised during checkout.

Instant access to the full article PDF.

Institutional subscriptions

Similar content being viewed by others

References

  • Brown, N., Bhattacharya, S.K.: The initiation of slow crack growth in linear polyethylene under single edge notch tension and plane strain. J. Mater. Sci. 20, 4553–4560 (1985)

    Article  Google Scholar 

  • Brown, N., Lu, X., Huang, Y.L., Qian, R.: Slow crack growth in polyethylene—a review. Makromol. Chem. 41, 55–67 (1991)

    Article  Google Scholar 

  • Brown, N., Lu, X.: A fundamental theory for slow crack growth in polyethylene. Polymer 36, 543–548 (1995)

    Article  Google Scholar 

  • Brown, N., Zhou, Z.J.: Developing PE100 resins with PAC test. In: Proc. Conf. Plastic Pipes XII, Milan, Italy (2003)

    Google Scholar 

  • Brown, N., Zhou, Z.: Tests for developing gas pipe resins. Plast. Rubber Compos. 34, 289–293 (2005)

    Article  Google Scholar 

  • Brown, N.: Intrinsic lifetime of polyethylene pipelines. Polym. Eng. Sci. 47, 477–480 (2007)

    Article  Google Scholar 

  • Chan, M.K.V., Williams, J.G.: Slow stable crack growth in high density polyethylenes. Polymer 24, 234–244 (1983)

    Article  Google Scholar 

  • Domínguez, C.: Estudio del proceso de crecimiento lento de grieta en el polietileno de alta densidad para su aplicación en tubería. Doctoral Dissertation, Rey Juan Carlos University, Madrid (2009)

  • Dreze, H., Scheelen, A.: Accelerated test methods for stress crack resistance evaluation of polyethylene pipe grades. In: Proc. Conf. Plastic Pipes X, Goteborg, Sweden (1998)

    Google Scholar 

  • Frank, A., Pinter, G., Lang, R.W.: Prediction of the remaining lifetime of polyethylene pipes after up to 30 years in use. Polym. Test. 28, 737–745 (2009)

    Article  Google Scholar 

  • García, R.A., Carrero, A., Aroca, M., Prieto, O., Domínguez, C.: Slow crack growth resistance in resin blends of chromium and metallocene catalyzed ethylene-hexene copolymers for pipe applications. Polym. Eng. Sci. 48, 925–933 (2008)

    Article  Google Scholar 

  • Lu, X., Brown, N.: The transition from ductile to slow crack growth failure in a copolymer of polyethylene. J. Mater. Sci. 25, 411–416 (1990a)

    Article  Google Scholar 

  • Lu, X., Brown, N.: The ductile-brittle transition in a polyethylene copolymer. J. Mater. Sci. 25, 29–34 (1990b)

    Article  Google Scholar 

  • Lu, X., Brown, N.: A test for slow crack growth failure in polyethylene under a constant load. Polym. Test. 11, 309–319 (1992)

    Article  Google Scholar 

  • Lu, X., Brown, N.: Abnormal slow crack growth in polyethylene. Polymer 38, 5749–5753 (1997)

    Article  Google Scholar 

  • Lustiger, A., Markham, R.L.: Importance of tie molecules in preventing polyethylene fracture under long-term loading conditions. Polymer 24, 1647–1653 (1983)

    Article  Google Scholar 

  • Parsons, M., Stepanov, E.V., Hiltner, A., Baer, E.: Correlation of stepwise fatigue and creep slow crack growth in high density polyethylene. J. Mater. Sci. 34, 3315–3326 (1999)

    Article  Google Scholar 

  • Parsons, M., Stepanov, E.V., Hiltner, A., Baer, E.: Correlation of fatigue and creep slow crack growth in a medium density polyethylene pipe material. J. Mater. Sci. 35, 2659–2674 (2000)

    Article  Google Scholar 

  • Pinter, G., Lang, R.W.: Effect of stabilization on creep crack growth in high-density polyethylene. J. Appl. Polym. Sci. 90, 3191–3207 (2003)

    Article  Google Scholar 

Download references

Author information

Authors and Affiliations

  1. LATEP-GIQA, Departamento de Tecnología Química y Ambiental, ESCET, Universidad Rey Juan Carlos, 28933, Madrid, Spain

    Carlos Domínguez, Rafael A. García & Alicia Carrero

  2. Centro de Tecnología REPSOL, Ctra. de Extremadura, Km. 18, 28931, Madrid, Spain

    Marcelo Aroca

Authors
  1. Carlos Domínguez
    View author publications

    You can also search for this author in PubMed Google Scholar

  2. Rafael A. García
    View author publications

    You can also search for this author in PubMed Google Scholar

  3. Marcelo Aroca
    View author publications

    You can also search for this author in PubMed Google Scholar

  4. Alicia Carrero
    View author publications

    You can also search for this author in PubMed Google Scholar

Corresponding author

Correspondence to Carlos Domínguez.

Rights and permissions

Reprints and permissions

About this article

Cite this article

Domínguez, C., García, R.A., Aroca, M. et al. Study of the PENT test conditions for reducing failure times in high-resistance polyethylene resins for pipe applications. Mech Time-Depend Mater 16, 105–115 (2012). https://doi.org/10.1007/s11043-011-9151-z

Download citation

  • Received:

  • Accepted:

  • Published:

  • Issue Date:

  • DOI: https://doi.org/10.1007/s11043-011-9151-z

Keywords

Search

Navigation