Accelerated Tests for Lifetime Prediction of PE-HD Pipe Grades

Publikationen: Beitrag in FachzeitschriftArtikelForschung(peer-reviewed)

Autoren

  • Eva Nezbedová
  • Andreas Frank
  • Pavel Hutař
  • Jan Poduška
  • Jiří Hodan

Externe Organisationseinheiten

  • Polymer Competence Center Leoben GmbH
  • Czech Academy of Sciences, Brno
  • UNIPETROL RPA, s.r.o. Polymer Institute Brno
  • Czech Academy of Sciences, Praha

Abstract

Pipe failure in long-term applications is characterized by creep crack initiation and creep crack growth. Both can be determined by fracture mechanics based tests of the pipe materials. Nowadays, several accelerated tests are available: PENT (Pennsylvania Edge Notch Tensile test), FNCT (Full Notch Creep Tensile test), CRB (Cracked Round Bar test) or SHT (Strain Hardening Test) and NCBT (Notched Cylindrical Bars Test). The PENT, CRB and SHT were applied to one unimodal polyethylene (PE 80), four bimodal polyethylene (three of PE 100 and one of PE 100-RC) and one PE-BF (for blow molding). The contribution is focused mainly on two topics: (i) difference in specimen's preparation and test conditions and (ii) comparison of the experimental results obtained using different accelerated tests.

Details

OriginalspracheEnglisch
Aufsatznummer1600096
Seitenumfang8
FachzeitschriftMacromolecular Symposia
Jahrgang373.2017
Ausgabenummer1
DOIs
StatusVeröffentlicht - 22 Juni 2017