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Main Title Ductile-to-Brittle Transition Time in Polyethylene Geomembrane Sheet.
Author Halse, Y. H. ; Lord, A. E. ; Koerner, R. M. ;
CORP Author Drexel Univ., Philadelphia, PA. Geosynthetic Research Inst.;Environmental Protection Agency, Cincinnati, OH. Risk Reduction Engineering Lab.
Publisher 1992
Year Published 1992
Report Number EPA-R-815692; EPA/600/A-92/049;
Stock Number PB92-153758
Additional Subjects Polyethylene ; Geotechnical fabrics ; Membranes ; Cracking(Fracturing) ; Mechanical tests ; Ductility ; Failure ; Fatigue(Materials) ; Loads(Forces) ; Deformation ; Yield strength ; Mechanical properties ; Crack propagation ; Brittleness ; Reprints ;
Library Call Number Additional Info Location Last
NTIS  PB92-153758 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation 10p
The susceptibility of polyehtylene (PE) geomembranes to stress cracking was evaluated in the laboratory using an accelerated notched constant load testing (NCLT) method. The test specimens were subjected to various stress levels which ranged from 25% to 70% of the yield stress at 50C. The ductile-to-brittle failure curves of five different geomembranes were obtained by plotting the logarithm of percent yield stress against the logarithm of average failure time. The stress cracking resistance (SCR) is quantified as the value of the ductile-to-brittle transition time. The results show that SCR of these geomembrane sheets vary over a wide range from a minimum of 4 hours to over 600 hours.