Accelerated Tests for Lifetime Prediction of PE-HD Pipe Grades
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In: Macromolecular Symposia, Vol. 373.2017, No. 1, 1600096, 22.06.2017.
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TY - JOUR
T1 - Accelerated Tests for Lifetime Prediction of PE-HD Pipe Grades
AU - Nezbedová, Eva
AU - Pinter, Gerald Gerhard
AU - Frank, Andreas
AU - Hutař, Pavel
AU - Poduška, Jan
AU - Hodan, Jiří
PY - 2017/6/22
Y1 - 2017/6/22
N2 - 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.
AB - 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.
KW - accelerated tests
KW - lifetime prediction
KW - PE-HD
KW - plastic pipes
U2 - 10.1002/masy.201600096
DO - 10.1002/masy.201600096
M3 - Article
VL - 373.2017
JO - Macromolecular Symposia
JF - Macromolecular Symposia
SN - 1022-1360
IS - 1
M1 - 1600096
ER -