Strain hardening test: short term test for estimating service life of high-density polyethylene

0567374 - ÚMCH 2023 RIV DE eng C - Conference Paper (international conference)
Kovář, M. - Nezbedová, E. - Hodan, Jiří - Starý, Zdeněk
Strain hardening test: short term test for estimating service life of high-density polyethylene.
Macromolecular Symposia, Volume 403, Issue 1, SI. Weinheim: WILEY-VCH VERLAG, 2022, č. článku 2200056. ISSN 1022-1360. E-ISSN 1521-3900.
[International Scientific Conference on PolyMerTec /4./ - PolyMerTec, Meeting on Deformation and Fracture Behaviour of Polymers /17./. Electr. network (Merseburg) (DE), 09.06.2021-11.06.2021]
Institutional support: RVO:61389013
Keywords : high-density polyethylene * service life * strain hardening test
OECD category: Polymer science
Method of publishing: Limited access
https://onlinelibrary.wiley.com/doi/10.1002/masy.202200056

The strain hardening test (SHT) is based on uniaxial tensile testing to estimate the time to failure. It has been shown that the strain hardening modulus can be easily determined using SHT with testing times only a few hours. Due to the same molecular processes during SHT and conventional methods such as full notch creep test (FNCT) and Pennsylvania edge notch test (PENT), the strain hardening modulus covers the slow crack growth (SCG) resistance in pipe-grade high-density polyethylene (PE-HD) to a high degree. The contribution summarizes the results of SHT, carried out on PE-HD. It discusses the effects of geometry of the test specimens, and the correlation with the PENT and FNCT.

Permanent Link: https://hdl.handle.net/11104/0338635