Open AccessBehavior of high-density polyethylene at high strain rates
Author(s) -
Ján Trnka,
E. Nezbedová,
Jan Kober,
J. Buchar
Publication year - 2021
Publication title -
applied and computational mechanics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.129
H-Index - 4
eISSN - 2336-1182
pISSN - 1802-680X
DOI - 10.24132/acm.2021.680
Subject(s) - split hopkinson pressure bar , materials science , viscoelasticity , strain (injury) , composite material , polymer , strain rate , frequency domain , bar (unit) , mathematics , physics , meteorology , medicine , mathematical analysis
The Hopkinson split pressure bar (HSPB) was used for the testing of three polymers at strain rates between 102 to 103 s-1. Higher strain rates were achieved using the direct Hopkinson test. Experimental data were evaluated in time as well as in the frequency domain. A more detailed analysis in the frequency domain showed that the description of tested polymers can be described in the framework of the linear viscoelasticity. The use of the direct Hopkinson test showed the occurrence of a permanent strain.