Mechanisms of rapid fracture in PA12 grades
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In: Theoretical and Applied Fracture Mechanics, Vol. 117.2022, No. February, 103145, 02.2022.
Research output: Contribution to journal › Article › Research › peer-review
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TY - JOUR
T1 - Mechanisms of rapid fracture in PA12 grades
AU - Messiha, Mario
AU - Frank, Andreas
AU - Heimink, Jan
AU - Arbeiter, Florian
AU - Pinter, Gerald
N1 - Funding Information: The research work of this paper was performed at the Polymer Competence Center Leoben GmbH (PCCL, Austria) within the framework of the COMET-program (Grant Nr.: 879785), which is funded by the Federal Ministry for Transport, Innovation and Technology (Austria) and Federal Ministry for Economy, Family and Youth (Austria) with contributions by Evonik Operations GmbH (Germany) and the Montanuniversitaet Leoben (Austria). The PCCL is funded by the Austrian Government and the State Governments of Styria and Upper Austria. Special thanks go to Jutta Geier for a thorough fractographic analysis via SEM. Publisher Copyright: © 2021
PY - 2022/2
Y1 - 2022/2
N2 - Evidence is presented for an adiabatic decohesion mechanism of Rapid Crack Propagation (RCP) in polyamide (PA) 12. RCP was induced in pipe specimens using the Small–Scale Steady–State (S4) test. Fractography revealed a surface of “flakes” attached to the bulk through highly fibrillated regions. A temperature rise recorded ahead of the propagating crack tip in combination with the observed fracture appearance indicates a thermally activated disentanglement fracture mechanism for PA12 pipe grades. Using mathematical formulations of the adiabatic decohesion model proposed by Leevers, strong correlation was found between S4 test results and a newly defined analytical ranking parameter R**.
AB - Evidence is presented for an adiabatic decohesion mechanism of Rapid Crack Propagation (RCP) in polyamide (PA) 12. RCP was induced in pipe specimens using the Small–Scale Steady–State (S4) test. Fractography revealed a surface of “flakes” attached to the bulk through highly fibrillated regions. A temperature rise recorded ahead of the propagating crack tip in combination with the observed fracture appearance indicates a thermally activated disentanglement fracture mechanism for PA12 pipe grades. Using mathematical formulations of the adiabatic decohesion model proposed by Leevers, strong correlation was found between S4 test results and a newly defined analytical ranking parameter R**.
KW - Adiabatic decohesion
KW - Dynamic fracture
KW - Fracture mechanics
KW - Rapid crack propagation
KW - Time–dependent material behavior
UR - http://www.scopus.com/inward/record.url?scp=85121113530&partnerID=8YFLogxK
U2 - 10.1016/j.tafmec.2021.103145
DO - 10.1016/j.tafmec.2021.103145
M3 - Article
AN - SCOPUS:85121113530
VL - 117.2022
JO - Theoretical and Applied Fracture Mechanics
JF - Theoretical and Applied Fracture Mechanics
SN - 0167-8442
IS - February
M1 - 103145
ER -
