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Correlation of the cyclic cracked round bar test and hydrostatic pressure test for unplasticized polyvinylchloride
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SYSNO ASEP 0540245 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Correlation of the cyclic cracked round bar test and hydrostatic pressure test for unplasticized polyvinylchloride Author(s) Frank, A. (AT)
Messiha, M. (AT)
Koch, T. (AT)
Poduška, Jan (UFM-A) ORCID
Hutař, Pavel (UFM-A) RID, ORCID
Arbeiter, F. (AT)
Pinter, G. (AT)Number of authors 7 Article number 107125 Source Title Polymer Testing. - : Elsevier - ISSN 0142-9418
Roč. 95, MAR (2021)Number of pages 7 s. Language eng - English Country GB - United Kingdom Keywords Slow crack growth ; Fracture mechanisms ; Stress intensity factor ; PVC-U ; Pipe ; Material ranking Subject RIV JL - Materials Fatigue, Friction Mechanics OECD category Audio engineering, reliability analysis Method of publishing Open access Institutional support UFM-A - RVO:68081723 UT WOS 000663790000010 EID SCOPUS 85101319425 DOI 10.1016/j.polymertesting.2021.107125 Annotation The applicability of the cracked round bar (CRB) test according ISO 18489 for the characterization of slow crack growth (SCG) in unplasticized polyvinylchloride (PVC–U) was analyzed by testing three PVC-U pipe compounds with different molecular mass, represented by different intrinsic viscosity numbers (K-values). The tests were conducted at lower stress loading ranges than recommended by the standard. The SCG resistance showed a clear dependency on the K-value resulting in a higher crack resistance with increasing K-value. Moreover, the results of the CRB tests were correlated to hydrostatic pressure tests of PVC-U pipe grades with different K-values. A clear linear correlation between the results of both methods was established, thereby demonstrating a significant acceleration of testing times with the CRB test. With a special focus on EN 1401–1, it was elaborated that the requested minimum failure resistance of 1′000 h in the hydrostatic pressure test at T = 60 °C correlates to 97′000 cycles, or 2.7 h, respectively, in the CRB test at T = 23 °C. Workplace Institute of Physics of Materials Contact Yvonna Šrámková, sramkova@ipm.cz, Tel.: 532 290 485 Year of Publishing 2022 Electronic address https://www.sciencedirect.com/science/article/pii/S0142941821000751?via%3Dihub
Number of the records: 1