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Response of alumina foam to tensile mechanical loading including stress concentrator effect
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SYSNO ASEP 0463931 Document Type C - Proceedings Paper (int. conf.) R&D Document Type Conference Paper Title Response of alumina foam to tensile mechanical loading including stress concentrator effect Author(s) Dlouhý, Ivo (UFM-A) RID, ORCID
Chlup, Zdeněk (UFM-A) RID, ORCID
Hadraba, Hynek (UFM-A) RID, ORCID
Řehořek, L. (CZ)Number of authors 4 Source Title Procedia Materials Science. - Amsterdam : Elsevier, 2016 - ISSN 2211-8128 Pages s. 106-111 Number of pages 6 s. Publication form Online - E Action MDFA 2014 - New Methods of Damage and Failure Analysis of Structural Parts /6./ Event date 08.09.2014-11.09.2014 VEvent location Ostrava Country CZ - Czech Republic Event type WRD Language eng - English Country NL - Netherlands Keywords Tensile Test ; Ceramics Foam ; Open Porosity Subject RIV JH - Ceramics, Fire-Resistant Materials and Glass R&D Projects ED1.1.00/02.0068 GA MŠMT - Ministry of Education, Youth and Sports (MEYS) GA14-11234S GA ČR - Czech Science Foundation (CSF) Institutional support UFM-A - RVO:68081723 UT WOS 000386622900019 DOI 10.1016/j.mspro.2016.03.019 Annotation Tensile test methodology for ceramic foams has been elaborated and test specimens of different dimensions and those containing central sharp notch (simulating a crack) were tested. Tested material was commercially available alumina based ceramic foam commonly used as filters of light metals melts. The foam cell size used within this study was 60 PPI. The main aim of the investigation has been to prove experimentally whether there is any stress concentration effect in the open cell structures. The fracture load (tensile strength) values were analysed and, in particular, the samples containing central sharp notch and comparable unbroken cross-section were compared with the unflawed samples. Specimens with central through thickness sharp notch have shown demonstrably the strength values comparably lower than the strength level of samples having the same cross-sectional area without stress concentrator. The explanation has been seen in stress concentration effect beneath the internal sharp notch root. Workplace Institute of Physics of Materials Contact Yvonna Šrámková, sramkova@ipm.cz, Tel.: 532 290 485 Year of Publishing 2017
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