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Original title:
Determination of mechanical properties of light alloys and composites by means of Small Punch Testing
Authors: Bártková, Denisa ; Langer, J. ; Dymáček, Petr ; Válka, L.
Document type: Papers
Conference/Event: Multi-level Design of Advanced Materials, Velké Bílovice (CZ), 2015-05-28 / 2015-05-29
Year: 2015
Language: eng
Abstract: Nowadays, in many testing areas a volume of experimental material is limited (laboratory-scaled volume, semidestructive approach). Therefore many testing techniques on miniature samples were devised. Principle of Small Punch Test (SPT) method is a penetration of small puncher through thin disc placed on a ring until the disc bursts. In dependence on loading mode it can provide information comparable to uniaxial tensile tests (UTT) and/or conventional constant load creep tests. However clarification of relations between SPT and conventional methods is difficult and empirical formulas are non-universal. The aim of this study is to i) evaluate mechanical properties of aluminium and magnesium alloys and its composites by means of SPT, ii) compare SPT results with UTT, iii) validate correlation formulas from literature, iv) propose more advanced approach to define correlation between UTT and SPT. Measurement were carried out at constant deflection rate (SPT-CDR) in two different laboratoires. Results from both laboratories were compared to evaluate the reproducibility of the method. Better results agreement was reached for the ultimate strength measurements. Yield strength results exhibited greater variance. An influence of pre-deformation of the sample on yield strength and deflection at maximum force was also identified. We can conclude, that for quantitative estimation of strength parameters we can use correlation formulas based on materials with similar composition and fracture behaviour.
Keywords: Aluminium Alloys Thin Disc; Magnesium Alloys; Small Punch Test
Project no.: EE2.3.20.0197
Funding provider: GA MŠk
Host item entry: Multi-level Design of Advanced Materials, ISBN 978-80-214-5146-9
Institution: Institute of Physics of Materials AS ČR (web)
Document availability information: Fulltext is available at the institute of the Academy of Sciences.
Original record: http://hdl.handle.net/11104/0252731
Permalink: http://www.nusl.cz/ntk/nusl-201144
The record appears in these collections:
Research > Institutes ASCR > Institute of Physics of Materials
Conference materials > Papers
Authors: Bártková, Denisa ; Langer, J. ; Dymáček, Petr ; Válka, L.
Document type: Papers
Conference/Event: Multi-level Design of Advanced Materials, Velké Bílovice (CZ), 2015-05-28 / 2015-05-29
Year: 2015
Language: eng
Abstract: Nowadays, in many testing areas a volume of experimental material is limited (laboratory-scaled volume, semidestructive approach). Therefore many testing techniques on miniature samples were devised. Principle of Small Punch Test (SPT) method is a penetration of small puncher through thin disc placed on a ring until the disc bursts. In dependence on loading mode it can provide information comparable to uniaxial tensile tests (UTT) and/or conventional constant load creep tests. However clarification of relations between SPT and conventional methods is difficult and empirical formulas are non-universal. The aim of this study is to i) evaluate mechanical properties of aluminium and magnesium alloys and its composites by means of SPT, ii) compare SPT results with UTT, iii) validate correlation formulas from literature, iv) propose more advanced approach to define correlation between UTT and SPT. Measurement were carried out at constant deflection rate (SPT-CDR) in two different laboratoires. Results from both laboratories were compared to evaluate the reproducibility of the method. Better results agreement was reached for the ultimate strength measurements. Yield strength results exhibited greater variance. An influence of pre-deformation of the sample on yield strength and deflection at maximum force was also identified. We can conclude, that for quantitative estimation of strength parameters we can use correlation formulas based on materials with similar composition and fracture behaviour.
Keywords: Aluminium Alloys Thin Disc; Magnesium Alloys; Small Punch Test
Project no.: EE2.3.20.0197
Funding provider: GA MŠk
Host item entry: Multi-level Design of Advanced Materials, ISBN 978-80-214-5146-9
Institution: Institute of Physics of Materials AS ČR (web)
Document availability information: Fulltext is available at the institute of the Academy of Sciences.
Original record: http://hdl.handle.net/11104/0252731
Permalink: http://www.nusl.cz/ntk/nusl-201144
The record appears in these collections:
Research > Institutes ASCR > Institute of Physics of Materials
Conference materials > Papers
Record created 2015-12-04, last modified 2021-11-24