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National Repository of Grey Literature 2 records found  Search took 0.00 seconds. 
APPLICATION OF SMALL PUNCH TECHNIQUE FOR EVALUATION OF MECHANICAL PROPERTIES OF ADVANCED METALLIC MATERIALS
 Milička, Karel ; Dobeš, Ferdinand
Results of an application of small punch tests on non-steel advanced materials are presented with the aim to show several possibilities of this techique. As representative, three materials were selected: an aluminium alloy 2124Al reinforced with 20 vol.% SiC particulates, a composite of alloy AZ91 with Saffil fibres and an intermetallic alloy based on Fe3Al compound. It is shown that there are some close relationships between the results of the small punch technique and results of creep tests using massive specimens. Advantages of the small punch tests under specific conditions, e.g., if a small amount of testing materials is at disposal, are discussed.
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Hodnocení creepové odolnosti reálných konstrukčních dílů pomocí techniky malých vtisků
 Dobeš, Ferdinand ; Milička, Karel ; Sobotka, J. ; Kuboň, Z.
Local creep properties of power-plant pipeline and its weld after long-term service were studied by means of small punch tests and conventional tensile creep tests. The small punch technique enables the estimation of the dependence of creep properties on the position in the pipe wall. The technique also appears to be useful for a characterization and analysis of creep strength of selected localities in welds.
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