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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. Detailed record
	Lomové chování kompozitů s křehkou matricí vyztuženou vlákny Chlup, Zdeněk ; Dlouhý, Ivo ; Boccaccini, A. R. ; Chawla, K. K. A number of examples exist that indicate the potential for increasing the fracture resistance of brittle matrix by dispersing brittle fibres. For applications development the real composite constituents response during mechanical loading under presence of flaws appears to be important. Theoretical and experimental knowledge sampled on glass matrix composites reinforced by fibres is shortly summarised in the paper. Borosilicate glass with continuous Nicalon fibres and the same matrix containing the chopped carbon fibres as well as the ZrO2 particles (hybrid composite) have been in focus of interests. Chevron notch technique was mainly used for the fracture toughness evaluation. High fracture toughness level of both composites has been proved when testing the as received state. Damage introduced by thermal ageing and/or thermal cycling has been discussed based on fracture toughness values and fracture behaviour analyses Detailed record
	Přenositelnost lomové houževnatosti z malých těles na tělesa standardních rozměrů Dlouhý, Ivo ; Chlup, Zdeněk ; Kozák, Vladislav The capability of pre-cracked Charpy type specimens for prediction of fracture toughness characteristics for standard (1T) bend specimens has been analysed. The toughness scaling model and the master curve methodology have been combined for these purposes. Cast low-carbon manganese steel cut from midthickness of thick plate was used as an experimental material being tested as a candidate material for container casks of spent nuclear fuel. The Dodds-Anderson toughness scaling model was applied for toughness data correction from small scale pre-cracked Charpy specimens. This approach was combined with master curve methodology for the fracture toughness - temperature diagram and loading rate effects predictions supplying good correlation of predicted data with real behaviour Detailed record

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