Prohlížení ČVUT - elektronické publikace dle autora "Václavek, Lukáš"

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    • BENEFITS OF USE OF ACOUSTIC EMISSION IN SCRATCH TESTING 

      Autor: Václavek, Lukáš; Tomáštík, Jan; Chmelíčková, Hana; Čtvrtlík, Radim
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2020)
      Scratch test is regularly used for assessment of cohesive and adhesive strength of thin films and coatings. By default, its evaluation is based on analysis of depth-load-time record and microscopic observation of residual ...

    • CHARACTERIZATION OF TITANIUM LASER WELDS 

      Autor: Chmelíčková, Hana; Hiklová, Helena; Václavek, Lukáš; Tomáštík, Jan; Čtvrtlík, Radim
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2020)
      Butt welding of commercially pure titanium Grade 1 and Ti6Al4V alloy sheets using a pulsed Nd:YAG laser KLS 246 - 102 LASAG were carried out to determine optimal values of pulse energy and pulse length to create completely ...

    • LASER-INDUCED SURFACE ACOUSTIC WAVES FOR THIN FILM CHARACTERIZATION 

      Autor: Kudělka, Radim; Václavek, Lukáš; Tomáštík, Jan; Malecová, Sabina; Čtvrtlík, Radim
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2020)
      Knowledge of mechanical properties of thin films is essential for most of their applications. However, their determination can be problematic for very thin films. LAW (Laser-induced acoustic waves) is a combined acousto-optic ...

    • WHY MONITOR ACOUSTIC EMISSIONS DURING NANOMECHANICAL TESTS? 

      Autor: Čtvrtlík, Radim; Václavek, Lukáš; Tomáštík, Jan
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2020)
      Acoustic Emissions (AE) monitoring has been proved as an effective non-destructive technique at the macro scale. Nevertheless, it may also be employed at nano/micro scale during nanomechanical and nanotribological testing. ...