20.500.12556/RUL-136307 Vgradnja digitalnega merilnega sistema na merilnik udarne žilavosti Installation of a digital measurement system on the Charpy measurement device V sklopu diplomskega dela se ukvarjamo s Charpyjevim preizkusom, ki je poglavitni preizkus za določanje udarne žilavosti materialov. Pri tem preizkusu kladivo zaniha iz poznane višine, prelomi preizkušanec in zaniha do višine, ki je nižja od začetne. Razlika med začetno in končno višino predstavlja udarno žilavost materiala, ki ga preizkušamo. Naša glavna naloga je vgradnja obstoječega digitalnega merilnega sistema na Charpyjev merilnik z analognim merilnim sistemom. Rezultate meritev digitalnega merilnega sistema smo primerjali z rezultati analognega merilnega sistema in ugotovili vpliv vgrajenega inkrementalnega dajalnika zasuka na rezultate meritev. Ugotovili smo, da digitalni merilni sistem poda meritve z boljšo ločljivostjo in ponovljivostjo, vendar moramo pred začetkom merjenja zanj izvesti kalibracijo. Poleg glavne naloge smo preučili možnost merjenja pojemka kladiva preizkuševališča med lomom preizkušanca. Ugotovili smo, da dajalnik zasuka nima dovolj visoke frekvence vzorčenja za merjenje pojemka. As part of our work, we deal with the Charpy test, which is the main test for determining the notch toughness of materials. In this test, the hammer swings from a known height, breaks the test piece and swings to a height lower than the initial one. The difference between the initial and final height represents the notch toughness of the material being tested. Our main task is to install the already existing digital measuring system to the Charpy test facility that has an analog measuring system. We compared the results from the digital measuring system with the results from the analog measuring system and determined the effect of the connection on the results. We found out that the digital measuring system gives result with better resolution and repeatability, however we must calibrate it before measuring. In addition to the main task, we examined the possibility of measuring the deceleration of the test hammer during the fracture of the test piece. We found that the rotation sensor does not have a high enough sampling frequency to measure deceleration. charpyjev preizkus udarna žilavost pojemek vgradnja merilnega sistema dajalnik zasuka merilna tehnika charpy impact test notch toughness deceleration installation of measuring system encoder measuring technique true false false [N. Matoh] Slovenski jezik Angleški jezik Zaključna naloga 2022-04-23 08:30:37 2022-04-23 08:30:42 2023-11-17 12:59:03 0000-00-00 00:00:00 2022 0 Ljubljana 0 XV, 36 f. 0000-00-00 NiDoloceno NiDoloceno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 620.179.12:681.5(043.2) 238069 105897987 14040.pdf 14040.pdf 1 3FD322155B62AA49D210B63DE47B60BD 43c78fdbc774eeb35830c4b255b0956c53a2de67a2a8ab651fb9381d14fa1d6b d4d36aab-c2ce-11ec-8aca-00155dcfd717 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=155875 14033.png 14033.png 1 A9263449372279CBCA18CD572D51EC32 0df17cf2e6ce3dc2d918388a10a1aa6c79071fd02e94023f7bff32f17d3905e2 d4d6e090-c2ce-11ec-8aca-00155dcfd717 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=155876 14041.png 14041.png 1 A9263449372279CBCA18CD572D51EC32 0df17cf2e6ce3dc2d918388a10a1aa6c79071fd02e94023f7bff32f17d3905e2 d4d7101b-c2ce-11ec-8aca-00155dcfd717 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=155877 14042.png 14042.png 1 A9263449372279CBCA18CD572D51EC32 0df17cf2e6ce3dc2d918388a10a1aa6c79071fd02e94023f7bff32f17d3905e2 d4d739dd-c2ce-11ec-8aca-00155dcfd717 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=155878 Fakulteta za strojništvo 0 0 0