20.500.12556/RUL-31946 Application of an instrumented tracer in an abrasion mill for rock abrasion studies Študija obrusa kamnin v abrazijskem mlinu z uporabo opremljenega sledila One of research fields in studying dynamics of gravel-bed rivers is the interaction between sediment particles in motion and incision rates in rock-bottom river reaches. This natural phenomenon of rock abrasion was studied in a laboratory in a Dubree-type abrasion (tumbling) mill with the diameter of 711 mm, using different mixtures of fluvial sediments as abrasive media. A set of rock plates of different lithologies was fixed to the inside mill wall to evaluate rock abrasion by moving sediment particles. The dynamicsof the abrasion process of the rock plates was studied by a spherical instrumented tracer with the diameter of 99 mm. This paper describes our solution to the problem of recognizing and differentiating between impacts of the instrumented tracer with different bodies: sediment particles, rock plates, soft lining of the mill and steel side plates of the mill. For this purpose, the signal analysis of measured 3D accelerations of the instrumented tracer gave sufficient information to recognize the tribological surrounding and sufficiently describe the intensity of the abrasion process (number and amplitudes of contact forces). An effective and computationally inexpensive algorithm for automatic impact recognition and evaluation was developed, basedon time domain analysis. Furthermore, the frequency domain analysis gave a method of discriminating different signals. Both mentioned methods allow us to classify all recorded signals into groups based on similarity of measurement conditions. laboratory experiments tribology rock abrasion instrumented tracers laboratorijski poskusi tribologija obrus kamnin instrumentizirano sledilo true false false Angleški jezik Slovenski jezik Neznano 2015-07-10 10:09:11 2015-07-10 10:09:11 2022-12-09 03:38:08 0000-00-00 00:00:00 2012 0 0 Str. 263-270 iss. 4 Vol. 58 Apr. 2012 0000-00-00 NiDoloceno NiDoloceno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 556:626/627 0039-2480 10.5545/sv-jme.2010.215 5721697 762116 2010_215_Solc_05_w.pdf 2010_215_Solc_05_w.pdf 1 5F564A6A8133FF29020027898DB17CFA 8fce2caf9ce044dab593ad34145a9d822c49cf45a0ca9d02def223edb1e49f96 05805932-76ec-11ed-9c94-00155dcfd717 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=164834 https://www.sv-jme.eu/article/application-of-an-instrumented-tracer-in-an-abrasion-mill-for-rock-abrasion-studies/ 0 d8e252c2-76eb-11ed-9c94-00155dcfd717 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=164833 Fakulteta za gradbeništvo in geodezijo Strojniški vestnik 0 0 0