20.500.12556/DKUM-86963 Fatigue behaviour of brazed joints for heat exchangers The plate heat exchanger (PHE) is a component that provides heat to be transferred from hot water to domestic cold water without mixing them with high efficiency. Over the lifetime of the PHE, cyclic pressures act on the brazing points and the plates, and this may lead to fatigue failure. The fatigue behaviour of the PHE, designed using copper-brazed 316L stainless steel, was investigated in this study. First, the fatigue tests under the load ratio R = 0.1 were performed on the Vibrophore 100 testing machine to obtain the S-N curve of the analysed brazed joint. Based on the obtained experimental results, an appropriate material model of the analysed brazed joint has been created, which was validated with numerical calculation in the framework of a program code Ansys. A validated material model was then used for the subsequent numerical analysis of PHE. In order to carry out a numerical calculation using the finite element method (FEM), a three-dimensional model of the heat exchanger was created based on the previous scanning of PHE-geometry. Thereafter, the geometry was parameterised, which allowed us to perform parametric simulations (monitoring different responses depending on the input geometry). Numerical simulations were carried out in the framework of the Ansys 2023-R1 software, whereby the obtained results were analysed, and the responses were appropriately characterised according to previously determined load cases. brazed joint fatigue experimental testing computational analyses heat exchanger lotni spoj utrujanje eksperimentalno testiranje računalniške analize toplotni izmenjevalec true false true MDPI Angleški jezik Slovenski jezik https://www.mdpi.com/1996-1944/17/2/479 © 2024 by the authors Članek v reviji 2024-01-31 15:11:14 2024-01-31 15:11:15 2025-07-02 10:41:18 0000-00-00 00:00:00 2024 0 0 13 str. iss. 2, [article no.] 479 Vol. 17 Jan. 2024 0000-00-00 Zaloznikova Objavljeno NiDoloceno 2023-12-08 2024-01-17 2024-01-19 620.17:621.791.3 182982659 10.3390/ma17020479 1996-1944 materials-17-00479_(1).pdf materials-17-00479_(1).pdf 1 B52A13FEAF6B19906FA91ACBB5EBB9E0 2068cfff853c1f333e4b0d7bc7948f6c203e6cad4b3d6b0a8664b90f746519e8 a25a07e6-c042-11ee-a100-00155d000105 https://dk.um.si/Dokument.php?lang=slv&id=175841 https://www.mdpi.com/1996-1944/17/2/479 0 cf6459b2-c042-11ee-a100-00155d000105 https://dk.um.si/Dokument.php?lang=slv&id=175843 Fakulteta za strojništvo 0 0 0