20.500.12556/RUL-153501 Advanced analysis of the properties of solid-wire electric contacts produced by ultrasonic welding and soldering The current article presents an advanced analysis of the properties of solid-wire electric contacts produced with ultrasonic welding and soldering. Soldering is generally used to join thin, solid copper wires to produce electrical contacts in small-volume production, as ultrasonic welding does not provide acceptable peel force and tensile strength due to the deformation and thinning of the wires. In this article, ultrasonic welding of thin, solid copper wires using a ring before and after a thermal shock test is discussed and compared with the standard soldering technique. The thermal shock test was carried out in the temperature range from −30 to 150 °C. Half of the samples, for both the joining techniques and the wires, were subjected to the thermal shock test; the other half were not. Investigations included electrical resistance tests, optical and SEM microscopy, XRD, microhardness measurements, peel tests, tensile tests, and fractographic analysis. The electrical resistance test, microscopy, microhardness measurements, and fracture examinations showed no differences between the thermal shock-exposed and the non-exposed samples with the same joining process. In mechanical tests, the ultrasonic joint demonstrated superior strength compared to the soldered joint. solid copper wires ultrasonic welding soldering thermal shock test joint strength electrical conductivity bakrene žice ultrazvočno varjenje spajkanje test termičnega šoka trdnost spoja električna prevodnost true false true Angleški jezik Slovenski jezik Članek v reviji 2024-01-10 14:05:54 2024-01-10 14:05:59 2025-04-01 12:22:24 0000-00-00 00:00:00 2024 0 0 15 str. iss. 2, [article no.] 334 Vol. 17 jan. 2024 0000-00-00 Zaloznikova Objavljeno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 621.791 1996-1944 10.3390/ma17020334 180397827 Logar...-Advanced_analysis_of_the_properties_of_solid-wire_electric_contacts_produced_by_ultrasonic_welding_and_soldering.pdf Logar...-Advanced_analysis_of_the_properties_of_solid-wire_electric_contacts_produced_by_ultrasonic_welding_and_soldering.pdf 1 66AF0C86CE687682164C329E76C607D0 e47417298cf6e7ae53eb881670289479cec04d417f15dd317abec38fb9496bc6 e16cc867-afb9-11ee-ba87-0050569b8976 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=179528 https://www.mdpi.com/1996-1944/17/2/334 1 011436db-afb9-11ee-ba87-0050569b8976 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=179527 Fakulteta za strojništvo 0 0 0