20.500.12556/DKUM-99106 Lepljenje hladilne pločevine na tiskano vezje s tekočim lepilom Bonding a heatsink to a printed circuit board with liquid adhesive Magistrsko delo proučuje proizvodnjo lepljenega spoja med tiskanim vezjem in aluminijasto hladilno pločevino na tehničnem področju avtomobilskih LED-luči. Tekoča lepila so preizkušena kot alternativa dvostranskemu lepilnemu traku, ki ga v obstoječi proizvodnji uporablja podjetje Odelo. Lepljen spoj mora hkrati zagotavljati toplotno prevodnost, električno izolativnost, trajno elastičnost pri diferencialnem raztezanju in odpornost na vibracije. V teoretičnem delu je pregledano stanje tehnike na področju razpršitve toplote LED-svetil in oblikovanja lepljenih spojev. V kreativnem delu je ustvarjen postopek za razporeditev tekočega lepila na poljubne geometrije ravninskih lepljenih spojev, ki temelji na matematični optimizaciji. Na podlagi rezultatov optimizacije so izvedene šablone za nanos tekočega lepila. Ustvarjen postopek je tudi predmet patentne prijave. V empiričnem delu so s sitotiskom in šablonskim tiskom izdelani prototipni lepljeni spoji, ki so v eksperimentalni evalvaciji izpostavljeni toplotnim, vibracijskim in klimatskim obremenitvam. Izvedena je tudi finančna analiza preprostega polavtomatskega proizvodnega procesa, v kateri so ocenjeni obratovalni stroški in vrednost investicije, izračunani so standardni finančni kazalniki in njihova občutljivost na predpostavke. Magistrsko delo obravnava tehnološke in ekonomske pogoje, pod katerimi bi bilo predlagan postopek smiselno vključiti v proizvodni proces podjetja Odelo, vključno s preostalimi odprtimi vprašanji. The master's thesis examines the production of an adhesive joint between a printed circuit board and an aluminum heat sink in the technical field of automotive LED lights. Liquid adhesives are tested as an alternative to double-sided adhesive tape, which is used in the existing production by the company Odelo. The bonded joint must simultaneously provide thermal conductivity, electrical insulation, permanent elasticity under differential expansion and vibration resistance. The theoretical part reviews the state of the art in the field of LED heat dissipation and the design of adhesive joints. In the creative part, a procedure for distributing liquid adhesive to arbitrary geometries of planar bonded joints, based on mathematical optimization, is defined. Based on the optimization results, stencils for applying liquid adhesive are made. The procedure is also the subject of a patent application. In the empirical part, prototype bonded joints are produced using screen printing and stencil printing, which are later exposed to thermal, vibration and climatic loads in an experimental evaluation. A financial analysis of a simple semi-automatic production process is performed, where the operating costs and investment value are estimated, standard financial indicators and their sensitivity to assumptions are calculated. The master's thesis discusses the technological and economic conditions under which the proposed procedure would make sense to implement in the production process of the company Odelo, including the remaining open questions. avtomobilske luči zanesljivost LED-diod obvladovanje toplote hladilna pločevina oblikovanje lepljenih spojev toplotno prevodno lepilo optimizacija razporeditve kazenska funkcija računska geometrija spust po gradientu sitotisk šablonski tisk obdelava z atmosfersko plazmo klimatsko testiranje ocenjevanje investicije finančni kazalniki neto sedanja vrednost analiza občutljivosti automotive lights LED reliability thermal management heat sink adhesive joint design thermally conductive adhesive layout optimization penalty function computational geometry gradient descent screen printing stencil printing atmospheric plasma treatment climate testing investment assessment financial indicators net present value sensitivity analysis true true false Slovenski jezik Angleški jezik Magistrsko delo/naloga 2026-07-31 13:13:37 2026-09-04 11:13:16 2026-09-08 07:22:28 0000-00-00 00:00:00 2026 0 Maribor 0 0000-00-00 NiDoloceno NiDoloceno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 MAG_Ljevar_Vengust_2026.pdf MAG_Ljevar_Vengust_2026.pdf 1 30423668DED655E4692D5B73E0283680 01baae32636c695c34d3ce3b11dcd47fd7b31384b8b281542f835369213002c0 521a7c83-a83f-11f1-b9ca-00155d0001be https://dk.um.si/Dokument.php?lang=slv&id=211554 Fakulteta za strojništvo 0 0 0