Dimitar P. Karaivanov had his M.Sc. degree in “Handling and Building Machines and Systems” from Technical University – Sofia, Bulgaria in 1983. He Served as Engineer-designer and Head of the Lifting Equipment Group at the Design Department of KEM “6th of September”, Sofia, Bulgaria (electrical forklifts plant). His pedagogic work started in 1985 in University of Chemical Technology and Metallurgy (UCTM) – Sofia, Bulgaria where he served to nowadays. In UCTM he had his Dr. (PhD) degree (in 2000) and Professor (Docent) rank (in 2002) in “Machinery and Machine Elements”. Since 2015 he serves in Faculty Fire Safety and Civil Protection of Academy of Ministry of Interior, Sofia, Bulgaria. Dimitar P. Karaivanov is lecturing “Machine elements”, “Mechanical engineering”, etc. in: University of Chemical Technology and Metallurgy – Sofia; Faculty Fire Safety and Civil Protection of Academy of Ministry of Interior – Sofia (since 2007); He also lectured “Engineering method for investigation of compound planetary gear trains” and “Problems of creating of processing machines and equipment” in: Kazakhstan National Agrarian University, Almaty, Kazakhstan (2011, 2014); Kazakhstan National Pedagogic University, Almaty, Kazakhstan (2011, 2012); Academician Y.A. Buketov Karaganda State University, Karaganda, Kazakhstan (2012); S. Seyfullin Kazakh Agrotechnical University (KATU), Astana, Kazakhstan (2012, 2013, 2015); He was Co-mentor of five graduated PhD students from Croatia (one in “Planetary Gear Trains”) and Kazakhstan (four in “Agricultural Machinery”).
Prof. Dr. Dimitar Petkov Karaivanov Research interests are Handling machines dynamic (starting and braking processes, mechanisms and elements loading, etc.); Gear trains investigation (meshing geometry, load capacity, efficiency); Theoretical and experimental analysis of multistage planetary gear trains (structural analysis, power flows, load sharing equalization, efficiency, etc.); Agricultural machinery (precise fertilizing machines, dynamic processes in equipment, fruit dying process, etc.).