TY - JOUR AU - Kovács, Sándor Endre AU - Varga, László TI - Additív technológiával előállított termékekben kialakuló maradó feszültségek vizsgálata JF - BÁNYÁSZATI ÉS KOHÁSZATI LAPOK (2023-) J2 - BKL VL - 156 PY - 2023 IS - 2 SP - 10 EP - 15 PG - 6 SN - 2498-9322 UR - https://m2.mtmt.hu/api/publication/34514260 ID - 34514260 LA - Hungarian DB - MTMT ER - TY - JOUR AU - Kovács, Sándor Endre AU - Varga, László TI - Additive manufacturing mistakes: an overview of possible errors in Laser Power Bed Fusion processes JF - Doktorandusz Almanach J2 - Doktorandusz Almanach VL - 2023 PY - 2023 IS - 1 SP - 184 EP - 188 PG - 5 SN - 2939-7294 UR - https://m2.mtmt.hu/api/publication/34452612 ID - 34452612 LA - English DB - MTMT ER - TY - JOUR AU - Kovács, Sándor Endre AU - Mikó, Tamás AU - Troiani, Enrico AU - Markatos, Dionysios AU - Pethő, Dániel AU - Gergely, Gréta Katalin AU - Varga, László AU - Gácsi, Zoltán TI - Additive Manufacturing of 17-4PH Alloy: Tailoring the Printing Orientation for Enhanced Aerospace Application Performance JF - AEROSPACE J2 - AEROSPACE-BASEL VL - 10 PY - 2023 IS - 7 PG - 13 SN - 2226-4310 DO - 10.3390/aerospace10070619 UR - https://m2.mtmt.hu/api/publication/34107259 ID - 34107259 AB - Additive manufacturing (AM) is one of the fastest-growing markets of our time. During its journey in the past 30 years, its key to success has been that it can easily produce extremely complex shapes and is not limited by tooling problems when a change in geometry is desired. This flexibility leads to possible solutions for creating lightweight structural elements while keeping the mechanical properties at a stable reserve factor value. In the aerospace industry, several kinds of structural elements for fuselage and wing parts are made from different kinds of steel alloys, such as 17-4PH stainless steel, which are usually milled from a block material made using conventional processing (CP) methods. However, these approaches are limited when a relatively small element must withstand greater forces that can occur during flight. AM can bridge this problem with a new perspective, mainly using thin walls and complex shapes while maintaining the ideal sizes. The downside of the elements made using AM is that the quality of the final product is highly dependent on the build/printing orientation, an issue extensively studied and addressed by researchers in the field. During flight, some components may experience forces that predominantly act in a single direction. With this in mind, we created samples with the desired orientation to maximize material properties in a specific direction. The goal of this study was to demonstrate that an additively manufactured part, produced using laser powder bed fusion (LPBF), with a desired build orientation has exceptional properties compared to parts produced via conventional methods. To assess the impact of the build orientation on the LPBF parts’ properties, one-dimensional tensile and dynamic fracture toughness tests were deployed. LA - English DB - MTMT ER - TY - JOUR AU - Kovács, Sándor Endre AU - Varga, László TI - Additive manufacturing of 3D printed tensile test specimens JF - Doktorandusz Almanach J2 - Doktorandusz Almanach VL - 1 PY - 2022 SP - 190 EP - 195 PG - 6 SN - 2939-7294 UR - https://m2.mtmt.hu/api/publication/33367233 ID - 33367233 LA - English DB - MTMT ER - TY - CHAP AU - Kovács, Sándor Endre AU - Varga, László ED - Kajos, Luca Fanni ED - Bali, Cintia ED - Preisz, Zsolt ED - Polgár, Petra Ibolya ED - Glázer-Kniesz, Adrienn ED - Tislér, Ádám ED - Szabó, Rebeka TI - Residual stress analysis of 3D printed metal parts T2 - 10th Jubilee Interdisciplinary Doctoral Conference : Book of Abstracts = 10. Jubileumi Interdiszciplináris Doktorandusz Konferencia : Absztraktkötet PB - Pécsi Tudományegyetem Doktorandusz Önkormányzat CY - Pécs SN - 9789634298205 PY - 2021 SP - 103 UR - https://m2.mtmt.hu/api/publication/32836851 ID - 32836851 LA - English DB - MTMT ER - TY - GEN AU - Kovács, Sándor Endre AU - Varga, László TI - 3D nyomtatott acél próbatestek maradó feszültség vizsgálata PY - 2021 UR - https://m2.mtmt.hu/api/publication/32467648 ID - 32467648 N1 - 26. Magyar Öntőnapok 2021-10-15-17 LA - Hungarian DB - MTMT ER - TY - GEN AU - Halápi, Dávid AU - Kovács, Sándor Endre AU - Varga, László TI - Metal powder production by ultrasonic atomization PY - 2020 UR - https://m2.mtmt.hu/api/publication/32033269 ID - 32033269 LA - English DB - MTMT ER - TY - CHAP AU - Kovács, Sándor Endre AU - Varga, László ED - Csiszár, Beáta ED - Hankó, Csilla ED - Kajos, Luca Fanni ED - Kovács, Olivér Béla ED - Mező, Emerencia ED - Szabó, Rebeka ED - Guth, Kitti TI - Residual stress build-up during 3D metal printing T2 - IX. INTERDISZCIPLINÁRIS DOKTORANDUSZ KONFERENCIA 2020 ABSZTRAKTKÖTET PB - Pécsi Tudományegyetem Doktorandusz Önkormányzat CY - Pécs SN - 9789634295822 PY - 2020 SP - 369 UR - https://m2.mtmt.hu/api/publication/31894539 ID - 31894539 LA - English DB - MTMT ER - TY - JOUR AU - Kovács, Sándor Endre AU - Szentes, Zsolt AU - Varga, László TI - 3D fémnyomtatással előállított, nagy hővezető képességű nyomásos öntészeti szerszámanyag tulajdonságainak vizsgálata JF - BÁNYÁSZATI ÉS KOHÁSZATI LAPOK-KOHÁSZAT J2 - BKL KOHÁSZAT VL - 153 PY - 2020 IS - 1 SP - 16 EP - 21 PG - 6 SN - 0005-5670 UR - https://m2.mtmt.hu/api/publication/31817860 ID - 31817860 LA - Hungarian DB - MTMT ER - TY - JOUR AU - Kovács, Sándor Endre AU - Szentes, Zsolt AU - Varga, László TI - Analysis of a Special, 3D Metal Printed HPDC Tool Material JF - INTERNATIONAL JOURNAL OF ENGINEERING AND MANAGEMENT SCIENCES / MŰSZAKI ÉS MENEDZSMENT TUDOMÁNYI KÖZLEMÉNYEK J2 - IJEMS MMTK VL - 5 PY - 2020 IS - 2 SP - 251 EP - 265 PG - 15 SN - 2498-700X UR - https://m2.mtmt.hu/api/publication/31393990 ID - 31393990 LA - English DB - MTMT ER -