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 - Halápi, Dávid AU - Varga, László TI - Simulation testing of metal powders used in additive manufacturing technologies JF - DOKTORANDUSZ ALMANACH J2 - DOKTORANDUSZ ALMANACH VL - 2023 PY - 2023 IS - 1 SP - 151 EP - 161 PG - 11 SN - 2939-7294 UR - https://m2.mtmt.hu/api/publication/34498464 ID - 34498464 N1 - 34453228 másolata. LA - English DB - MTMT ER - TY - JOUR AU - Halápi, Dávid AU - Varga, László TI - Comparison of metal powders shape and grain structure JF - DOKTORANDUSZ ALMANACH J2 - DOKTORANDUSZ ALMANACH VL - 2023 PY - 2023 IS - 1 SP - 175 EP - 182 PG - 8 SN - 2939-7294 UR - https://m2.mtmt.hu/api/publication/34453362 ID - 34453362 LA - English DB - MTMT ER - TY - JOUR AU - Halápi, Dávid AU - Varga, László TI - Examination of the porosity of 3D metal printed samples of metal powders used in additive manufacturing technologies JF - DOKTORANDUSZ ALMANACH J2 - DOKTORANDUSZ ALMANACH VL - 2023 PY - 2023 IS - 1 SP - 162 EP - 173 PG - 12 SN - 2939-7294 UR - https://m2.mtmt.hu/api/publication/34453228 ID - 34453228 LA - English 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 - GEN AU - Hudák, Henrietta AU - Varga, László TI - Öntödei formázó- és maghomokkeverékek gázáteresztő képességének és szilárdsági tulajdonságának vizsgálata újszerű minősítő módszer alapján PY - 2023 UR - https://m2.mtmt.hu/api/publication/34256751 ID - 34256751 N1 - 2023. 10. 14. 27. MAGYAR ÖNTŐNAPOK (előadás) LA - Hungarian 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 - CHAP AU - Halápi, Dávid AU - Varga, László ED - Homolya, Márton ED - Mankovits, Tamás TI - ULTRASONIC POWDER ATOMISATION FOR ADDITIVE MANUFACTURING T2 - 8th International Scientific Conference on Advances in Mechanical Engineering (ISCAME 2022) PB - Department of Mechanical Engineering, Faculty of Engineering, University of Debrecen CY - Debrecen SN - 9789634904489 PY - 2022 SP - 40 EP - 41 PG - 2 UR - https://m2.mtmt.hu/api/publication/33575326 ID - 33575326 LA - English DB - MTMT ER - TY - JOUR AU - Halápi, Dávid AU - Varga, László TI - The effect of recycling for metal powder bed fusion additive manufacturing JF - DOKTORANDUSZ ALMANACH J2 - DOKTORANDUSZ ALMANACH VL - 1 PY - 2022 SP - 173 EP - 178 PG - 6 SN - 2939-7294 UR - https://m2.mtmt.hu/api/publication/33541114 ID - 33541114 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 -