TY - JOUR AU - Juhász, Erika AU - Fischer, Szabolcs TI - Investigation of the modified Ballast Breakage Index for laboratory test series using the Proctor compactor machine JF - ACTA POLYTECHNICA HUNGARICA J2 - ACTA POLYTECH HUNG PY - 2025 SN - 1785-8860 UR - https://m2.mtmt.hu/api/publication/34818876 ID - 34818876 LA - English DB - MTMT ER - TY - JOUR AU - Brautigam, András AU - Szalai, Szabolcs AU - Légmán, Nikoletta AU - Fischer, Szabolcs TI - Laboratory investigation on seams between rails and hardened fine-grained as well as Hadfield steel plates prepared by manual arc welding JF - ACTA POLYTECHNICA HUNGARICA J2 - ACTA POLYTECH HUNG VL - 22 PY - 2025 SN - 1785-8860 UR - https://m2.mtmt.hu/api/publication/34777287 ID - 34777287 LA - English DB - MTMT ER - TY - JOUR AU - Nabochenko, Olga AU - Sysyn, Mykola AU - Krumnow, Norman AU - Fischer, Szabolcs TI - Mechanism of cross-level settlements and void accumulation of wide and conventional sleepers in railway ballast JF - RAILWAY ENGINEERING SCIENCE J2 - RAILWAY ENG SCI PY - 2024 PG - 23 SN - 2662-4745 DO - 10.1007/s40534-024-00329-5 UR - https://m2.mtmt.hu/api/publication/34821928 ID - 34821928 AB - The cross-level and twist irregularities are the most dangerous irregularity types that could cause wheel unloading with the risk of derailments and additional maintenance expenses. However, the mechanism of the irregularities initiation and development is unclear. The motivation of the present study was the previous experimental studies on the application of wide sleepers in the ballasted track. The long-term track geometry measurements with wide sleepers show an enormous reduction of the vertical longitudinal irregularities compared to the conventional track. However, wide sleepers had higher twist and cross-section level irregularities. The present paper aims to explain the phenomenon by discrete element method (DEM) modeling the development process of sleeper inhomogeneous support at cross-level depending on the sleeper form. The DEM simulations show that the maximal settlement intensity is up to 3.5 times lower for a wide sleeper in comparison with the conventional one. Nevertheless, the cross-level differential settlements are almost the same for both sleepers. The particle loading distribution after all loading cycles is concentrated on the smaller area, up to the half sleeper length, with fully unloaded zones under sleeper ends. Ballast flow limitation under the central part of the sleeper could improve the resilience of wide sleepers to the development of cross-level irregularities. The mechanism of initiation of the cross-level irregularity is proposed, which assumes the loss of sleeper support under sleeper ends. The further growth of inhomogeneous settlements along the sleeper is assumed as a result of the interaction of two processes: ballast flow due to dynamic impact during void closing and on the other side high pressure due to the concentration of the pressure under the middle part of the sleeper. The DEM simulation results support the assumption of the mechanism and agree with the experimental studies. LA - English DB - MTMT ER - TY - JOUR AU - Bozsaky, Dávid AU - Kőrössi, Éva TI - A plexi építőipari felhasználása - I. JF - MAGYAR ÉPÍTÉSTECHNIKA J2 - MAGYAR ÉPÍTÉSTECHNIKA VL - 62 PY - 2024 IS - 3-4 SP - 8 EP - 11 PG - 4 SN - 1216-6022 UR - https://m2.mtmt.hu/api/publication/34812853 ID - 34812853 LA - Hungarian DB - MTMT ER - TY - JOUR AU - Macher, Gergely Zoltán AU - Németh, Péter AU - Legény-Tóth, Adrienn TI - A gépjárműből származó akkumulátorok hulladékkeletkezési- és kezelési helyzetképének tendenciái az Európai Unióban JF - LÉPÉSEK: A FENNTARTHATÓSÁG FELÉ J2 - LÉPÉSEK VL - 29 PY - 2024 IS - 1 SP - 7 EP - 9 PG - 3 SN - 1786-9536 UR - https://m2.mtmt.hu/api/publication/34805032 ID - 34805032 LA - Hungarian DB - MTMT ER - TY - JOUR AU - Xu, Datao AU - Zhou, Huiyu AU - Quan, Wenjing AU - Ma, Xin AU - Chon, Teo-Ee AU - Fernandez, Justin AU - Fekete, Gusztáv AU - Kovács, András AU - Baker, Julien S. AU - Gu, Yaodong TI - New insights optimize landing strategies to reduce lower limb injury risk JF - Cyborg and Bionic Systems J2 - Cyborg and Bionic Systems VL - & PY - 2024 IS - & SP - 1 SN - 2692-7632 DO - 10.34133/cbsystems.0126 UR - https://m2.mtmt.hu/api/publication/34804546 ID - 34804546 LA - English DB - MTMT ER - TY - GEN AU - Kézai, Petra Kinga TI - Miért járnak négykeréken a gyerekek iskolába, ha van más megoldás is? PY - 2024 UR - https://m2.mtmt.hu/api/publication/34804394 ID - 34804394 N1 - Affil. 1. KRTK, 2. SZE LA - Hungarian DB - MTMT ER - TY - JOUR AU - Hammami, Amira AU - Borsos, Attila TI - Safety of cyclists interacting with autonomous vehicles: A combined microscopic simulation and SSAM analysis JF - TRAVEL BEHAVIOUR AND SOCIETY J2 - TRAVEL BEHAV SOC VL - 36 PY - 2024 SP - 100805 SN - 2214-367X DO - 10.1016/j.tbs.2024.100805 UR - https://m2.mtmt.hu/api/publication/34802381 ID - 34802381 LA - English DB - MTMT ER - TY - JOUR AU - Sütő, Csaba András TI - Keresztút, kereszteződés (Tőzsér, Goethe, J. A.) JF - ERUDITIO - EDUCATIO J2 - ERUDITIO - EDUCATIO VL - 2024/1 (19. vol.) PY - 2024 IS - 1. SP - 135 EP - 149 PG - 15 SN - 1336-8893 UR - https://m2.mtmt.hu/api/publication/34802146 ID - 34802146 LA - Hungarian DB - MTMT ER - TY - GEN AU - Dénes, Nóra TI - Párhuzamok - A két Reismann. Reismann Marian és János életműkiállítása TS - Reismann Marian és János életműkiállítása PY - 2024 UR - https://m2.mtmt.hu/api/publication/34801768 ID - 34801768 N1 - nemzetközi párhuzamok szakértője LA - Hungarian DB - MTMT ER -