TY - CHAP AU - Szirányi, Tamás AU - Kriston, András AU - Majdik, András AU - Tizedes, László ED - Faragó, István ED - Izsák, Ferenc ED - Simon L., Péter TI - Fusion Markov Random Field Image Segmentation for a Time Series of Remote Sensed Images T2 - Progress in Industrial Mathematics at ECMI 2018 PB - Springer Netherlands CY - Cham SN - 9783030275501 T3 - Mathematics in industry, ISSN 1612-3956 ; 30. PY - 2019 SP - 621 EP - 629 PG - 9 DO - 10.1007/978-3-030-27550-1_79 UR - https://m2.mtmt.hu/api/publication/30839962 ID - 30839962 LA - English DB - MTMT ER - TY - CONF AU - Manno-Kovács, Andrea AU - Kriston, András AU - Zlinkszky, A AU - Domokos, Gy AU - Szirányi, Tamás TI - Observation of local Wetland areas from Satellite Imaging. An European Space Agency project TS - An European Space Agency project T2 - Képfeldolgozók és Alakfelismerők Társaságának 12. Országos Konferenciája PB - Képfeldolgozók és Alakfelismerők Társasága C1 - Debrecen PY - 2019 SP - 1 EP - 10 PG - 10 UR - https://m2.mtmt.hu/api/publication/30762083 ID - 30762083 LA - English DB - MTMT ER - TY - CONF AU - Szirányi, Tamás AU - Kriston, András AU - Csilling, Tamás AU - Majdik, András AU - Tizedes, László TI - Fusion Markov Random Field Image Segmentation for a Time Series of Remote Sensed Images T2 - Képfeldolgozók és Alakfelismerők Társaságának 12. Országos Konferenciája PB - Képfeldolgozók és Alakfelismerők Társasága C1 - Debrecen PY - 2019 SP - 1 EP - 12 PG - 12 UR - https://m2.mtmt.hu/api/publication/30762081 ID - 30762081 LA - English DB - MTMT ER - TY - CHAP AU - Kriston, András AU - Czipczer, Vanda AU - Manno-Kovács, Andrea AU - Kovács, Levente Attila AU - Benedek, Csaba AU - Szirányi, Tamás ED - Háber, István Ervin ED - Bogdán, Csaba ED - Szőke, András TI - Segmentation of Multiple Organs in Computed Tomography and Magnetic Resonance Imaging Measurements T2 - Proceedings of 4th International Interdisciplinary 3D Conference PB - Pécsi Tudományegyetem CY - Pécs SN - 9789634292678 PY - 2018 SP - 51 EP - 56 PG - 6 UR - https://m2.mtmt.hu/api/publication/30385910 ID - 30385910 LA - English DB - MTMT ER - TY - JOUR AU - Isitman, Nihat A AU - Kriston, András AU - Fülöp, Tibor TI - Role of rubber stiffness and surface roughness in the tribological performance on ice JF - TRIBOLOGY TRANSACTIONS J2 - TRIBOL T VL - 61 PY - 2018 IS - 2 SP - 295 EP - 303 PG - 9 SN - 1040-2004 DO - 10.1080/10402004.2017.1319002 UR - https://m2.mtmt.hu/api/publication/3254987 ID - 3254987 AB - The aim of this work is to investigate the effect of slider surface roughness and stiffness on the friction between rubber compounds and ice surfaces in order to provide insight into rubber–ice friction generation mechanisms. For this purpose, rubber compounds were designed to have different levels of macroscopic roughness and cured stiffness by modifying the filler system and plasticizer loading. In order to accurately evaluate the effects of surface and bulk rubber property on ice friction, linear friction tests were performed on laboratory ice with varied frictional heat buildup by modifying the friction test protocol. The results showed that the friction force was in general increased through the ploughing effect of a rough rubber block sliding on smooth ice. The increase in friction by ploughing was more pronounced when the contacting rubber block had sufficiently low stiffness and when the accumulation of frictional heat on ice was sufficiently high. It was also evidenced that a sufficiently hard rubber with test conditions leading to low heat buildup on ice could nevertheless lead to an opposite influence of roughness on rubber–ice friction; that is, lower friction force with a slider with a higher roughness. LA - English DB - MTMT ER - TY - JOUR AU - Tuononen, Ari J AU - Kriston, András AU - Persson, Bo TI - Multiscale physics of rubber-ice friction JF - JOURNAL OF CHEMICAL PHYSICS J2 - J CHEM PHYS VL - 145 PY - 2016 IS - 11 SN - 0021-9606 DO - 10.1063/1.4962576 UR - https://m2.mtmt.hu/api/publication/3254984 ID - 3254984 AB - Ice friction plays an important role in many engineering applications, e.g., tires on icy roads, ice breaker ship motion, or winter sports equipment. Although numerous experiments have already been performed to understand the effect of various conditions on ice friction, to reveal the fundamental frictional mechanisms is still a challenging task. This study uses in situ white light interferometry to analyze ice surface topography during linear friction testing with a rubber slider. The method helps to provide an understanding of the link between changes in the surface topography and the friction coefficient through direct visualization and quantitative measurement of the morphologies of the ice surface at different length scales. Besides surface polishing and scratching, it was found that ice melts locally even after one sweep showing the refrozen droplets. A multi-scale rubber friction theory was also applied to study the contribution of viscoelasticity to the total friction coefficient, which showed a significant level with respect to the smoothness of the ice; furthermore, the theory also confirmed the possibility of local ice melting. LA - English DB - MTMT ER - TY - JOUR AU - Kriston, András AU - Fülöp, Tibor AU - Isitman, Nihat Ali AU - Kotecký, Ondřej AU - Tuononen, Ari J TI - A novel method for contact analysis of rubber and various surfaces using micro-computerized-tomography JF - POLYMER TESTING J2 - POLYM TEST VL - 53 PY - 2016 SP - 132 EP - 142 PG - 11 SN - 0142-9418 DO - 10.1016/j.polymertesting.2016.05.019 UR - https://m2.mtmt.hu/api/publication/3254983 ID - 3254983 N1 - # Besorolás ismeretlen AB - The experimental analysis of the contact state in a tribosystem is of great importance in the study of contact mechanics. In order to make a realistic analysis on the micro scale, it is desirable to keep the tribosystem unperturbed, i.e., without any surface treatment or incorporation of a third body to facilitate the analysis. This study presents the use of a novel technique, micro-computerized tomography (micro-CT), in the investigation of contact between rubber compounds and various counter-surfaces. The goal of this study was to further advance the use of micro-CT in contact mechanics. Specific image analysis techniques were developed in order to process micro-CT images of contact pairs formed by rubber compounds of different hardness levels against counter-surfaces with varying surface roughness and mechanical properties. The micro-CT method has been shown to allow the direct visualization and precise quantification of the real area of contact without altering the original characteristics of the contact pair. LA - English DB - MTMT ER - TY - JOUR AU - Kriston, András AU - Isitman, Nihat Ali AU - Fulop, Tibor AU - Tuononen, Ari J TI - Structural evolution and wear of ice surface during rubber-ice contact JF - TRIBOLOGY INTERNATIONAL J2 - TRIBOL INT VL - 93 PY - 2016 SP - 257 EP - 268 PG - 12 SN - 0301-679X DO - 10.1016/j.triboint.2015.09.020 UR - https://m2.mtmt.hu/api/publication/3254971 ID - 3254971 N1 - #hozzárendelt szerző ismeretlen AB - This study investigates different possible contact mechanisms of rubber–ice sliding friction using in-situ and ex-situ ice microscopy at test temperatures below melting point. Several frictional processes were identified based on the evolution of ice surface morphology. The nature of rubber–ice contact is significantly different for softer and stiffer rubber compounds. For softer compounds the ice microstructure evolves through frost rounding/removal, surface scratching by hard filler plowing, and shearing of quasi-liquid layer by capillary drag. Cold recrystallization and local melting/refreezing of ice was not found to occur owing to homogenous pressure distribution. For stiffer compounds, the pressure distribution is uneven and contact is more localized, resulting in enhanced local deformation features such as subgrain boundaries, visible etch pits and large- scale melting/refreezing. LA - English DB - MTMT ER -