Prof. Dimitrios - Nikolaos Pagonis
Department of Naval Architecture, Faculty of Engineering, University of West Attica, 122 43 Athens, Greece
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Academic Career Length
24Years (2003-Present)
(Calculated once Scilit publication data is synced: current year − year of first publication + 1)
Representative Publications
View All Publications1 March 2014 in Energy Conversion and Management
Journal Article
GLGeorge A. Livanos
George A. Livanos
Gerasimos THEOTOKATOSDimitrios - Nikolaos PagonisJournal Article
APAggelos Pilatis
Aggelos PilatisDimitrios - Nikolaos PagonisMSMichael Serris
Michael SerrisSPSofia Peppa
Sofia Peppa
Grigoris KaltsasIn this work, over a thousand maritime casualty reports were reviewed in order to fully investigate and assess selected 213 marine accidents concerning the collision, grounding, and hull failure of ships, which occurred during the time period of 1990–2020, worldwide. Ship type and vessels’ main characteristics, as well as the cause of accidents, were categorized and analyzed statistically. The statistical software IBM SPSS© Statistics v.29 was employed for the investigation of a possible association between the above set criteria. Furthermore, the location and the extent of hull damage was extracted for all incidents, providing valuable insights into the resulting consequences for vessel integrity. These data are essential for estimating the accident’s impact on the viability of the ship, crew, and cargo. According to the main results obtained, significant correlations are deduced regarding the analyzed parameters. In collision accidents, these include the ship type, the location of the damage, visibility and age of the ship, the impact of the accident, and the type of casualty. In the case of grounding incidents, correlations emerge involving the type of ships, day/night period, the width of the resulting damage, the type of casualty, and the cause of accidents.
20 April 2004 in Journal of Micromechanics and Microengineering
Journal Article
Dimitrios - Nikolaos PagonisGKG Kaltsas
G Kaltsas
ANA G Nassiopoulou
A G Nassiopoulou
1 April 2006 in Microelectronic Engineering
Journal Article
Dimitrios - Nikolaos PagonisANAndroula G. Nassiopoulou
Androula G. Nassiopoulou
Journal Article
TKTheodoros Isaak Kouvatsos
Theodoros Isaak KouvatsosDimitrios - Nikolaos PagonisIIIsidoros Iakovidis
Isidoros IakovidisGrigoris KaltsasThis study focuses on the successful fabrication of a cost-effective strain sensor using exclusively additive manufacturing Fused Deposition Modeling (FDM) technology, enabling fast on-site production, which is particularly advantageous in maritime settings, reducing downtime, and supporting a circular economy approach by minimizing inventory needs and environmental footprint. The principle of operation of the developed device is based on the piezoresistive characteristics of a carbon nanotube (CNT)-enriched building material, from which the main sensing element consists. The prototype exhibited reliable piezoresistive properties, and a clear correlation was observed between the thermal treatment of the printed piezoresistor and the resulting gauge factor, linearity, and hysteresis. Its robustness, simple design, and single-step manufacturing process, together with its ability to be integrated into the readout circuitry through standard soldering, enhance its reliability and durability. The key advantages of the proposed device include its low cost, simple design, and rapid remote production.
Journal Article
CLCHRISTOS LIOSIS
CHRISTOS LIOSISAPAlexandros Papadatos
Alexandros PapadatosDimitrios - Nikolaos PagonisSPSofia Peppa
Sofia Peppa
Ioannis SARRISAlthough the Tesla valve is a well-known technology spanning almost 100 years, its wide range of potential applications in modern engineering problems has made it particularly attractive to researchers in the last few years. The major factor that characterizes the Tesla’s valve effectiveness is the diodicity (D), which is practically defined as the ratio of the pressure difference in reverse to forward flow . Under this framework, a geometry of multi-staged Tesla valves was selected to investigate the correlation between the Reynolds (Re) number and diodicity. Initial simulations were performed for , and multi-staged micro Tesla valves using the OpenFoam platform, with Reynolds numbers of 50–450. Here, the maximum diodicity values obtained were , and for double-, six- and ten-staged micro Tesla valves under , respectively. Further simulations were performed for and under the same initial conditions in order to investigate the proportionality between N and D.
About Me
Prof. D.N. Pagonis received his Master of Engineering degree in Electronic and Electrical engineering from the University of Loughborough, U.K., in 1999. He received his Master of Science degree and his Ph.D. in the area of Microelectronics from the University of Athens, in 2001 and 2004 respectively. During 2005-2007 he was holding a Postdoctoral position at the National Centre of Scientific Research “Demokritos”. He joined the University of West Attica in 2010, following a three-year academic break where he was a Flag state Surveyor for the Greek Ministry of Mercantile Shipping. He is currently a Professor at the Department of Naval Architecture. He has participated in numerous research projects while he has authored/co-authored one PCT patent and 66 papers in international journals and peer-reviewed conferences. He has served as a member of journal editorial boards and conference scientific committees and also as a guest editor and reviewer for various academic journals and conferences. His research interests include 3D/4D printing, measurement systems employing 3D/4D printing, measurement systems for marine engineering applications, screen-printing, microsystems modeling and simulation, sensors/actuators on flexible substrates, and silicon micromachining. He has also contributed to applied research for marine applications involving LNG propulsion systems.