Recent progress in hydrogen-fueled direct injection spark ignition engines: Review of technologies for power enhancement and NOₓ emission reduction

Seungjae Kim, Hyunmin Beak, Hyungmin Lee

The decarbonization of the maritime sector has intensified interest in hydrogen-fueled internal combustion engines as a viable alternative to conventional power...

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DOI: https://doi.org/10.5916/jamet.2026.50.3.180

Upset forging process design of aluminum bolts and forming load evaluation by slab method

Sung-Cheol Park, Kyung-Hun Lee

A process design method for multi-stage cold upset forging of aluminum alloy bolts, along with an analytical approach for predicting the forming load using the ...

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DOI: https://doi.org/10.5916/jamet.2026.50.3.197

Region-based stress assessment for evaluating the applicability of tetrahedral solid elements in lifting lug contact analysis

Dan bi Jang, Min Han, Jeong-Hwan Kim

Tetrahedral solid elements are widely adopted in practical finite element modeling due to their geometric flexibility and robustness in automatic mesh generatio...

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DOI: https://doi.org/10.5916/jamet.2026.50.3.205

Design and development of a high-speed large-format FDM system with independent four-Z-axis control

Inwoo Kim, Dam Lee, Junghyuk Ko

Large-format fused deposition modeling (FDM) systems enable fabrication of meter-scale parts but suffer from limited speed, poor bed-leveling accuracy, and redu...

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DOI: https://doi.org/10.5916/jamet.2026.50.3.213

Design, optimization and structural analysis of a marine propeller for a solar-powered boat

Paulo Silva, Alexandre M. Afonso

This study reports the design, hydrodynamic optimization, and structural assessment of a marine propeller for a solar-powered vessel. Using lifting-line model t...

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DOI: https://doi.org/10.5916/jamet.2026.50.3.225

A study on fault diagnosis technique for rotor sail tilting mechanism using simulation-based data and transfer learning

Sung-Dong Kim, Jeong-Hwan Kim, Hyung-Sik Nam

This study aims to develop a simulation-based fault diagnosis method for Rotor Sail systems to overcome the challenges of limited real-world failure data in the...

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DOI: https://doi.org/10.5916/jamet.2026.50.3.238

Deployment strategy of a LoRaWAN network for shipboard IoT

Yang-Ick Joo

Maritime operations are increasingly being restructured around data-centric management models, in which persistent sensing and systematic analysis of onboard in...

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DOI: https://doi.org/10.5916/jamet.2026.50.3.247