A digitizer-based methodology for converting P–θ diagram images into numerical pressure data for an internal combustion engine

Min-kook Jang, Jae-Ung Lee, Ji-Woong Lee

With the increasing adoption of electronically controlled marine engines, digital indicators have been widely used to monitor engine performance. However, becau...

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DOI: https://doi.org/10.5916/jamet.2026.50.4.250

Flow characteristics and predictive correlations within adiabatic capillaries for R290 refrigeration systems

Soo-Jeong Ha

This study aimed to theoretically identify and analyze the factors influencing the flow characteristics within adiabatic capillaries using R290 refrigerant in a...

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DOI: https://doi.org/10.5916/jamet.2026.50.4.259

Numerical analysis of combustion chamber temperature characteristics in a combined IGG-GCU system for 174K-class LNG carriers under MDO-NG mixed combustion conditions

Do Hu Lee, Jinwon Jung, Bo Rim Ryu

This study numerically investigates combustion characteristics and internal temperature distribution in an integrated inert gas generator–gas combustion unit sy...

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DOI: https://doi.org/10.5916/jamet.2026.50.4.268

Process design of net shape cold forging for HEV pinion gears

Donghwan Kim

Under the global imperative of carbon neutrality, the automotive industry is undergoing a rapid paradigm shift from internal combustion engines to electric and ...

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DOI: https://doi.org/10.5916/jamet.2026.50.4.279

Effect of counter-electrode-area-to-working-electrode area on hydrogen uptake and mechanical behavior under electrochemical charging

Su-been Im, Hee-Tae Kim, Jeong-Hyeon Kim, Jae-Myung Lee†

Electrochemical hydrogen charging is widely used to evaluate hydrogen embrittlement in metallic materials. However, ISO 16573 mainly specifies current density, ...

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DOI: https://doi.org/10.5916/jamet.2026.50.4.286

Effect of pressure on ammonia conversion in urea-water solution spray under high-pressure conditions

Chang-Chang Li, Suk-Ho Jung, Jeongmin Cheon

This study numerically investigated the effect of pressure on urea–water solution (UWS) evaporation, decomposition, and ammonia (NH) conversion efficiency in di...

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DOI: https://doi.org/10.5916/jamet.2026.50.4.294

Optimization of a fuzzy self-tuning PID control system for a marine low-flashpoint fuel supply system

Chihyung Park, Yujin Cheon, Sangmin Ji, Kyungyup Kim, Jinkwang Lee

This study proposes and evaluates a fuzzy-logic-based self-tuning proportional–integral–derivative (PID) control system to stabilize the supply pressure of a ma...

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DOI: https://doi.org/10.5916/jamet.2026.50.4.307

Design and development of a CNC-based automated multi-pipetting workstation incorporating mechanical syringe calibration and vision-based position correction

Minjeong Kim, Jiyoung Heo, Junghyuk Ko

Emerging infectious diseases have highlighted the need for affordable laboratory automation to support high-throughput diagnostics. This study presents an enhan...

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DOI: https://doi.org/10.5916/jamet.2026.50.4.319

Design of a printed dipole array for radar and satellite communication

Seungbae Ahn, Doyoung Jang, Sungjun Yoo

This paper proposes a compact, printed Log-Periodic Dipole Array (LPDA) to address the demand for high-performance wideband antennas in Ku-band Low Earth Orbit ...

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DOI: https://doi.org/10.5916/jamet.2026.50.4.334

Electromagnetic analysis of an axial-flux permanent magnet motor for torque density enhancement in electric propulsion systems

Wooyoung Choi, Minsoo Park, Byunghun Son, Wooseok Han, Bokyeong Chu, Young Jin Hwang

Axial-flux permanent magnet (AFPM) motors have gained significant attention in industries such as electric vehicles and marine applications due to their compact...

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DOI: https://doi.org/10.5916/jamet.2026.50.4.338

Acoustic emission-based predictive structural health monitoring for ammonia-fuelled ships: A review of technical foundations and evidence-gated pathways under IMO MSC.1/Circ.1687

Youngcheon Jang, Hyewon Kim

Ammonia is emerging as a leading zero-carbon marine fuel for decarbonising international shipping, with the world's first commercial ammonia dual-fuel mid-size ...

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DOI: https://doi.org/10.5916/jamet.2026.50.4.346