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한국기계항공기술학회지(구 한국기계기술학회지) [Journal of the Korean Society of Mechanical and Aviation Technology]
<생산기술>
한국기계항공기술학회(구 한국기계기술학회) 한국기계항공기술학회지(구 한국기계기술학회지) 제28권 제3호 2026.06 pp.572-575
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4,000원
The chain conveyor system is a product for the environment and productivity, allowing users to work efficiently. The existing chain conveyor system is operated by a single drive motor, so all processes are driven at the same time, so if the working hours are different, they are not time-efficient. Due to the nature of the chain conveyor system, a lubricant is used to prevent noise and dust caused by chain driving, and even if only one section of the chain conveyor breaks down, the entire line must be stopped in order to repair it. This study was conducted with a focus on localizing the flexible drive system, securing the reliability of the drive wheel that operates smoothly even in fatigue situations, prototyping and performance evaluation of the flexible drive system.
이형제 함량에 따른 에폭시의 점도-온도 민감도 특성 분석
한국기계항공기술학회(구 한국기계기술학회) 한국기계항공기술학회지(구 한국기계기술학회지) 제28권 제3호 2026.06 pp.576-579
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4,000원
The viscosity-temperature behavior of epoxy resins directly affects mold filling, fiber impregnation, and process stability in composite manufacturing. In this study, five commercial epoxy resin systems were evaluated using viscosity-temperature data measured in the range of 16 to 50℃, and two statistical sensitivity indices, S_T and S_RA, were defined and compared. The S_T index was defined as the logarithmic viscosity change rate in the range of 20 to 40℃, while S_RA was defined as the relative viscosity change between 3 wt.% and 6 wt.% internal release agent conditions at the same temperature. The results showed that high-viscosity resin systems were more sensitive to temperature than low-viscosity systems, and the influence of release-agent content varied among resin systems, especially in the processing temperature range. These findings provide useful baseline data for resin selection, temperature setting, and internal release-agent optimization in composite molding processes.
1톤 LPG 자동변속기 트럭 기반 고소작업차용 PTO 시스템 개발
한국기계항공기술학회(구 한국기계기술학회) 한국기계항공기술학회지(구 한국기계기술학회지) 제28권 제3호 2026.06 pp.580-585
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4,000원
The domestic 1-ton truck market in Korea is rapidly shifting from diesel vehicles to LPG and electrified vehicles. However, hydraulic special-purpose vehicles, such as aerial work platforms, still require a reliable power take-off system to drive hydraulic equipment. In particular, conventional transmission-mounted PTO systems are difficult to apply to 1-ton LPG automatic-transmission trucks, despite the high market demand for automatic-transmission vehicles. In this study, a PTO system was developed for an aerial work platform based on a 1-ton LPG automatic-transmission truck. The developed system indirectly extracts engine power and transmits it to a hydraulic pump through a magnetic clutch. The hydraulic system was designed based on a flow rate of 20 L/min and a maximum pressure of 200 bar. The generated hydraulic power and required transmission torque were calculated using measured flow rate, pressure, and engine speed. The calculated pump input torque was confirmed to be within the allowable torque capacity of the 15 kgf·m magnetic clutch. The developed PTO-driven hydraulic system was applied to an actual aerial work platform, and the main working motions were confirmed to operate normally.
한국기계항공기술학회(구 한국기계기술학회) 한국기계항공기술학회지(구 한국기계기술학회지) 제28권 제3호 2026.06 pp.587-598
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4,300원
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