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건설중장비 제품개발 초기 단계에서의 라디에이터 진동 설계
강현석(Hyunseok Kang),김성환(Sunghwan Kim),강종민(Jongmin Kang) 한국소음진동공학회 2011 한국소음진동공학회 학술대회논문집 Vol.2011 No.10
The working conditions of construction equipments such as excavators, wheel loaders and haulers are very tough and severe in fact. To design main components of construction equipment under the severe environment, it’s important for engineers to consider design for vibration durability point of view at the early stage of product development process. Radiator as a cooling unit of construction equipment is one of critical components to apply design for vibration. We present a design for vibration process and methodology on the radiator system in construction equipment industries. From the natural frequency and the random vibration analysis based on field vibration test data, we could find current status of radiator layout design to develop and made best layout specification of radiator design to decide for product development process at the early stage.
펄스정전응력법(PEA)을 이용하여 측정한 고분자 절연재료 내에서의 공간전하분포 신호에 대한 보정 처리 연구
민우민(Woomin Min),강종민(Jongmin Kang),김형규(HyungGyu Kim),박준도(JunDo Park),황보승(Seung Hwangbo) 대한전기학회 2018 전기학회논문지 Vol.67 No.7
The signal of space charge distribution measured in polymer insulating materials by the PEA has some noises due to the system circuits and the ringing phenomena in the sensor of PVDF and so on forth. It’s magnitude mainly depends on the thickness of the insulation material, and it is also affected by the attenuation and dispersion when traveling in a dielectric material. In order to make it reliable, the correcting process for the signal is essential. In this study, we proposed the new deconvolution process on the measured signal of space charge distribution in the flat XLPE insulator, and developed a new signal processing algorithm. Using this, we could improve the reliability of the measured signal much and analyze the effects of space charge clearly in materials.