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김효중(Hyo Jung Kim),정한얼(Han Eol Jeong),구동식(Dong Sik Gu),김학은(Hak Eun Kim),최병근(Byeong Keun Choi) 대한기계학회 2006 대한기계학회 춘추학술대회 Vol.2006 No.6
The noise and vibration of reciprocating hydrogen compressor is occurred by the pulsation caused by the mechanism. And the noise and vibration have a bed effect on machine and working condition. The compressor is analyzed to use the MSC/NASTRAN for studying characteristic of vibration. So, find and parallel each mode of crank case and crank & cylinder case through free vibration analysis. And find response of vibration about Crank case's pulsation through forced vibration analysis.
장용석(Yong Seok Jang),정재환(Jae Hwan Jeong),정한얼(Han Eol Jeong),최병근(Byeong Keun Choi) 대한기계학회 2007 대한기계학회 춘추학술대회 Vol.2007 No.5
The necessity of diagnosis of the rotating machinery which is widely used in the industry is increasing. Because vibration diagnosis can avoid sudden breakdown of machine and reduce the maintenance costs. In chemical factory, Air-compressor and refrigerator which can affect the performance and capacity of output is important machine. Therefore, in this paper, the vibration of reassembled air-compressor and refrigerator after explosion is measured for checking the machine condition. The result of diagnosis and solution is discussed in this paper.
구동식(Dong Sik Gu),김효중(Hyo Jung Kim),정한얼(Han Eol Jeong),김학은(Hak Eun Kim),최병근(Byeong Keun Choi) 대한기계학회 2006 대한기계학회 춘추학술대회 Vol.2006 No.6
A few intake stations have vibration problems caused by pumps, motors and pipes. The vibration transferred from pumps, motors and pipes excites building severely. Therefore, the crack is generated on building wall and people who work at intake station are damaged. In this paper, the vibration and noise have been measured and analyzed for pumps, motors, pipes and building at intake station. Also, the cause of vibration and noise is identified. Finally, the reference of vibration and noise is established using results of measurement.