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자동차부품(시트, 도어) 6축 진동 재현을 위한 가진 프로파일 생성 기법
이봉현(Lee, Bong-hyun),김기훈(Kim, Gi-Hoon),김찬중(Kim, Chan-jung) 한국소음진동공학회 2005 한국소음진동공학회 논문집 Vol.15 No.9
Vibration test using the MAST(multi axial simulation table) provide a more reliable testing environment than any conventional one. The multi axial simulation could be possible with a advanced control algorithm and hardware supports so that most of the operation is automatically conducted by MAST system itself except the input information that is synthesized by the measured response signals. That means the reliability of the vibration test is highly depended on the quality of the input profile. In this paper, the optimal algorithm based on the energy method is introduced to construct a best combination of candidated input PSD data could be constructed. Since the optimal algorithm renders time information, the nitration fatigue test is completely possible for any measured signals one wants. The proposed method is explained with representing acquired road signals from the candidate input PSD obtained from a proving ground.
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국내도로 주행 시험을 통한 6축 진동시험 방법에 관한 연구
김찬중(Kim, Chan-Jung),배철용(Bae, Chul-Yong),이봉현(Lee, Bang-Hyun),권성진(Kwon, Seong-Jin),나병철(Na, Byung-Chul) 한국소음진동공학회 2006 한국소음진동공학회 논문집 Vol.16 No.7
Vibration test on MAST(multi axial simulation table) system has several advantage over one-axial vibration test that could simulate 6-DOF, 3-axial translation and 3-axial moment, at the same time. Since field vibration motion can be fully represented with 6-DOF, multi-axial vibration test on vehicle component is widely conducted in technical leading companies to make sure its fatigue performance in vibration environment. On the way to fulfill the process, editing technique of obtained field data is key issue to success a reliable vibration testing with MAST system. Since the original signals are not only too large to fulfill it directly, but all of the measured data is not guarantee its convergency on generating its driving files, editing technique of the original signals are highly required to make some events that should meet the equal fatigue damage on the target component In this paper, key technique on editing a field data feasible for MAST system is described based on energy method in vibration fatigue. To explain its technique explicitly, author first introduced a process on field data acquisition of two vehicle component and then, representing events are produced to keep up with the editing strategy about a energy method. In the final chapter, a time information regarding a vibration test on MAST system is derived from the energy data which is critical information to perform a vibration test.
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