A Study on the Uncertainty of Estimation in Vibration Test for the Machine Parts
가공 기계부품 고유진동수 해석과 측정에 관한 연구

Jae-Deok Hwang, Chae-Sil Kim, Sung-Jin Cho
2014 Journal of the Korean Society of Manufacturing Process Engineers  
Resonance refers to the magnification of a structural response which occurs when a linear lightly damped system is driven with a sinusoidal input at its natural frequency. An exploratory vibration test (a natural frequency measurement test) is very important for the vibration testing of machine parts, as the value measured in an actual laboratory affects test results. For this reason, it is necessary to estimate the measurement uncertainty to verify the reliability of this type of test. In this
more » ... pe of test. In this study, measurement uncertainty is estimated based on three uncertainty factors. The uncertain factors are the measured points in the machine parts, the resolution of the vibration equipment, and uncertainty of the calibration certificate.
doi:10.14775/ksmpe.2014.13.1.016 fatcat:4iex7ghjtfdmrc5yakrtagsaom