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첨도가 피로 수명에 미치는 영향

원문정보

The Effect of Kurtosis on Fatigue Life

홍창섭, 오재윤

피인용수 : 2(자료제공 : 네이버학술정보)

초록

영어

This paper studies on the effect of kurtosis on fatigue life. A typical vibration test machine uses a normal distribution signal. However, the vibration signal generated in the actual operating environment is a non-normal distribution signal with kurtosis. In this paper, a signal which has the same power spectral density, but has different kurtosis is generated using the Zero Memory Non-Linear (ZMNL) method. The power spectral densities of these two signal will coincide within ±3dB. Fatigue damage spectrum(FDS) computed with a normal distribution signal and FDS computed with a non-normal distribution signal generated using the ZMNL method are compared. FDS computed using the normal distribution signal of kurtosis 3 will show a big difference over the 100Hz with FDS computed using the signal of kurtosis 6. This paper shows through such FDS comparison that a difference in fatigue life prediction may result in if a vibration profile which does not consider kurtosis occurring in the operating environment of a product is used in a vibration test.

목차

Abstract
 1. 서론
 2. 주파수 영역에서의 피로 수명평가
 3. 첨도가 피로 수명에 미치는 영향
 4. 결론
 References

저자정보

  • 홍창섭 C. S. Hong. Member, Chonbuk National University
  • 오재윤 C. Y. Oh. Samsung Electro-Mechanics Co., Ltd.

참고문헌

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