ISSN: 1945-7553
CODEN: JTEVAB
Published Online: 28 May 2010
Page Count: 10

Fatigue Damage Severity Calculation for Vibration Tests

Lee, Yung-Li
Chrysler Group LLC, Auburn Hills, MI

Polehna, Dennis
Chrysler Group LLC, Auburn Hills, MI

Kang, Hong-Tae
Univ. of Michigan—Dearborn, Dearborn, MI

(Received 26 January 2010; accepted 3 May 2010)

Abstract

An analytical solution to calculate a fatigue damage spectrum for a linear single degree-of-freedom system is presented to assess fatigue damage severity for various vibration test specifications. This solution can be served as the fundamental to develop an accelerated vibration test specification based on the real measured customer usage data and the use of material. Fundamentals of vibration characteristics for sinusoidal and random vibrations are well described in this paper. The state-of-the-art frequency-based fatigue theories are also reviewed. Finally, this paper compares the calculation results for a product subject to the vibration loads defined in IEC-60068-2-6 and ISO 16750-3.

Keywords:
fatigue damage spectrum, sinusoidal vibration, random vibration, frequency-based fatigue, narrow band, wide band

Paper ID: JTE102994
DOI: 10.1520/JTE102994
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