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Assessment of Elastic and Microfailure Properties of MEMS Materials Using Electrostatically Operated Test Device

정전기력 구동소자를 이용한 MEMS 소재의 탄성특성 및 미세파손특성 평가

  • Published : 2002.11.01

Abstract

To evaluate elastic and micro-failure properties of MEMS materials, the electro-statically operated test devices were designed and fabricated by micro machining technology. The test structures consist or comb drives for loading and suspending beams in testing. From the analysis of beam displacement based on elastic beam theory, elastic modulus and yield strength of Al film were measured. And, by introducing the micro notch and cyclic loading, the micro-failure was Induced and the micro-fracture toughness of Si film was evaluated. Moreover, the cycles to failure were estimated from the degradation of resonant frequency. Finally, the effects of notch on micro failure were discussed.

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References

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