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International Hydrogen Conference (IHC 2016): Materials Performance in Hydrogen Environments
B. P. Somerday
B. P. Somerday
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P. Sofronis
P. Sofronis
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ASME Press
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An optical MEMS sensor device was developed to measure the relative slip range during fretting fatigue in hydrogen. The relative slip range is an important parameter to understand the mechanism of fretting fatigue failure, but there are measurement difficulties in a hydrogen environment. The MEMS sensor we developed showed a good reproducibility, accuracy and stability in hydrogen. For further improvement of the measurement, a calibration of the elastic deformation was done by both experiments and calculations. By applying this MEMS sensor, it was found that the relative slip range in hydrogen was significantly lower than that in air. This result was consistent with the experimental fact that adhesion between contacting surfaces occurred during fretting fatigue in hydrogen.

MEMS Optical Micro-Encoder
Measurement Method
Correction of the Error Due to Elastic Deformation
Measurement of Relative Slip Range During Fretting Fatigue in Hydrogen
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