Abstract

In this paper the creep behaviour of a combinatory quartz resonant force sensor is discussed and a method for decreasing this behaviour is analysed. A viscoelastic model of the sensor which considers the viscoelastic characteristics of the adhesive used to glue the sensing element and other components is introduced to analyse the creep behaviour of the sensor. The result indicates that the features of the adhesive can bring about remarkable effects on the creep behaviour of the sensor. Among the feature parameters for the applied adhesive the glass transition temperature is the most important one. The adhesive must have a glass transition temperature much higher than its working temperature so as to reduce the creep error of the sensors. These conclusions result in the design and development of a new adhesive, which can be used over a wide temperature range.

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