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Rausch J.,LOEWE Zentrum AdRIA | Rausch J.,TU Darmstadt | Hatzfeld C.,LOEWE Zentrum AdRIA | Hatzfeld C.,TU Darmstadt | And 8 more authors.
Smart Materials and Structures | Year: 2012

This paper presents an experimental evaluation of three different strain measuring principles. Mounted on a steel beam resembling a car engine mount, metal foil strain gauges, piezoresistive silicon strain gauges and piezoelectric patches are investigated to measure structure-borne forces to control an active mounting structure. FEAsimulation determines strains to be measured in the range of 10 8 up to 10 5m×m 1. These low strains cannot be measured with conventional metal foil strain gauges, as shown in the experiment conducted. Both piezoresistive and piezoelectric gauges show good results compared to a conventional piezoelectric force sensor. Depending on bandwidth, overload capacity and primary electronic costs, these principles seem to be worth considering in an adaptronic system design. These parameters are described in detail for the principles investigated. © 2012 IOP Publishing Ltd. Source

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