The LAST Sensor: Elastomeric Large Strain Measurement Gage

This Phase I SBIR effort investigates a novel large strain sensor concept constructed using all elastomeric materials for measuring large strains on surface of elastomers. An experimental investigation in formulation of a resistive elastomer is proposed. Concurrently, a strain field model is developed to match and guide the material selection of the large strain sensor. A sensor model is developed to predict the sensor performance and its sensitivity to the operating environment. Using these results, a prototype LAST (LArge STrain) sensor is designed, batch-fabricated, and integrated including a portable PC based data acquisition system. Each sensor is tested and characterized developing its own response curve. The LAST sensor is planned to be field tested at the Navy labs in demonstrating the concept feasibility.