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Luna Innovations Inc.'s (Roanoke, Va.) new ODiSI (Optical Distributed Sensor Interrogator) instrument is designed to deliver an unprecedented amount of data, using optical fiber as a continuous sensor. The system is said to provide insight into the performance, tolerances and failure mechanisms of structures. It is intended for applications where high-density strain or temperature measurements are required for structural or mechanical testing, including automotive, energy and aerospace, and it can be used for design and model verification, design improvement, structural health monitoring and performance optimization. Strain data are gathered over the entire surface-under-test and the user can redefine sensing points in postprocessing.