Wireless strain-measurement systems for aircraft test applications

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Wireless strain-measurement systems represent a potentially cost-effective alternative to hard wiring for aircraft structural testing, particularly in hard to access, remote locations.

An independent ground test evaluation was performed by Lockheed Martin Aerospace (Marietta, Georgia) on a fighter aircraft using wireless strain systems (MicroStrain, Inc. Williston, Vermont) vs. traditional hard-wired strain gauges.

The objectives were: to determine wireless system accuracy by direct comparison to a known hard-wired system; to evaluate the environmental effects on the wireless system; and to focus future development. The results indicated strong potential for wireless sensors for reduced cost testing and structural health monitoring (SHM).