NASA NTRS · 19700000686
Electronic strain-level counter
Abstract
Counter for aircraft counts and records number of times the strain at a point in a structural member exceeds each of four preset levels. Counter uses 28 volt dc power supply, metallic resistance strain gage bridge as sensor, integrated and solid state circuits for signal processing, and electromechanical counters for data storage and readout.
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Pitts, F. L., Spencer, J. L.. 1970-12-01. Electronic strain-level counter. https://ntrs.nasa.gov/citations/19700000686
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