Evaluation of MEMS-Based Wireless Accelerometer Sensors in Detecting Gear Tooth Faults in Helicopter Transmissions by David G. Lewicki and others 2026-11-05
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Title-page byline: David G.Lewicki, Nicholas A.Lambert and Robert S.Wagoner, April2015. Printed p.21, equations(1)–(2), explains rotating-sensor sidebands at1957±103Hz; Figure20, printed p.23, compares radial and tangential channels.
Printed pp. 1–5 identify the author affiliations, test objective and notched pinion; Figure 7, printed p. 7, and “MEMS Results”, printed p. 19, give the radial/tangential sensor layout and channel combinations. Printed pp. 24–25 compare reconstructed and measured rotation timing for synchronous averaging; Conclusions, printed p. 30, point 5, states the limited interval between detection and actual tooth fracture.
Author-organization-hosted version: first-page bylines are David G. Lewicki, Nick Lambert and Robert Wagoner. The formal NASA report uses Nicholas A. Lambert and Robert S. Wagoner. These parallel versions establish abbreviated byline variants without supplying fuller middle names.
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