= Gear Fault Detection Effectiveness as Applied to Tooth Surface Pitting Fatigue Damage by David G. Lewicki and others
{c}
{tag=Work by David G. Lewicki}
{tag=Work by Paula J. Dempsey}
{tag=Work by Gregory F. Heath}
{tag=Work by Perumal Shanthakumaran}
{title2=2009}
{title2=NASA/TM–2009-215667}
https://ntrs.nasa.gov/citations/20090039501
https://ntrs.nasa.gov/api/citations/20090039501/downloads/20090039501.pdf
Primary title page gives David G. Lewicki, Paula J. Dempsey, Gregory F. Heath and Perumal Shanthakumaran, October 2009. Printed pp. 1–3 describe the 24 gear sets, test facility, vibration acquisition and oil-debris instrumentation; pp. 4–5 relate inspection observations to detection performance.
https://ik.imagekit.io/agmamedia/gt/issues/1110x/lewicki.pdf[Gear Technology published version], November/December 2010, printed pp. 48–59. The article repeats the four original bylines. Author biographies on printed p. 59 document Paula J. Dempsey's NASA aerospace-research work, Gregory F. Heath's Boeing rotorcraft-drive role, and Perumal Shanthakumaran's Boeing condition-monitoring role as of that publication. Initial-only names are retained as printed.
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