Gearbox Load and Life Simulation Software

Award Information
Agency: Department of Defense
Branch: Navy
Contract: N68335-10-C-0558
Agency Tracking Number: N091-017-0548
Amount: $749,948.00
Phase: Phase II
Program: SBIR
Awards Year: 2010
Solicitation Year: 2009
Solicitation Topic Code: N091-017
Solicitation Number: 2009.1
Small Business Information
Sentient Corporation
850 Energy Drive, Suite 307, Idaho Falls, ID, -
DUNS: 089822014
HUBZone Owned: N
Woman Owned: Y
Socially and Economically Disadvantaged: N
Principal Investigator
 Nathan Bolander
 Chief Scientist
 (208) 522-8560
 nbolander@sentientscience.com
Business Contact
 Kris D''Antoni
Title: Contracts Administrator
Phone: (208) 522-8560
Email: kdantoni@sentientscience.com
Research Institution
N/A
Abstract
Gear tooth surface fatigue (pitting) is common precursor failure mode that leads to excessive gear vibration, liberation of debris particles that damage ancillary components (e.g. bearings), and serves as crack initiation sites that lead to eventual catastrophic tooth failure. Current gearbox life estimation techniques commonly underplay the significance of gear tooth surface fatigue due to the complexity of the phenomenon involved. The Phase I program successfully demonstrated the feasibility of utilizing advanced modeling techniques to predict the onset and propagation of surface fatigue in gearing, including a rigorous analysis of misalignment, mixed-elastohydrodynamic lubrication, and damage accumulation in the material. Phase II will build on this success by applying these models to a complete gearbox, including a comprehensive graphical user interface for model construction and analysis control. Extensive verification of the models will ensure accuracy of the results. The completed software will provide analysts with a tool to predict the current damage state in helicopter gearboxes and evaluate remaining useful life for anticipated mission profiles.

* information listed above is at the time of submission.

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