Online Real-Time Tribology Failure Detection System

Award Information
Agency: National Aeronautics and Space Administration
Branch: N/A
Contract: NND08AA57C
Agency Tracking Number: 050141
Amount: $599,997.00
Phase: Phase II
Program: STTR
Awards Year: 2008
Solicitation Year: 2005
Solicitation Topic Code: T2.02
Solicitation Number: N/A
Small Business Information
1600 Providence Highway, Walpole, MA, 02081-2553
DUNS: 125933916
HUBZone Owned: N
Woman Owned: Y
Socially and Economically Disadvantaged: Y
Principal Investigator
 Bo Ling
 Principal Investigator
 (508) 660-0328
Business Contact
 Bo Ling
Title: President & CEO
Phone: (508) 660-0328
Research Institution
 Louisiana State University
 Not Available
 Department of Mechanical Engineering
Baton Rouge, LA, 70803
 (225) 578-9192
 Domestic nonprofit research organization
Under NASA Phase I funding, we have developed a system for the ball bearing fault detection and identification. Our system can effectively identify multiple fault modes related to the evolution of friction within the contact in the coated ball bearings. To detect bearing faulty modes, we have developed a new bispectrum and entropy analysis method to capture the faulty transient signals embedded in the measurements. To classify the fault modes, we further developed a set of stochastic models using hidden Markov model (HMM) and Gaussian mixtures. Test results using lab experiment data have shown that our system can identify coated ball bearing fault modes in near real-time. In Phase II, we will further develop and test our system developed in Phase I for spacecraft mechanical parts health monitoring and mitigating actions. A thorough understanding of the failure mechanisms of the moving parts will emerge by the end of the Phase II effort, as well as the methodology to prevent catastrophic failure while in orbit. Algorithms developed in Phase I/II will be implemented in C/C++. Effort will be focused on the accuracy, autonomous, speed and efficiency of the system. The Boeing Company has teamed with us for Phase II effort.

* Information listed above is at the time of submission. *

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