Prognostic Techniques for Mechanical Failure Prediction

Award Information
Agency:
Department of Defense
Branch
Navy
Amount:
$69,996.00
Award Year:
1995
Program:
SBIR
Phase:
Phase I
Contract:
n/a
Agency Tracking Number:
29007
Solicitation Year:
n/a
Solicitation Topic Code:
n/a
Solicitation Number:
n/a
Small Business Information
Barron Associates, Inc.
3046a Berkmar Dr., Charlottesville, VA, 22901
Hubzone Owned:
N
Minority Owned:
N
Woman Owned:
N
Duns:
n/a
Principal Investigator:
B. Eugene Parker, Jr., Ph
(804) 973-1215
Business Contact:
() -
Research Institution:
n/a
Abstract
State-of-the-art real-time diagnostic systems generally consist of two integrated components: fault detection and fault classification (isolation) systems. Although such systems may be able to recognize failure precursors, they have no mechanism for exploiting diagnostic information for prognostic purposes, i.e., for predicting the time to machinery failure. Prognostic information is critical as it provides a quantitative measure on which to base subsequent actions. It is the essential improvement needed in future condition-based maintenance systems and the one for which demand is greatest in both the military and commercial communities. The approach taken herein is based on the development of analytic parametric machinery component models. Analytic models are reconciled with sensor-based information by using adaptation to "parameterize" faults; such models thereby characterize the dynamic state of the machinery components modeled. The process of going from vibration signatures to analytic model parameterization is inherently an inverse problem, and one that neural networks are well suited to solve in real time. Once the analytic model parameters are identified, they may be used to initialize critical failure mechanics (e.g., crack growth) models, which can be used to predict remaining useful life under any user- specified loading condition.

* information listed above is at the time of submission.

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